K -shell photoionization of beryllium

Journal Article · Fri Dec 15 04:00:00 EST 1989 · Physical Review (Section) A: General Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevA.40.7020· OSTI ID:7265912

Saha, H P; Caldwell, C D ^[1]

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1. Department of Physics, University of Central Florida, Orlando, Florida 32816 (US)

The numerical multiconfiguration Hartree-Fock method is used to study in detail the photoionization of atomic beryllium near the 1{ital s} threshold. Electron correlation effects, which are found to be very important in the {ital K}-shell partial photoionization cross section, have been taken into account very accurately through the configuration-interaction procedure. The present results are compared with experimental measurements of the relative contributions of the three major ionization channels and are found to be in excellent agreement. The existence of the principal resonances reported by the experiment has been confirmed and assignments made to these contributions based on accurate energy calculations.

• OSTI ID: 7265912
• Journal Information: Physical Review (Section) A: General Physics; (USA), Journal Name: Physical Review (Section) A: General Physics; (USA) Vol. 40:12; ISSN PLRAA; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ALKALINE EARTH METALS
ATOMS
BERYLLIUM
CORRELATIONS
ELECTRON CORRELATION
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY
HARTREE-FOCK METHOD
IONIZATION
K SHELL
MANY-BODY PROBLEM
METALS
PHOTOIONIZATION
RESONANCE
THRESHOLD ENERGY
TWO-BODY PROBLEM