Differential cross sections for the production of H atoms in collisional electron detachment of H/sup -/ ions on He, H, and H/sub 2/ targets

Journal Article · Thu Feb 01 00:00:00 EST 1979 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.19.526· OSTI ID:6467476

Lee, Y T; Chen, J C

The differential cross sections for collisional electron detachment of H/sup -/ ions by He, H, and H/sub 2/ targets in the 100-keV--10-MeV energy region is investigated. The summation over all the final states which contribute to electron detachment is carried out in the closure approximation using the concept of the average energy loss at a fixed scattering angle. In the Born approximation, the differential cross section for electron-detachment collisions is strongly peaked in the forward direction. We have also studied nondetachment collisions in the Born approximation. One of the interesting features associated with nondetachment collisions is the zero in the differential cross section near the forward direction. Results for the total electron-detachment cross section are also presented and compared with experiment where measurements are available.

• Research Organization: Physical Dynamics, Incorporated, P.O. Box 556, La Jolla, California 92038
• OSTI ID: 6467476
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 19:2; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
ATOM COLLISIONS
BORN APPROXIMATION
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
CRYOGENIC FLUIDS
DIFFERENTIAL CROSS SECTIONS
ELECTRON DETACHMENT
ELEMENTS
ENERGY RANGE
FLUIDS
HELIUM
HYDROGEN
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
ION COLLISIONS
ION-ATOM COLLISIONS
ION-MOLECULE COLLISIONS
IONS
KEV RANGE
KEV RANGE 100-1000
MOLECULE COLLISIONS
NONMETALS
RARE GASES