Low Temperature Physics: 29, 740 (2003); https://doi.org/10.1063/1.1614182 (4 pages)
Физика Низких Температур: Том 29, Выпуск 9-10 (Сентябрь 2003), c. 985-988    ( к оглавлению , назад )

A study on diffusion of H atoms in solid parahydrogen

Mizuho Fushitani* and Takamasa Momose

Division of Chemistry, Graduate School of Science, Kyoto University,Kyoto 606-8502, Japan
E-mail: momose@kuchem.kyoto-u.ac.jp


Diffusion of hydrogen atoms in solid parahydrogen was investigated using high-resolution infrared spectroscopy. Hydrogen atoms were produced as by-products of a photoinduced reaction of nitric oxides embedded in solid parahydrogen. The diffusion of the hydrogen atoms is mainly terminated by the reaction of H + NO → HNO. The diffusion rate determined from the increase of the intensity of rotation-vibration transitions of HNO molecules was found to be two orders of magnitude larger than that determined by the self-recombination reaction of H + H → H2 in pure parahydrogen crystals.

33.20.Ea - Infrared spectra
67.80.Mg - Defects, impurities, and diffusion
82.30.Cf - Atom and radical reactions; chain reactions; molecule-molecule reactions