Relative orientation dynamics of stabilized CH3 radicals and matrix CH4 molecules in solid methane in 1.4-35 K temperature region
Dmitriev Yu. A. 1
1Ioffe Institute, St. Petersburg, Russia
Email: dmitriev.mares@mail.ioffe.ru
Results are presented on CH3 radical stabilization in solid CH4 matrix from the gas phase and their study by EPR. In the first series of experiments, the samples are obtained by deposition on a substrate at Tdep= 4.2 K and studied in temperature range Trec = 1.4-4.2 K. In the second series of the experiments, the relevant temperatures are: Tdep=15-17 K, Tdep=15-17 K. The relative intensity of the forbidden electron-proton transitions is measured versus microwave power and the sample temperature. The experimental result analysis testify to existence of two temperature regions with different degrees of correlation between the radical and matrix molecules orientation motion. Keywords: electron paramagnetic resonance, matrix isolation, methyl radical, solid methane, molecular rotation.
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