Shape and dynamics of the 33D state of helium excited by 40 eV electrons

Autor:	Albert Crowe, Igor Bray, Dmitry V. Fursa, B.P. Donnelly, Damien T. McLaughlin
Rok vydání:	1994
Předmět:	Physics Scattering chemistry.chemical_element Electron Condensed Matter Physics Polarization (waves) Atomic and Molecular Physics and Optics chemistry Excited state Perpendicular Atomic physics Circular polarization Helium Excitation
Zdroj:	Journal of Physics B: Atomic, Molecular and Optical Physics. 27:L795-L801
ISSN:	1361-6455 0953-4075
DOI:	10.1088/0953-4075/27/24/002
Popis:	Experimental and theoretical studies of excitation of the 33D state of helium by 40 eV electrons are reported. Experimentally, electron-photon polarization correlations are measured in the scattering plane defined by the incident and scattered electron momenta. These are combined with previously reported linear and circular polarization measurements perpendicular to the scattering plane. After allowing for the effects of fine structure depolarization, parameters describing the shape and dynamics of the excited state produced in the collision are determined. Theoretically, the measured polarizations and excited state parameters are predicted using the convergent close coupling (CCC) theory. Excellent agreement is obtained between the experimental and theoretical results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::30e1681b55bddee1a0ad281480b1211d https://doi.org/10.1088/0953-4075/27/24/002 Zobrazit plný text záznamu