Abstract
Spin-echo and free induction decay (FID) detected electron paramagnetic resonance were applied to detect free D atoms in the pulse radiolysis of CD{sub 1} in liquid argon, krypton, xenon, and nitrogen at 77-160 K. The D atoms were polarized through chemically induced dynamic electron polarization in random encounters. The decay of polarization was essentially independent of the fraction of methane (1-70 mol%) and the temperature of the liquid solution. Analysis of the polarization decay kinetics and the D atoms yield suggests that ion reactions dominate over energy transfer reactions in these mixtures (except for xenon solutions). In solid CD{sub 4}-Ar mixtures a satellite resonance line of unusually polarized D atoms was observed. This indicates microheterogeneous nature of these solid mixtures and explains anomalous chemistry observed in the media. 38 refs., 8 figs., 1 tab.
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