Autoionization of atoms by partially stripped ion impact

S. OTRANTO, R. E. OLSON

Rosario, Argentina

Conferencia; XXIV International Conference on Photonic Electronic and Atomic collisions (ICPEAC); 2005

The autoionization of atoms by ion impact can be considered a two step process in which the atom is first excited to an autoionizating state and afterwards decays emitting one electron to the continuum. During the last thirty years, several theoretical approaches have been developed in order to properly describe experimental data (see [1] for a review). A milestone was achieved in 1989 with the measurement of the focusing peak in low energy He+-He collisions [2]. Subsequent experimental studies of the focusing peak were more recently obtained using Ne targets and H+ projectiles [3]. Although the quantum CDW model [1] has successfully reproduced the Coulomb focusing mechanism observed in the experiments, it only considers Coulomb-like projectiles. The line shape dependence on the multi-electronic character of the projectile has yet to be analyzed. In ion-atom collisions involving partially stripped ions, the differential cross sections for single ionization have proved to be richer in structures near the binary peak compared to the fully stripped ions case [4]. In this work, we present new features that partially stripped ions will leave on the spectra. In Fig. 1, we show the binary ring profile for the K-L2,3 L2,3 (1D2) autoionizing state of Ne produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. Although the quantum CDW model [1] has successfully reproduced the Coulomb focusing mechanism observed in the experiments, it only considers Coulomb-like projectiles. The line shape dependence on the multi-electronic character of the projectile has yet to be analyzed. In ion-atom collisions involving partially stripped ions, the differential cross sections for single ionization have proved to be richer in structures near the binary peak compared to the fully stripped ions case [4]. In this work, we present new features that partially stripped ions will leave on the spectra. In Fig. 1, we show the binary ring profile for the K-L2,3 L2,3 (1D2) autoionizing state of Ne produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. studies of the focusing peak were more recently obtained using Ne targets and H+ projectiles [3]. Although the quantum CDW model [1] has successfully reproduced the Coulomb focusing mechanism observed in the experiments, it only considers Coulomb-like projectiles. The line shape dependence on the multi-electronic character of the projectile has yet to be analyzed. In ion-atom collisions involving partially stripped ions, the differential cross sections for single ionization have proved to be richer in structures near the binary peak compared to the fully stripped ions case [4]. In this work, we present new features that partially stripped ions will leave on the spectra. In Fig. 1, we show the binary ring profile for the K-L2,3 L2,3 (1D2) autoionizing state of Ne produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. Although the quantum CDW model [1] has successfully reproduced the Coulomb focusing mechanism observed in the experiments, it only considers Coulomb-like projectiles. The line shape dependence on the multi-electronic character of the projectile has yet to be analyzed. In ion-atom collisions involving partially stripped ions, the differential cross sections for single ionization have proved to be richer in structures near the binary peak compared to the fully stripped ions case [4]. In this work, we present new features that partially stripped ions will leave on the spectra. In Fig. 1, we show the binary ring profile for the K-L2,3 L2,3 (1D2) autoionizing state of Ne produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. +-He collisions [2]. Subsequent experimental studies of the focusing peak were more recently obtained using Ne targets and H+ projectiles [3]. Although the quantum CDW model [1] has successfully reproduced the Coulomb focusing mechanism observed in the experiments, it only considers Coulomb-like projectiles. The line shape dependence on the multi-electronic character of the projectile has yet to be analyzed. In ion-atom collisions involving partially stripped ions, the differential cross sections for single ionization have proved to be richer in structures near the binary peak compared to the fully stripped ions case [4]. In this work, we present new features that partially stripped ions will leave on the spectra. In Fig. 1, we show the binary ring profile for the K-L2,3 L2,3 (1D2) autoionizing state of Ne produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. Although the quantum CDW model [1] has successfully reproduced the Coulomb focusing mechanism observed in the experiments, it only considers Coulomb-like projectiles. The line shape dependence on the multi-electronic character of the projectile has yet to be analyzed. In ion-atom collisions involving partially stripped ions, the differential cross sections for single ionization have proved to be richer in structures near the binary peak compared to the fully stripped ions case [4]. In this work, we present new features that partially stripped ions will leave on the spectra. In Fig. 1, we show the binary ring profile for the K-L2,3 L2,3 (1D2) autoionizing state of Ne produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. + projectiles [3]. Although the quantum CDW model [1] has successfully reproduced the Coulomb focusing mechanism observed in the experiments, it only considers Coulomb-like projectiles. The line shape dependence on the multi-electronic character of the projectile has yet to be analyzed. In ion-atom collisions involving partially stripped ions, the differential cross sections for single ionization have proved to be richer in structures near the binary peak compared to the fully stripped ions case [4]. In this work, we present new features that partially stripped ions will leave on the spectra. In Fig. 1, we show the binary ring profile for the K-L2,3 L2,3 (1D2) autoionizing state of Ne produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. 2,3 L2,3 (1D2) autoionizing state of Ne produced by 60.28 keV/amu H+ and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. + and F+ collisions obtained by sorting 5*106 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. 6 electrons as explained in ref. [5]. Electrons emitted in the forward direction are associated with larger angles in the binary ring and are more sensitive to the projectile nature as can be seen from Fig. 1. The use of partially stripped ions considerably changes the dynamics predicted for pure Coulombic ions. In fact we observe that backscattering can be enhanced by as much as an order of magnitude as is shown below. Figure 1. Binary ring profile for the K-L2,3 L2,3 Figure 1. Binary ring profile for the K-L2,3 L2,3 (1D2) autoionizing state of Ne by H+ and F+ impact. Work supported by DOE-Office of Fusion Energy Sciences. References [1] R. O. Barrachina, Nucl. Instr.and Meth. B 132, 288 (1997). [2] J. K. Swenson et al., Phys. Rev. Lett. 63, 35 (1989). [3] Gy Vikor et al., J. Phys. B: At. Mol. Opt. Phys. 29, L787 (1996). [4] C. O. Reinhold et al., Phys. Rev. Lett. 66, 1842 (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). 29, L787 (1996). [4] C. O. Reinhold et al., Phys. Rev. Lett. 66, 1842 (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). (1989). [3] Gy Vikor et al., J. Phys. B: At. Mol. Opt. Phys. 29, L787 (1996). [4] C. O. Reinhold et al., Phys. Rev. Lett. 66, 1842 (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). 29, L787 (1996). [4] C. O. Reinhold et al., Phys. Rev. Lett. 66, 1842 (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). Work supported by DOE-Office of Fusion Energy Sciences. References [1] R. O. Barrachina, Nucl. Instr.and Meth. B 132, 288 (1997). [2] J. K. Swenson et al., Phys. Rev. Lett. 63, 35 (1989). [3] Gy Vikor et al., J. Phys. B: At. Mol. Opt. Phys. 29, L787 (1996). [4] C. O. Reinhold et al., Phys. Rev. Lett. 66, 1842 (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). 29, L787 (1996). [4] C. O. Reinhold et al., Phys. Rev. Lett. 66, 1842 (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). (1989). [3] Gy Vikor et al., J. Phys. B: At. Mol. Opt. Phys. 29, L787 (1996). [4] C. O. Reinhold et al., Phys. Rev. Lett. 66, 1842 (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). 29, L787 (1996). [4] C. O. Reinhold et al., Phys. Rev. Lett. 66, 1842 (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). (1991). [5] S. Otranto and G. Gasaneo, Phys. Scripta 70, 251 (2004). 1D2) autoionizing state of Ne by H+ and F+ impact. Work supported by DOE-Office of Fusion Energy Sciences. References [1] R. O. Barrachina, Nucl. Instr.and Meth. B 132, 288 (1997). [2] J. K. Swenson et al., Phys. Rev. Lett. 63, 35 (1989). [3] Gy Vikor