Absolute differential cross sections for very-small-angle elastic scattering in He+He collisions at keV energies

Journal Article · Mon Jun 01 00:00:00 EDT 1987 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.35.4541· OSTI ID:6783303

Nitz, D E; Gao, R S; Johnson, L K; Smith, K A; Stebbings, R F

Absolute differential cross sections for He+He elastic scattering at laboratory angles in the range 0.018/sup 0/--0.5/sup 0/ have been measured for projectile energies of 0.5, 1.5, and 5.0 keV. The experiment employs a position-sensitive detector for determining the angular distribution of scattered particles. The differential cross sections exhibit a transition from classical to quantum behavior within the range of angles studied, and excellent agreement is observed with partial-wave-theory calculations using phase shifts derived from the He-He interaction potentials of Ceperley and Partridge (J. Chem. Phys. 84, 820 (1986)) and Foreman, Rol, and Coffin (J. Chem. Phys. 61, 1658 (1974)).

• Research Organization: Space Physics and Astronomy Department and the Rice Quantum Institute, Rice University, Houston, Texas 77251
• OSTI ID: 6783303
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 35:11; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
COLLISIONS
COMPARATIVE EVALUATIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELEMENTS
ENERGY RANGE
EV RANGE
EV RANGE 100-1000
EXPERIMENTAL DATA
FLUIDS
GASES
HELIUM
INFORMATION
KEV RANGE
KEV RANGE 01-10
NONMETALS
NUMERICAL DATA
PARTIAL WAVES
QUANTIZATION
RARE GASES
SCATTERING
SMALL ANGLE SCATTERING