科研之友
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摘要
The theoretical and numerical approach used in a recent publication describing a nonperturbative treatment of ionization and simultaneous ionization plus excitation of helium by electron impact [Phys. Rev. Lett. 107, 023203 (2011)] are presented in detail. A variety of comparisons between the present predictions, experimental data, and results from other nonperturbative theories, such as convergent close coupling and time-dependent close coupling, for ionization without excitation are presented. The overall excellent agreement with the other available data provides confidence in using the B-spline R-matrix-with-pseudostates approach for this benchmark system, as well as extending it to more complex situations for which no other nonperturbative methods are currently available.
- 出版日期2012-6-26
