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in irradiated solid 
-hydrogen and its decay dynamics; Reinvestigation of quartet electron paramagnetic resonance lines assigned to H
Kumada, Takayuki; Tachikawa, Hiroto*; Takayanagi, Toshiyuki*
Physical Chemistry Chemical Physics, 7(5), p.776 - 784, 2005/02
Times Cited Count：12 Percentile：38.26(Chemistry, Physical)The quartet ESR lines observed in X-ray irradiated solid parahydrogen, which have previously been assigned to H, are reinvestigated. We have reassigned the quartet lines to H rather than H. Based on the new assignment, previous data have been reinterpreted as follows. The H ion is composed of the collinearly aligned H core at the center and two H rotors at both ends. The ortho-para conversion of H core of H is completed within the time-scale of hours. H diffuses quantum mechanically by the repetition of H + H 
H + H reaction, and the diffusion terminates by the reaction with a HD impurity as H + HD H
D + H. Finally, we will propose a possible reason why H is produced instead of H
in the irradiated solid H.
Kumada, Takayuki
Physical Review B, 68(5), p.052301_1 - 052301_4, 2003/08
Times Cited Count：39 Percentile：81.93(Materials Science, Multidisciplinary)Effect of pressure on the recombination of H atoms produced by UV-photolysis of O-doped solid H was studied using ESR spectroscopy. The recombination rate constant was independent of pressure up to 13 MPa below 4.2 K, whereas it remarkably decreases with the increase in pressure above. The absence of pressure effect indicates that the H atoms do not diffuse by the physical exchange of positions with neighboring H molecules, but by the tunneling reaction H + H H + H.
Miyazaki, Tetsuro*; Aratono, Yasuyuki; *; *
JAERI-Conf 98-014, 99 Pages, 1998/10
no abstracts in English
V.Shevtsov*;
Chemical Physics Letters, 244, p.188 - 194, 1995/09
Times Cited Count：3 Percentile：14.13(Chemistry, Physical)no abstracts in English
