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Electron spin resonance study on H$$_6$$$$^+$$, H$$_5$$D$$^+$$, H$$_4$$D$$_2$$$$^+$$, and H$$_2$$D$$_4$$$$^+$$ in solid parahydrogen

Kumagai, Jun*; Inagaki, Hiroki*; Kariya, Susumu*; Ushida, Takahiro*; Shimizu, Yuta*; Kumada, Takayuki   

We carried out an electron spin resonance (ESR) study on hydrogen ion radicals produced by radiolysis of solid parahydrogen. We newly observed totally more than fifty resolved lines in irradiated solid parahydrogens. We assigned these lines to be isotope substituents of H$$_2$$$$^+$$-core H$$_6$$$$^+$$ ions such as H$$_5$$D$$^+$$, H$$_4$$D$$_2$$$$^+$$, and H$$_2$$D$$_4$$$$^+$$ throughout comparison of their ESR parameters with theoretical results. These results show conclusive evidence that H$$_2$$$$^+$$-core H$$_6$$$$^+$$ ions are produced and stably trapped in irradiated solid hydrogens. We also observed a lowering symmetry on electron wave function in H$$_5$$D$$^+$$ and H$$_4$$D$$_2$$$$^+$$, and isotope-substitution reactions such as H$$_6$$$$^+$$+D$$_2$$$$rightarrow $$H$$_4$$D$$_2$$$$^+$$+H$$_2$$ and H$$_6$$$$^+$$+HD$$rightarrow $$H$$_5$$D$$^+$$+H$$_2$$.

Language

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English

Journal

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Journal of Chemical Physics

Volume

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127

Number

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2

Pages

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p.024505_1 - 024505_13

Publication Year/Month

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2007/07

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Patent information

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Paper URL

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https://doi.org/10.1063/1.2748046

DOI for research data

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Keywords

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no keyword

Research Facility

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第4研究棟  

Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

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