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Vibrationally inelastic electron scattering in a two-channel approximation

SYSNO ASEP	0309726
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Vibrationally inelastic electron scattering in a two-channel approximation
Title	Vibrační neelastický elektronový rozptyl ve dvoukanálovém přiblížení
Author(s)	Čársky, Petr (UFCH-W)_{RID, ORCID} Čurík, Roman (UFCH-W)_{RID, ORCID}
Source Title	Journal of Physics B-Atomic Molecular and Optical Physics. - : Institute of Physics Publishing - ISSN 0953-4075 Roč. 41, č. 5 (2008), , , 055203-1-6
Number of pages	6 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	inelastic electron scattering ; two-channel approximation
Subject RIV	CF - Physical ; Theoretical Chemistry
R&D Projects	IAA100400501 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	1ET400400413 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	KJB400400803 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	GA202/08/0631 GA ČR - Czech Science Foundation (CSF)
	ME 857 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z40400503 - UFCH-W (2005-2011)
UT WOS	000253547700012
DOI	10.1088/0953-4075/41/5/055203
Annotation	We present an approximation and simplification of the two- channel approach to vibrational electron energy loss spectra, which reduces considerably computer memory requirements. Instead of operations with 2N x 2N matrices, the Lippmann - Schwinger equation is solved in two consecutive single- channel steps in which the size of all matrices is only N x N. The procedure was tested on water, methane and cyclopropane molecules for several electron energies in the range of 1 to 20 eV. For all vibrational modes, electron energies and scattering angles, the calculated differential and integral cross sections were in excellent agreement with those calculated by the rigorous two- channel procedure.
Workplace	J. Heyrovsky Institute of Physical Chemistry
Contact	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Year of Publishing	2009

Number of the records: 1