Results of total collision cross section measurements with crientationally selected molecules are prcwntcd, for the systcms Hz--Hz, He, Ne, AK. Kr sod Xe. Anisotropy pnramcters for CI Lennard-Jones Orz,G) type poicnthl l-cc +en.
Measurements of the mJ-dependent collision cross section of H2 molecules with various gases
β Scribed by H.C.H.A. Moerkerken; A.P.L.M. Zandee; J. Reuss
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 174 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Relative total cross sections were measured for the systems HZ-Xe, Kr, As and CO2 with velocities between 1200 and 1850 m/set. The Hz molecules were selected in the states (I,J. ml, rn/) = (1, 1, 1,CJ) and (I, 1, 1, I). The ratio of the CIOSS sections for the two states is a measure fox the angular dependent part of the intermolecular poten-tia1. NG satisfying fit of potential pxameters has been found so far.
π SIMILAR VOLUMES
Analytic expressions fitted to cross section data on collisions of H + , H + 2 , H + 3 , H, H 2 , and H -with H 2 are given. The data used are those recommended by Phelps [J. Chem. Phys. Ref. Data 19, 653 (1990)] and additional experimental data, when available, up to a projectile energy of about 10
The quenching cross sections for collision of Cd( 53P, ) with H, or D2 arc measured in the range 430 < T< 900 K. They show a threshold behaviour, increasing by one order of magnitude in the studied temperature range, and a marked isotopic effect, being about two times greater for Hz than for DZ.
The quenching cross-sections for collision of Hg( 6 'PI ) with HZ or D2 are measured in the temperature range 300 < T< 700 K. They show a minimum at Tz400 K, suggesting the occurrence of two processes, which may be interpreted using calculated HgH, potential energy curves. These processes depend on