Electron- and positron-impact atomic scattering calculations using propagating exterior complex scaling

P.L. Bartlett; A.T. Stelbovics; T.N. Rescigno; C.W. McCurdy

doi:10.1088/1742-6596/88/1/012011

Back

Electron- and positron-impact atomic scattering calculations using propagating exterior complex scaling

Journal article

Open access

Peer reviewed

Electron- and positron-impact atomic scattering calculations using propagating exterior complex scaling

P.L. Bartlett, A.T. Stelbovics, T.N. Rescigno and C.W. McCurdy

Journal of Physics: Conference Series, Vol.88(1)

01/11/2007

DOI: https://doi.org/10.1088/1742-6596/88/1/012011

Files and links (2)

pdf

propagating_exterior_complex_scaling.pdfDownload View

Published (Version of Record) Open Access

url

Free to Read *No subscription requiredView

Abstract

Calculations are reported for four-body electron-helium collisions and positron-hydrogen collisions, in the S-wave model, using the time-independent propagating exterior complex scaling (PECS) method. The PECS S-wave calculations for three-body processes in electron-helium collisions compare favourably with previous convergent close-coupling (CCC) and time-dependent exterior complex scaling (ECS) calculations, and exhibit smooth cross section profiles. The PECS four-body double-excitation cross sections are significantly different from CCC calculations and highlight the need for an accurate representation of the resonant helium final-state wave functions when undertaking these calculations. Results are also presented for positron-hydrogen collisions in an S-wave model using an electron-positron potential of V12 = - (8 + (r1 - r2)2)-1/2. This model is representative of the full problem, and the results demonstrate that ECS-based methods can accurately calculate scattering, ionization and positronium formation cross sections in this three-body rearrangement collision.

Details

Title: Electron- and positron-impact atomic scattering calculations using propagating exterior complex scaling
Authors/Creators: P.L. Bartlett (Author/Creator) - Murdoch University
A.T. Stelbovics (Author/Creator) - Curtin University
T.N. Rescigno (Author/Creator) - Lawrence Berkeley National Laboratory
C.W. McCurdy (Author/Creator) - University of California, Davis
Publication Details: Journal of Physics: Conference Series, Vol.88(1)
Publisher: Institute of Physics Publishing
Identifiers: 991005540385207891
Murdoch Affiliation: School of Engineering and Energy
Language: English
Resource Type: Journal article

UN Sustainable Development Goals (SDGs)

This output has contributed to the advancement of the following goals:

Source: InCites

Metrics

208 File views/ downloads

72 Record Views

2 Times Cited - Web of Science