Angular differential and total cross sections for the excitation of atomic hydrogen to its n=2 state by helium ions

Journal Article · Sun Mar 01 04:00:00 EST 1981 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.23.1062· OSTI ID:6635141

Aldag, J E; Peacher, J L; Martin, P J; Sutcliffe, V; George, J; Redd, i; Kvale, T J; Blankenship, D M; Park, J T

Differential cross sections for 15--100 keV He/sup +/ excitation of atomic hydrogen to its n=2 level have been determined for c.m. angles from 0 to 8 mrad. The differential cross sections are obtained from an analysis of the angular distribution of the scattered ions which have lost an energy corresponding to the excitation of the target to its n=2 level. The shape of the differential cross section changes rapidly with increasing incident energy. At 15 keV, the differential cross section falls off by a factor of 5 in 6 mrad. At 100 keV, the differential cross section decreases by nearly six orders of magnitude in the same angular range. The higher-energy results are in fair agreement with a recent symmetrized first-order Glauber approximation calculation of the process. Total cross section results are given for the same process in the 15--200 keV range.

• Research Organization: Physics Department, University of Missouri at Rolla, Rolla, Missouri 65401
• OSTI ID: 6635141
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 23:3; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ACCELERATORS
ANGULAR DISTRIBUTION
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXPERIMENTAL DATA
FUNCTIONS
GLAUBER THEORY
HELIUM IONS
HYDROGEN
INFORMATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
KEV RANGE 10-100
NONMETALS
NUMERICAL DATA
WAVE FUNCTIONS