Hydrogen atoms in solid xenon: Trapping site structure, distribution, and stability as revealed by EPR studies in monoisotopic and isotopically enriched xenon matrices
Тип публикации: Journal Article
Дата публикации: 2008-06-05
scimago Q1
wos Q2
БС2
SJR: 0.819
CiteScore: 5.3
Impact factor: 3.1
ISSN: 00219606, 10897690
PubMed ID:
18537437
Physical and Theoretical Chemistry
General Physics and Astronomy
Краткое описание
Trapping and decay of hydrogen atoms generated by fast electron irradiation of solid xenon doped with small hydrogen-containing molecules (acetylene, water) were studied by EPR using monoisotopic (136)Xe matrix (I = 0) and highly isotopically enriched (129)Xe matrix (I = 12). It was found that more than 99% of H atoms observed by EPR are initially trapped in the octahedral interstitial trapping sites, whereas initial population of the substitutional trapping sites is very small (less than 1%). The (129)Xe hyperfine coupling tensor parameters for major trapping site were determined from direct measurements in a (136)Xe matrix doped with small amount of (129)Xe: A(0) ((129)Xe) = -92.1 MHz and B((129)Xe) = -22 MHz. Final proof for the trapping site structure was obtained from comparison between experiment and simulation for the highly enriched (129)Xe matrix. The mean interspin distance of approximately 4 nm was estimated from the EPR signal linewidth in a (136)Xe matrix, the hydrogen atom loss upon irradiation being negligible at low doses. Decay of trapped H atoms occurring at 38-45 K leads to population (or creation) of metastable traps of lower symmetry.
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Feldman V. I., Sukhov F. F., Orlov A. Yu. Hydrogen atoms in solid xenon: Trapping site structure, distribution, and stability as revealed by EPR studies in monoisotopic and isotopically enriched xenon matrices // Journal of Chemical Physics. 2008. Vol. 128. No. 21. p. 214511.
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Feldman V. I., Sukhov F. F., Orlov A. Yu. Hydrogen atoms in solid xenon: Trapping site structure, distribution, and stability as revealed by EPR studies in monoisotopic and isotopically enriched xenon matrices // Journal of Chemical Physics. 2008. Vol. 128. No. 21. p. 214511.
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TY - JOUR
DO - 10.1063/1.2933366
UR - https://pubs.aip.org/jcp/article/128/21/214511/959108/Hydrogen-atoms-in-solid-xenon-Trapping-site
TI - Hydrogen atoms in solid xenon: Trapping site structure, distribution, and stability as revealed by EPR studies in monoisotopic and isotopically enriched xenon matrices
T2 - Journal of Chemical Physics
AU - Feldman, Vladimir I
AU - Sukhov, Fedor F
AU - Orlov, Aleksei Yu
PY - 2008
DA - 2008/06/05
PB - AIP Publishing
SP - 214511
IS - 21
VL - 128
PMID - 18537437
SN - 0021-9606
SN - 1089-7690
ER -
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@article{2008_Feldman,
author = {Vladimir I Feldman and Fedor F Sukhov and Aleksei Yu Orlov},
title = {Hydrogen atoms in solid xenon: Trapping site structure, distribution, and stability as revealed by EPR studies in monoisotopic and isotopically enriched xenon matrices},
journal = {Journal of Chemical Physics},
year = {2008},
volume = {128},
publisher = {AIP Publishing},
month = {jun},
url = {https://pubs.aip.org/jcp/article/128/21/214511/959108/Hydrogen-atoms-in-solid-xenon-Trapping-site},
number = {21},
pages = {214511},
doi = {10.1063/1.2933366}
}
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Feldman, Vladimir I., et al. “Hydrogen atoms in solid xenon: Trapping site structure, distribution, and stability as revealed by EPR studies in monoisotopic and isotopically enriched xenon matrices.” Journal of Chemical Physics, vol. 128, no. 21, Jun. 2008, p. 214511. https://pubs.aip.org/jcp/article/128/21/214511/959108/Hydrogen-atoms-in-solid-xenon-Trapping-site.
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