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Electron; excitation; atoms; complete experiment

We have used non-relativistic and relativistic distorted wave approximation methods to study the excitation of then¹D states of magnesium (n = 3), calcium (n = 4) and strontium (n = 5) from the ground n¹S state. Calculations have been performed for the complete set of parameters (σ,$$\tilde L_ \bot ^ + ,\tilde L_ \bot ^ - ,\tilde \gamma ^ + ,\tilde \gamma ^ - $$). The results are presented for electron impact energies of 20 and 40 eV. We compare our results obtained from both the non-relativistic and relativistic methods with each other. Good agreement is found on comparison and the importance of relativistic effects is also explored.

Sachin Saxena¹ Kshamata Muktavat^{1 2} Rajesh Srivastava¹

1. Department of Physics, Indian Institute of Technology, Roorkee - 247 667, India
2. Physics Department, Government PG College, Rampur - 244 901, India

Published

November 2004

Manuscript received

24 December 2003

Manuscript revised

27 June 2004

Accepted

31 July 2004