Surface Temperature Dependence of Hydrogen Ortho-Para Conversion on Amorphous Solid Water

Ueta, Hirokazu; Watanabe, Naoki; Hama, Tetsuya et al.

Physical Review Letters, 2016, 116(25), 253201

Permalink : https://hdl.handle.net/2115/62697

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ファイル	フォーマット	サイズ	閲覧回数	説明
PhysRevLett.116.253201(1)	pdf	295 KB	1,127
Supplemental_Material_correction	pdf	515 KB	571

アクセス権	open access
URI	https://hdl.handle.net/2115/62697
タイトル	Surface Temperature Dependence of Hydrogen Ortho-Para Conversion on Amorphous Solid Water
著者	Ueta, Hirokazu ; Watanabe, Naoki ; Hama, Tetsuya ; Kouchi, Akira
著者名 Ueta, Hirokazu
e-Rad_Researcher 50271531 著者名 Watanabe, Naoki
著者名 Hama, Tetsuya
著者名 Kouchi, Akira
言語	英語
発行日	2016-06-23
出版者	American Physical Society (APS)
収録物名	Physical Review Letters
巻(号)	116(25)
ページ	253201
抄録	The surface temperature dependence of the ortho-to-para conversion of H-2 on amorphous solid water is first reported. A combination of photostimulated desorption and resonance-enhanced multiphoton ionization techniques allowed us to sensitively probe the conversion on the surface of amorphous solid water at temperatures of 9.2-16 K. Within a narrow temperature window of 8 K, the conversion time steeply varied from similar to 4.1 x 10(3) to similar to 6.4 x 10(2) s. The observed temperature dependence is discussed in the context of previously suggested models and the energy dissipation process. The two-phonon process most likely dominates the conversion rate at low temperatures.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	©2016 American Physical Society
PISSN	0031-9007
関連情報	PMID 27391719
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1103/PhysRevLett.116.253201