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Measurements of the cross section for penning ionization of H by He 23S metastables

✍ Scribed by M.J. Shaw; R.C. Bolden; R.S. Hemsworth; N.D. Twiddy

Publisher: Elsevier Science
Year: 1971
Tongue: English
Weight: 439 KB
Volume: 8
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(71)80601-2

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✦ Synopsis

A flowing &e&low apparatus has been used to measure the cross section for Penning ionization of hvdrogen atoms by helium ZZ3S metastable atoms at thermal energy. The result was found to be 22 I 6'~ lo-l6 cm2 at 300°K, and protons were identified as the major ion product. A novel method employing argon ions was used to obtain hydrogen atom concentrations.

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