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Title: Double autoionization of hollow-atom states

Abstract

A time-dependent close-coupling method for three-electron atomic systems is formulated to calculate the double autoionization of hollow-atom states. Initial excited states are obtained by relaxation of the Schroedinger equation in imaginary time, while autoionization rates are obtained by propagation in real time. A 12-coupled-channels nonperturbative calculation on a three-dimensional radial lattice yields a double-autoionization rate for the Li(2s{sup 2}2p){yields}Li{sup 2+}(1s)+2e{sup -} transition that that is somewhat smaller than earlier many-body perturbation theory calculations and in reasonable agreement with rates extracted from resonance profiles found in more recent {gamma}+Li experiments.

Authors:
; ;  [1];  [2]
  1. Department of Physics, Auburn University, Auburn, Alabama 36849 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20718129
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 72; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.72.022709; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; AUTOIONIZATION; COUPLED CHANNEL THEORY; COUPLING; ELECTRON-ATOM COLLISIONS; ELECTRONS; EXCITED STATES; LITHIUM; MANY-BODY PROBLEM; PERTURBATION THEORY; RELAXATION; RESONANCE; SCHROEDINGER EQUATION; THREE-DIMENSIONAL CALCULATIONS; TIME DEPENDENCE

Citation Formats

Pindzola, M.S., Robicheaux, F., Colgan, J., and Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545. Double autoionization of hollow-atom states. United States: N. p., 2005. Web. doi:10.1103/PhysRevA.72.022709.
Pindzola, M.S., Robicheaux, F., Colgan, J., & Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545. Double autoionization of hollow-atom states. United States. doi:10.1103/PhysRevA.72.022709.
Pindzola, M.S., Robicheaux, F., Colgan, J., and Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545. Mon . "Double autoionization of hollow-atom states". United States. doi:10.1103/PhysRevA.72.022709.
@article{osti_20718129,
title = {Double autoionization of hollow-atom states},
author = {Pindzola, M.S. and Robicheaux, F. and Colgan, J. and Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545},
abstractNote = {A time-dependent close-coupling method for three-electron atomic systems is formulated to calculate the double autoionization of hollow-atom states. Initial excited states are obtained by relaxation of the Schroedinger equation in imaginary time, while autoionization rates are obtained by propagation in real time. A 12-coupled-channels nonperturbative calculation on a three-dimensional radial lattice yields a double-autoionization rate for the Li(2s{sup 2}2p){yields}Li{sup 2+}(1s)+2e{sup -} transition that that is somewhat smaller than earlier many-body perturbation theory calculations and in reasonable agreement with rates extracted from resonance profiles found in more recent {gamma}+Li experiments.},
doi = {10.1103/PhysRevA.72.022709},
journal = {Physical Review. A},
issn = {1050-2947},
number = 2,
volume = 72,
place = {United States},
year = {2005},
month = {8}
}