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Experimental observation of H2− anions by high-resolution ESR spectroscopy in γ-ray irradiated quantum solid parahydrogen at 4.2 K

✍ Scribed by Takayuki Kumada; Hirohisa Inagaki; Takao Nagasawa; Yasuyuki Aratono; Tetsuo Miyazaki

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 269 KB
Volume: 251
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(96)00088-7

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✦ Synopsis

High-resolution ESR spectroscopy by use of quantum solid parahydrogen has been applied to the observation of H 2 anions. When solid parahydrogen is irradiated with ~/-rays at 4.2 K, H~-anions produced show ESR spectra of quartet lines with a hyperfine splitting constant of 203 G. H~-anions consist of the mixture of P-Hi (25%) and o-H~-(75%) i though the concentration of p-H 2 in the matrix exceeds 95%. It is suggested that electron bubbles assumed previously i~ irradiated solid hydrogen are probably the HE anions observed here.

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✍ Tetsuo Miyazaki; Kenji Yamamoto; Yasuyuki Aratono 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 204 KB

A new reactive species in "/-irradiated solid P-H2 has been studied by ESR. When P-H2 is irradiated at 4.2 K with 7-rays, a small amount of the new reactive species which shows doublet ESR lines with a separation of 12.4 G is observed in addition to intense peaks of H atoms. The yield of the new spe