Electron capture into the 3s state of atomic hydrogen by H/sup +/ on Kr and Xe
Absolute cross sections for electron capture into the 3s state of atomic hydrogen have been measured for 10-150-keV proton impact on Kr and Xe. The experimental procedure involved the quantitative measurement of the Balmer-alpha radiation emitted by the spontaneous decay of fast hydrogen atoms in flight. The 3s-state radiation was identified by its characteristic lifetime. The cross sections for both target gases reach a maximum in the projectile energy range under consideration. The Xe cross sections are approximately 40% higher than those for Kr near 25 keV but are similar above 80 keV. These values are consistent with existing 3s cross-section measurements and with an n/sup -3/ scaling of existing total electron-capture cross sections in accordance with Born-approximation predictions.
- Research Organization:
- Physics Department, East Texas State University, Commerce, Texas 75428
- OSTI ID:
- 5201474
- Journal Information:
- Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 17:1; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
BEAMS
CAPTURE
CATIONS
CHARGED PARTICLES
COLLISIONS
CRYOGENIC FLUIDS
ELECTRON CAPTURE
ELEMENTS
ENERGY RANGE
FLUIDS
HYDROGEN
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION BEAMS
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
KEV RANGE 10-100
KEV RANGE 100-1000
KRYPTON
NONMETALS
RARE GASES
XENON