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The glycine radical NH3 +CHCOO− was produced by X-ray irradiation and identified by EPR method. Electron spin echo measurements at X-band of the phase memory time TM in temperature range 4.2-300 K show that phase relaxation is different on different hyperfine splitting levels. TM reaches maximal value of 6 μs at helium temperature and two minima in TM(T) dependence are observed at 20 K and 170 K suggesting an existence of two different motions of glycine molecule and NH3 group.
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