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Cross-section; exchange effects; relativistic electrons; scattering.

The triple differential cross-section for K-shell ionization of silver and copper atoms by relativistic electrons have been computed in the coplanar symmetric geometry with the inclusion of exchange effects following the multiple scattering theory of Das and Seal [1] multiplied by suitable spinors. Present computed results are marginally improved in some cases from the previous computed results [2]. Present results are compared with measured values [3] and with previous computation results [2]. Some other theoretical computational results are also presented here for comparison.

S Dhar¹ M R Alam²

1. Department of Mathematics, Chittagong University of Engineering and Technology, Chittagong 4349, Bangladesh
2. Department of Electrical & Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong 4349, Bangladesh

Published

September 2007

Manuscript received

13 November 2006

Manuscript revised

21 May 2007

Accepted

5 July 2007