Electron Impact Single and Double Ionization of Helium calculated with Generalized Sturmian Functions

D.M. MITNIK; M.J. AMBROSIO; G. GASANEO; A.I. GÓMEZ; L.U. ANCARANI

Princeton, New Jersey

Congreso; Gaseous Electronics Conference (GEC); 2013

American Physical Society

http://meetings.aps.org/link/BAPS.2013.GEC.KW5.4The single and double ionization of He induced by the collision of high incident energy electrons still remains a challengingproblem for theoreticians. Several ab initio calculations (see [1]) of excitation-ionization disagree which each other and withthe experimental data [2]. A similar situation is found for the double ionization of He [3]. In this talk, we will providecross sections for both processes calculated by using the Generalized Sturmian Functions method [4,5]. Comparisons withexperimental data [6] and with other calculations will be presented.[1] J.M. Ngoko Djiokap et al, Phys. Rev. A 81, 042712 (2010).[2] C. Dupre et al, J. Phys. B 25, 259 (1992).[3] L.U. Ancarani, et al, J. Phys.: Conf. Ser. 212, 012025 (2010).[4] D M Mitnik et al, Comp. Phys. Comm. 182 1145 (2011).[5] G. Gasaneo et al, Accepted in Adv. Quantum Chem. (2013).[6] A Lahmam-Bennani et al, J. Phys. B 42 165201 (1999); A. Kheifets et al, J. Phys. B 32, 5047 (1999).