Electron detachment in Na/sup -/, K/sup -/--rare-gas collisions
Journal Article
·
· Phys. Rev. A; (United States)
Absolute total cross sections for electron detachment have been measured for collisions of Na/sup -/ and K/sup -/ with rare gases at relative collision energies ranging from a few eV to about 200 eV. These alkali-metal anions, which are characterized by angularly correlated ns/sup 2/ electrons, are observed to be extremely stable with respect to collisional electron detachment. For the Na/sup -/-Ne and K/sup -/-Ar,Kr,Xe systems, the salient features of the detachment cross sections are described by a simple curve-crossing model. Cross sections for Na/sup -/-He,Ar,Kr,Xe and K/sup -/-He,Ne remain small (<0.5 A/sup 2/) throughout the energy range studied. Striking similarities are observed between the energy dependence of these detachment cross sections and that of the cross sections for projectile excitation which results from neutral-alkali-metal--rare-gas collisions.
- Research Organization:
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23185
- OSTI ID:
- 5604314
- Journal Information:
- Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 32:1; ISSN PLRAA
- 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
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DATA
ELECTRON DETACHMENT
ELEMENTS
ENERGY DEPENDENCE
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
EXCITATION
EXPERIMENTAL DATA
FLUIDS
GASES
INFORMATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
NONMETALS
NUMERICAL DATA
POTASSIUM IONS
RARE GASES
SODIUM IONS
TOTAL CROSS SECTIONS
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DATA
ELECTRON DETACHMENT
ELEMENTS
ENERGY DEPENDENCE
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
EXCITATION
EXPERIMENTAL DATA
FLUIDS
GASES
INFORMATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
NONMETALS
NUMERICAL DATA
POTASSIUM IONS
RARE GASES
SODIUM IONS
TOTAL CROSS SECTIONS