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Title: Application of exterior complex scaling to positron-hydrogencollisions including rearrangement

Abstract

The first application of an exterior complex scaling method to an atomic scattering problem with distinct rearrangement channels is reported. Calculations are performed for positron-hydrogen collisions in an s-wave model employing an electron-positron potential of V{sub 12} = -(8+(r{sub 1}-r{sub 2}){sup 2}){sup 1/2}, using the time-independent propagating exterior complex scaling (PECS) method. This potential has the correct long-range Coulomb tail 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.

Authors:
; ; ;
Publication Date:
Research Org.:
COLLABORATION - MurdochU./Australia
OSTI Identifier:
929504
Report Number(s):
LBNL-63759
Journal ID: ISSN 1050-2947; PLRAAN; R&D Project: 409601; BnR: KC0301030; TRN: US0803601
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
PhysicalReview A
Additional Journal Information:
Journal Volume: 77; Related Information: Journal Publication Date: 2008; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74; CROSS SECTIONS; IONIZATION; POSITRONIUM; SCATTERING

Citation Formats

Bartlett, Philip L, Stelbovics, Andris T, Rescigno, Thomas N, and McCurdy, C William. Application of exterior complex scaling to positron-hydrogencollisions including rearrangement. United States: N. p., 2007. Web.
Bartlett, Philip L, Stelbovics, Andris T, Rescigno, Thomas N, & McCurdy, C William. Application of exterior complex scaling to positron-hydrogencollisions including rearrangement. United States.
Bartlett, Philip L, Stelbovics, Andris T, Rescigno, Thomas N, and McCurdy, C William. 2007. "Application of exterior complex scaling to positron-hydrogencollisions including rearrangement". United States. https://www.osti.gov/servlets/purl/929504.
@article{osti_929504,
title = {Application of exterior complex scaling to positron-hydrogencollisions including rearrangement},
author = {Bartlett, Philip L and Stelbovics, Andris T and Rescigno, Thomas N and McCurdy, C William},
abstractNote = {The first application of an exterior complex scaling method to an atomic scattering problem with distinct rearrangement channels is reported. Calculations are performed for positron-hydrogen collisions in an s-wave model employing an electron-positron potential of V{sub 12} = -(8+(r{sub 1}-r{sub 2}){sup 2}){sup 1/2}, using the time-independent propagating exterior complex scaling (PECS) method. This potential has the correct long-range Coulomb tail 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.},
doi = {},
url = {https://www.osti.gov/biblio/929504}, journal = {PhysicalReview A},
issn = {1050-2947},
number = ,
volume = 77,
place = {United States},
year = {Thu Dec 06 00:00:00 EST 2007},
month = {Thu Dec 06 00:00:00 EST 2007}
}