Observation of Nuclear Relaxation of Nitrogen NQR Lines by Pulse Method
- 1 October 1974
- journal article
- research article
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 37 (4) , 1061-1068
- https://doi.org/10.1143/jpsj.37.1061
Abstract
The relaxation equation of the nondegenerate nitrogen NQR lines which describes the case of the double 90° pulse method was derived from the rate equations. It showed that the spin-lattice relaxation of the resonance lines was characterized by two longitudinal relaxation times, T 1 s and T 1 l . From the same bases, the Alexander's repeating 90° pulse method was examined and was found that the term corresponding to T 1 s was smaller than in the former case. This difference between two pulse methods was verified with the NQR lines of N 14 in ethylenediamine. The temperature dependence of the relaxation time was also studied. It suggested that a molecular motion became active around 180 K.Keywords
This publication has 14 references indexed in Scilit:
- Nuclear Relaxation in NQR of HydrazineJournal of the Physics Society Japan, 1972
- Quadrupole Resonance Study of Molecular Motion in Solid HydrazineThe Journal of Chemical Physics, 1968
- Nuclear Quadrupole Relaxation of Nitrogen in HydrazineJournal of the Physics Society Japan, 1967
- Relaxation by Slow Motional Processes. Effect of Molecular Rotations in Pure Quadrupole ResonancePhysical Review B, 1965
- Pulsed Nuclear Resonance ApparatusReview of Scientific Instruments, 1964
- Nuclear Quadrupole Resonance of N14 in EthylenediamineJournal of the Physics Society Japan, 1963
- rf Gate with 109 Carrier SuppressionReview of Scientific Instruments, 1961
- Transient Nuclear Induction and Double Nuclear Resonance in SolidsPhysical Review B, 1956
- Effects of Diffusion on Free Precession in Nuclear Magnetic Resonance ExperimentsPhysical Review B, 1954
- Spin EchoesPhysical Review B, 1950