Physics – General Physics
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phrva..31.2922v&link_type=abstract
Physical Review A - General Physics, 3rd Series (ISSN 0556-2791), vol. 31, May 1985, p. 2922-2931. NSF-supported research.
Physics
General Physics
32
Atomic Collisions, Atomic Excitations, Emission Spectra, Gas-Gas Interactions, Hydrogen Atoms, Neon, Balmer Series, Calibrating, Electron States, Lyman Alpha Radiation, Radiation Detectors, Electronic Excitation And Ionization Of Molecules, Intermediate Molecular States, Charge Transfer, Molecular Excitation And Ionization By Electron Impact
Scientific paper
Excitation of 0.05 - 2.5 keV H atoms in H + Ne collisions has been examined by measuring the absolute emission cross sections for Balmer-alpha, Balmer-beta, and Lyman-alpha radiations resulting from the collisions. Lyman-alpha emission was also observed when an electric field was applied in the interaction region to investigate excitation of H atoms to the (metastable) 2s state. The radiation polarization for each of the above emissions was measured. A new method for absolute calibration of the Lyman-alpha detector is described, and Lyman-alpha emission cross sections for H(+) + Ar and e(-) _ H2 collisions are compared with previous results, the latter reaction giving a significantly smaller cross section than generally accepted. The peculiar behavior of the H + Ne interaction indicated by the measurements is discussed.
Gealy M. W.
Neumann Hannes
Van Zyl Braam
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