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Negative and positive ion trapping by isotopic molecules in cryocrystals in case of solid parahydrogen containing electrons and H6^+ radical cations
http://hdl.handle.net/2237/14161
http://hdl.handle.net/2237/14161c4a5e53a-9518-4678-8a61-62bbdff10e15
名前 / ファイル | ライセンス | アクション |
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THE_JOURNAL_OF_CHEMICAL_PHYSICS_132_24_244503.pdf (337.2 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2010-09-17 | |||||
タイトル | ||||||
タイトル | Negative and positive ion trapping by isotopic molecules in cryocrystals in case of solid parahydrogen containing electrons and H6^+ radical cations | |||||
言語 | en | |||||
著者 |
Shimizu, Yuta
× Shimizu, Yuta× Inagaki, Makoto× Kumada, Takayuki× Kumagai, Jun |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | Copyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. | |||||
抄録 | ||||||
内容記述 | We performed electron spin resonance studies of trapped electrons and H6^+ radical cations produced by radiolysis of solid parahydrogen (p-H2), p-H2−ortho-D2 (o-D2), and p-H2−HD mixtures. Yields of trapped electrons, H6+ radical cations, and its isotopic analogs H6−nDn+ (4 ≥ n ≥ 1) increased with increasing o-D2 and HD concentrations in solid p-H2. Electrons were found trapped near an o-D2 or an HD in solid p-H2 due to the long-range charge-induced dipole and quadrupole interactions between electrons and isotopic hydrogen molecules. H6^+ radical cations diffuse in solid p-H2 by repetition of H6^++H2→H2+H6^+ and are trapped by ortho-D2 or HD to form H6−nDn+ (4 ≥ n ≥ 1) as isotope condensation reactions. Decay behaviors of these cations by the repetition, isotope condensation, and geminate recombination between electrons and H6−nDn+ (4 ≥ n ≥ 0) were reproduced by determining the corresponding reaction rate constants k1, k2, and k3. Values of 0.045 and 0.0015 L mol^−1 min^−1 were obtained for k1 (H6^++D2→H2+H4D2^+) and k2 (H4D2++D2→H2+H2D4^+), respectively, and the value was quasinull for k3 (H2D4^++D2→H2+D6^+). These rate constants suggest that hole mobility drastically decreased in the repetition reaction when H6+ radical cations acting as hole carriers formed H4D2^+ or H2D4^+. HD and D2 molecules, therefore, act as electron and hole acceptors in irradiated solid p-H2−o-D2 and p-H2−HD mixtures. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | American Institute of Physics | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1063/1.3432780 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0021-9606 | |||||
書誌情報 |
en : THE JOURNAL OF CHEMICAL PHYSICS 巻 132, 号 24, p. 244503-244503, 発行日 2010-06 |
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application/pdf | ||||||
著者版フラグ | ||||||
値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/14161 | |||||
識別子タイプ | HDL | |||||
URI | ||||||
識別子 | http://dx.doi.org/10.1063/1.3432780 | |||||
識別子タイプ | DOI |