Low energy total cross sections for the argon--krypton system
Total scattering cross sections have been measured for the argon-krypton system in the low relative velocity range of 3 to 7 (x 10/sup 4/) cm/sec. A well-collimated supersonic molecular beam was passed through a target cell containing the scattering gas. The attenuation was measured with an ionization detector. A volumetric flow calibration method was used to obtain accurate pressures in the target cell. Both Ar and Kr were used as target gases. Agreement was obtained between the absolute cross sections upon inversion of beam/target at the same relative velocities to within 7 percent. These data overlap the measurements of previous workers at the higher velocities, and are in good agreement with those results. Several glory extrema were observed which, with those previously reported, were used to determine the product eta sigma for the argon-krypton interaction potential. Theoretical calculations of total cross sections using the WKB approximation were made for several interatomic potentials satisfying the eta sigma criterion. The results are compared to the experimental data.
- Research Organization:
- Monsanto Research Corp., Miamisburg, OH (USA)
- Sponsoring Organization:
- US Atomic Energy Commission (AEC)
- DOE Contract Number:
- E(33-1)-GEN-53
- OSTI ID:
- 7245214
- Report Number(s):
- MLM-2348(OP); CONF-760710-4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
ATOMIC BEAMS
BEAMS
COLLIDING BEAMS
COLLISIONS
CROSS SECTIONS
ELASTIC SCATTERING
ELEMENTS
FLUID FLOW
KRYPTON
NONMETALS
RARE GASES
SCATTERING
SUPERSONIC FLOW
TOTAL CROSS SECTIONS