Temperature dependence of spin relaxation time in pure water

Abstract

The temperature dependence of spin-lattice relaxation time and the transverse relaxation time in pure water were investigated by the pulse nuclear magnetic resonance method in the temperature range 4 - 100°C. The spin-lattice relaxation time, T, was shown, a low temperature region, to agree with that obtained by Krynicki, However, at high temperature region it substantially deviated from Krynicki’s result. Thus the Arrhenius behavior was not found. The magnitude of Tl was only of the order of a few seconds. At 30° C, it was 3.5 sec. and at 100°C 7.2 sec. The estimated error at each temperature was ± 10%. The transverse relaxation time was shown to be slightly temperature dependent. The order of magnitude was only 10² msec. It was 119 msec. at 32° C and 156 msec. at 100° C. The estimated error at each temperature was ± 20%.