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Polarization of Lyman-Alpha Radiation from Atomic Hydrogen Excited by Electron Impact form Near Threshold to 1800 eVThe polarization of Lyman-a radiation, produced by electron-impact excitation of atomic hydrogen, has been measured over the extended energy range from near threshold to 1800 eV. Measurements were obtained in a crossed-beam experiment using a silica-reflection linear polarization analyzer in tandem with a vacuum-ultraviolet monochromator to isolate the emitted line radiation. Comparison with various theoretical calculations shows that the present experimental results are in good agreement with theory over the entire range of electron-impact energies and, in particular, are in excellent agreement with theoretical convergent-close-coupling (CCC) calculations performed in the present work. Our polarization data are significantly different from the previous experimental measurements of Ott, Kauppila, and Fite.
Document ID
20000101017
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
Authors
James, G. K.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Slevin, J. A.
(National Univ. of Ireland Maynooth, Ireland)
Dziczek, D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
McConkey, J. W.
(Windsor Univ. Ontario Canada)
Bray, Igor
(Flinders Univ. Adelaide, Australia)
Date Acquired
August 19, 2013
Publication Date
March 1, 1998
Publication Information
Publication: Physical Review A: Atomic, Molecular and Optical Physics
Publisher: American Physical Society
Volume: 57
Issue: 3
ISSN: 1050-2947
Subject Category
Atomic And Molecular Physics
Funding Number(s)
CONTRACT_GRANT: NSF PHY-97-22748
Distribution Limits
Public
Copyright
Other

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