TY  - SER
AU  - Lavrov,E.V.
AU  - Melnikov,Vladlen V.
AU  - Abrosimov,N.V.
TI  - Interstitial H2 in 29Si
KW  - орто-пара-превращение
KW  - водород
KW  - кремний
KW  - метод комбинационного рассеяния света
KW  - статьи в журналах
N1  - Библиогр.: 39 назв
N2  - The ortho-para conversion of interstitial H2 in single-crystalline natural Si (natSi) and 29Si (enrichment 96.2%) is studied by Raman scattering. The conversion process was found to be practically independent of the isotope composition of Si. The characteristic ortho-to-para conversion time at 77 K was found to be 220 ± 35 and 200 ± 35 h for 29Si and natSi, respectively, whereas at room temperature the back conversion occurs with a characteristic time of 8.8 ± 1.5 and 10.5 ± 1.5 h for 29Si and natSi, respectively. These values agree very well with the transition rates found in previous IR absorption studies by Peng et al. for natSi [Phys. Rev. B 80, 125207 (2009)]. Our findings imply that an interaction of H2 with the nuclear spin of nearby 29Si has marginal, if any, effects on the ortho-para conversion rate of molecular hydrogen in silicon
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000897738
ER  -