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Measurements of absolute integral total cross sections of He—H2 and the interaction potential

✍ Scribed by R. Gengenbach; Ch. Hahn

Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
321 KB
Volume
15
Category
Article
ISSN
0009-2614

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✦ Synopsis

The integral total collision cross section for tie H 2 has been measured with an absolute accuracy of -+ 1% to -+4% between 0.14 meV and 2.9 eV. The data have been fitted by a spherical symmetric multiparameter Morse-splinedispersion potential, which agrees well with results of ab initio calculations at short distances. The long range attraction can be described by the theoretical van der Waals constant C 6, if the dipole-quadrupole interaction -Cs R -a with C 8 = 41 au is taken into account. The potential has one bound state for every possible isotopic combination.

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