Velocity-dependent total scattering cross sections for metastable helium on Kr and Xe

Journal Article · Thu Nov 01 04:00:00 EST 1984 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.30.2761· OSTI ID:6149006

Hardy, K A; Sheldon, J W

Single-beam attenuation measurements of velocity-dependent total scattering cross sections for the interactions of metastable helium (He() on Kr and Xe targets have been measured in the 1-- 5-km/a relative-velocity range. The results are compared with cross sections obtained by full quantum calculations for a Lennard-Jones (12-6) potential with the parameters epsilon and sigma adjusted for a best fit. The results (in atomic units) are epsilon = 3.38 x 10/sup -4/ a.u., sigma = 7.80 a.u., for the He(+Kr system and epsilon = 5.34 x 10/sup -4/ a.u. and sigma = 7.79 a.u. for the He(+Xe system.

• Research Organization: Department of Physical Sciences, Florida International University, Miami, Florida 33199
• OSTI ID: 6149006
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 30:5; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
ATOMIC BEAMS
BEAMS
COLLISIONS
CROSS SECTIONS
ELASTIC SCATTERING
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FLUIDS
GASES
HELIUM
KRYPTON
METASTABLE STATES
NONMETALS
RARE GASES
SCATTERING
TOTAL CROSS SECTIONS
XENON