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Title: Electron-helium scattering in the S-wave model using exterior complex scaling

Abstract

Electron-impact excitation and ionization of helium is studied in the S-wave model. The problem is treated in full dimensionality using a time-dependent formulation of the exterior complex scaling method that does not involve the solution of large linear systems of equations. We discuss the steps that must be taken to compute stable ionization amplitudes. We present total excitation, total ionization and single differential cross sections from the ground and n=2 excited states and compare our results with those obtained by others using a frozen-core model.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director. Office of Science. Office of Basic Energy Sciences. Chemical Sciences Geosciences and Biosciences Division, Computational Science Graduate Fellowship Program (US)
OSTI Identifier:
837809
Report Number(s):
LBNL-55508
R&D Project: 409601; TRN: US0501112
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review A; Journal Volume: 71; Journal Issue: 1; Other Information: Submitted to Physical Review A: Volume 71, No.1; Journal Publication Date: 01/05; PBD: 16 Jun 2004
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; AMPLITUDES; DIFFERENTIAL CROSS SECTIONS; EXCITATION; EXCITED STATES; HELIUM I; IONIZATION; SCATTERING

Citation Formats

Horner, Daniel A., McCurdy, C. William, and Rescigno, Thomas N.. Electron-helium scattering in the S-wave model using exterior complex scaling. United States: N. p., 2004. Web.
Horner, Daniel A., McCurdy, C. William, & Rescigno, Thomas N.. Electron-helium scattering in the S-wave model using exterior complex scaling. United States.
Horner, Daniel A., McCurdy, C. William, and Rescigno, Thomas N.. Wed . "Electron-helium scattering in the S-wave model using exterior complex scaling". United States. https://www.osti.gov/servlets/purl/837809.
@article{osti_837809,
title = {Electron-helium scattering in the S-wave model using exterior complex scaling},
author = {Horner, Daniel A. and McCurdy, C. William and Rescigno, Thomas N.},
abstractNote = {Electron-impact excitation and ionization of helium is studied in the S-wave model. The problem is treated in full dimensionality using a time-dependent formulation of the exterior complex scaling method that does not involve the solution of large linear systems of equations. We discuss the steps that must be taken to compute stable ionization amplitudes. We present total excitation, total ionization and single differential cross sections from the ground and n=2 excited states and compare our results with those obtained by others using a frozen-core model.},
doi = {},
journal = {Physical Review A},
number = 1,
volume = 71,
place = {United States},
year = {Wed Jun 16 00:00:00 EDT 2004},
month = {Wed Jun 16 00:00:00 EDT 2004}
}