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Title: Recommended electron-impact excitation and ionization cross sections for Be I
Analytic fits to the recommended electron-impact excitation and ionization cross sections for Be I are presented. The lowest 19 terms of configurations 2snl (n≤4) and 2p2 terms below the first ionization limit are considered. The fits are based on the accurate calculations with the convergent close coupling (CCC) method as well as the B-spline R-matrix (BSR) approach. The fitted cross sections provide rate coefficients that are believed to approximate the original data within 10% with very few exceptions. The oscillator strengths for the dipole-allowed transitions between all the considered states are calculated with the relativistic multi-configuration Dirac–Hartree–Fock (MCDHF) approach and compared with the CCC and BSR results. This comparison shows a very good agreement except for a handful of cases with likely strong cancellations.  more » « less
Award ID(s):
1803844 1403245
NSF-PAR ID:
10094709
Author(s) / Creator(s):
Date Published:
Journal Name:
Atomic data and nuclear data tables
Volume:
127-128
ISSN:
0092-640X
Page Range / eLocation ID:
1-21
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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