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Phys. Rev. A 72, 032715 (2005) [8 pages]

Electron-impact ionization of hydrogen and lithiumlike systems

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M. A. Uddin *, A. K. F. Haque, and A. K. Basak
Department of Physics, University of Rajshahi, Rajshahi-6205, Bangladesh

K. R. Karim
Department of Physics, Illinois State University, Normal, Illinois 61790, USA

B. C. Saha
Department of Physics, Florida A & M University, Tallahassee, Florida 32307, USA

Received 21 June 2005; published 14 September 2005

The electron impact single ionization cross sections on a number of targets with atomic number Z=1–92 in the H and Li isoelectronic sequences are calculated using a modified version of the recently propounded relativisitic improved binary-encounter dipole (MRIBED) model [M. A. Uddin et al., Phys. Rev. A 70, 032706 (2004); 71, 032715 (2005)]. The modified RQIBED (MRIBED) model along with a Z -dependent factor in it is found remarkably successful in the applications to H- and Li-like systems and also valid for the ionization of a filled s orbit including the He-like targets.


©2005 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.72.032715
DOI: 10.1103/PhysRevA.72.032715
PACS: 34.80.Dp

* Electronic address: uddinmda@yahoo.com

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