IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Distribution of emitted electrons by short-laser pulses: dominant angular momentum near threshold
Autor/es:
D. G. ARBÓ, S. YOSHIDA, E. PERSSON, Y J. BURGDÖRFER
Lugar:
Freiburg, Alemania
Reunión:
Conferencia; XXV International Conference on the Photonic, Electronic and Atomic Collisions; 2007
Resumen:
As increasingly shorter pulses (fs) became available, the interaction of few-cycle laser pulses with matter has attracted considerable interest. Rudenko et al. [1] and Maharjan et al. [2] presented fully two-dimensional (kz,kr) momentum maps for laser-ionized electrons for different rare gases. We present a theoretical study of atomic single ionization driven by a linearly polarized short laser pulse within the single electron approximation. Unlike in the multiphoton regime, a simple semiclassical analysis of the interference pattern in the angular distribution can be performed in the tunneling regime. We show that the electron released with low momentum in the tunneling regime experiences Ramsauer-Townsend interference processes displaying a “bouquet” shape structure (fig. 1) in the first multiphoton ring. References   [1] A. Rudenko et al., J. Phys. B 37, L407 (2004). [2] C.M. Maharjan et al., J. Phys. B 39, 1955 (2006). [3] D.G. Arbó et al., Phys. Rev. Lett. 96, 143003 (2006). [4] Z. Chen et al., Phys. Rev. A 74, 053405 (2006); M. Wickenhauser et al., Phys. Rev. A 74, 041402(R) (2006). [5] A. de Bohan, Ph.D. Thesis, 2001. [6] S. Dionissopoulou et al., Phys. Rev. A 55, 4397 (1997).