Peculiarities of EPR spectra of methyl radicals in quench-condensed krypton films

Methyl radicals are trapped in the solid Kr film by simultaneous condensation of gaseous Kr and the
 products of the gas discharge in CH₄ doped Kr on the low temperature (4.2 K) substrate located at the center
 of the microwave cavity. The observed EPR spectrum is a superposition o...

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Published in:Физика низких температур
Date:2008
Main Author: Dmitriev, Yu.A.
Format: Article
Language:English
Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2008
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Online Access:https://nasplib.isofts.kiev.ua/handle/123456789/116775
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:Peculiarities of EPR spectra of methyl radicals in quench-condensed krypton films / Yu.A. Dmitriev // Физика низких температур. — 2008. — Т. 34, № 1. — С. 95-98. — Бібліогр.: 11 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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Summary:Methyl radicals are trapped in the solid Kr film by simultaneous condensation of gaseous Kr and the
 products of the gas discharge in CH₄ doped Kr on the low temperature (4.2 K) substrate located at the center
 of the microwave cavity. The observed EPR spectrum is a superposition of broad-line and narrow-line series.
 At a low resonance microwave power, the latter one consists of four hyperfine components with nearly equal
 intensities, and shows small axial anisotropy of both g- and A-tensors. At a sufficiently large power, two central
 narrow lines split so that the narrow-line series takes an appearance recorded elsewhere for CH₃ in Ar at
 higher temperatures above 12 K. Simultaneously, the intensity of two central broad lines increases dramatically
 while the outer components become saturated. The possible explanation is discussed.
ISSN:0132-6414