Lyman-. cap alpha. emission from H/sup +/ impact on rare-gas atoms

Journal Article · Mon Jun 01 04:00:00 EDT 1987 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.35.4551· OSTI ID:6010444

Van Zyl, B; Gealy, M W; Neumann, H

Absolute cross sections for the emission of Lyman-..cap alpha.. radiation have been measured for low-energy H/sup +/ impact on rare-gas-atom targets. Data were obtained for H/sup +/ energies from 2.0 keV down to 1.0 keV for He targets, to 0.5 keV for Ne targets, to 0.05 keV for Ar and Kr targets, and to 0.013 keV for Xe targets. The polarizations of the emitted Lyman-..cap alpha.. radiation were also measured. Using previously measured cross sections for Balmer-..cap alpha.. and Balmer-..beta.. emission for the same collisions, it was possible to make an approximate determination of the cascade contributions to the total Lyman-..cap alpha.. emission, and to extract the cross sections for direct population of the 2p state of hydrogen during the collisions. The results are compared with the work of other investigators at higher H/sup +/ energies in an attempt to deduce the best working values of these cross sections for H/sup +/ energies up to 100 keV.

• Research Organization: Department of Physics, University of Denver, Denver, Colorado 80208
• OSTI ID: 6010444
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 35:11; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
BALMER LINES
CATIONS
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
COMPARATIVE EVALUATIONS
CROSS SECTIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
GASES
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
KEV RANGE 01-10
LYMAN LINES
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NONMETALS
POLARIZATION
RARE GASES