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The determination of the HHe potential well depth from low energy elestic scattering

✍ Scribed by J.P. Toennies; W. Welz; G. Wolf

Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
295 KB
Volume
44
Category
Article
ISSN
0009-2614

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✦ Synopsis

Rcccivcd 5 Augu\t 1976 Rchtivc intcgrai chtic crow sectmns for H-He and D-Hc have been mca~urtxl at low collision energies. 0.6 mcV G Ecm G 26 meV. in both systems nn atomic Rnmmuer-Townsend cffcct W.IS observed, whicll allowed J precise dctcrmmation of the potcntinl wcii depth c. Tile H-He data c.m bc intcrprctcd equally well by two different potcntiais. This ambgulty is rc\oived by the ~dditionai mformation obtained from rhe muasured D-He cross sections. TIE resulting well depth of E = 0.46 mcV, at R,,, = 3.72 A, ig cvcn smdilcr thm that of the H-H (3XL) and He-Hc systems and appears to bu the \m,llicst v.111 dcr W~is mimmum of ail neutral atom -atom partucrc.

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