skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Numerical multiconfiguration self-consistent-field studies of atomic photoionization cross sections: Dynamical core-polarization effects in atomic potassium

Abstract

The numerical multiconfiguration self-consistent-field method is used to calculate photoionization cross sections of atomic potassium in its ground state for photoelectron energies ranging from 0.0 to 12 eV. The effects of core polarization, which are very important for this atom, are analyzed in detail and are taken into account effectively ab initio in both the initial and the final state, by the configuration-interaction procedure. It is found that the core-polarization effect is very strong in the photoionization cross section of potassium. Our results are found to be in good agreement with previous theoretical calculations throughout the energy region considered and also with experiment except at high energies.

Authors:
Publication Date:
Research Org.:
Department of Physics, University of Central Florida, Orlando, Florida 32816-0993
OSTI Identifier:
6538026
Resource Type:
Journal Article
Journal Name:
Phys. Rev. A; (United States)
Additional Journal Information:
Journal Volume: 39:2
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; POTASSIUM; PHOTOIONIZATION; ATOMS; CONFIGURATION INTERACTION; CROSS SECTIONS; ELECTRONIC STRUCTURE; EV RANGE 01-10; POLARIZATION; SELF-CONSISTENT FIELD; ALKALI METALS; ELEMENTS; ENERGY RANGE; EV RANGE; IONIZATION; METALS; 640302* - Atomic, Molecular & Chemical Physics- Atomic & Molecular Properties & Theory

Citation Formats

Saha, H P. Numerical multiconfiguration self-consistent-field studies of atomic photoionization cross sections: Dynamical core-polarization effects in atomic potassium. United States: N. p., 1989. Web. doi:10.1103/PhysRevA.39.628.
Saha, H P. Numerical multiconfiguration self-consistent-field studies of atomic photoionization cross sections: Dynamical core-polarization effects in atomic potassium. United States. doi:10.1103/PhysRevA.39.628.
Saha, H P. Sun . "Numerical multiconfiguration self-consistent-field studies of atomic photoionization cross sections: Dynamical core-polarization effects in atomic potassium". United States. doi:10.1103/PhysRevA.39.628.
@article{osti_6538026,
title = {Numerical multiconfiguration self-consistent-field studies of atomic photoionization cross sections: Dynamical core-polarization effects in atomic potassium},
author = {Saha, H P},
abstractNote = {The numerical multiconfiguration self-consistent-field method is used to calculate photoionization cross sections of atomic potassium in its ground state for photoelectron energies ranging from 0.0 to 12 eV. The effects of core polarization, which are very important for this atom, are analyzed in detail and are taken into account effectively ab initio in both the initial and the final state, by the configuration-interaction procedure. It is found that the core-polarization effect is very strong in the photoionization cross section of potassium. Our results are found to be in good agreement with previous theoretical calculations throughout the energy region considered and also with experiment except at high energies.},
doi = {10.1103/PhysRevA.39.628},
journal = {Phys. Rev. A; (United States)},
number = ,
volume = 39:2,
place = {United States},
year = {1989},
month = {1}
}