Colgan J, Pindzola MS, Mitnik DM, Griffin DC, Bray I. Benchmark nonperturbative calculations for the electron-impact ionization of Li(2s) and Li(2p).
PHYSICAL REVIEW LETTERS 2001;
87:213201. [PMID:
11736338 DOI:
10.1103/physrevlett.87.213201]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2001] [Indexed: 05/23/2023]
Abstract
Three independent nonperturbative calculations are reported for the electron-impact ionization of both the ground and first excited states of the neutral lithium atom. The time-dependent close-coupling, the R matrix with pseudostates, and the converged close-coupling methods yield total integral cross sections that are in very good agreement with each other, while perturbative distorted-wave calculations yield cross sections that are substantially higher. These nonperturbative calculations provide a benchmark for the continued development of electron-atom experimental methods designed to measure both ground and excited state ionization.
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