Excitation of low lying excited states of hydrogen in collisions of H/sup -/ with selected rare gases and molecular nitrogen. [1 to 5 keV H/sup -/]
Thesis/Dissertation
·
OSTI ID:7312270
Cross sections for the production of hydrogen atoms in the 3s, 3d, 4s, and 5s states by H/sup -/ impact on He, Ar, Xe, and N/sub 2/ have been measured for H/sup -/ energy from 1 to 5 keV. These cross sections are found to be relatively energy independent and several times larger than corresponding cross sections for H impact. Measurements have been presented giving an upper bound to the polarization fraction for emission from the 3d state and the 4p-4d state mixture. The measured polarization fractions are always less than +0.30. Additionally, measurements of emission from the target gases have been made in the region of Balmer-..cap alpha.., Balmer-..beta.., and Balmer-..gamma... H/sup -/ impact on Xe produces significant emission in the region of Balmer-..beta.., but no other radiation is found to conflict with the hydrogen emission over a 7.5 nm bandpass.
- Research Organization:
- Washington Univ., Seattle (USA)
- OSTI ID:
- 7312270
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
ARGON
ATOM COLLISIONS
BALMER LINES
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
CRYOGENIC FLUIDS
D STATES
ELEMENTS
ENERGY LEVELS
FLUIDS
HELIUM
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
ION COLLISIONS
ION-ATOM COLLISIONS
ION-MOLECULE COLLISIONS
IONS
MOLECULE COLLISIONS
NITROGEN
NONMETALS
P STATES
RARE GASES
S STATES
XENON
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
ARGON
ATOM COLLISIONS
BALMER LINES
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
CRYOGENIC FLUIDS
D STATES
ELEMENTS
ENERGY LEVELS
FLUIDS
HELIUM
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
ION COLLISIONS
ION-ATOM COLLISIONS
ION-MOLECULE COLLISIONS
IONS
MOLECULE COLLISIONS
NITROGEN
NONMETALS
P STATES
RARE GASES
S STATES
XENON