Journal ArticleDOI
Free Magnetic Induction in Nuclear Quadrupole Resonance
M. Bloom,E. L. Hahn,B. Herzog +2 more
TLDR
In this paper, the free precession of an ensemble of nuclear quadrupole moments in an axial electric field gradient is studied by the pulsed nuclear induction method, which is analogous to the macroscopic nuclear induction equations of Bloch.Abstract:
The free precession of an ensemble of nuclear quadrupole moments in an axial electric field gradient is studied by the pulsed nuclear induction method. A quantum-mechanical analysis describes the free precession and spin echo signals which result from the application of single and double pulses of radio-frequency field at the condition of zero-field quadrupole resonance. Beat modulation effects exhibited by free precession signals in a small constant external magnetic field are predicted by analysis. An alternative semiclassical description of quadrupole precession is given, which is analogous to the macroscopic nuclear induction equations of Bloch. Theory is verified by observation of free precession signals of chlorine in NaCl${\mathrm{O}}_{3}$.read more
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Journal ArticleDOI
Proton resonance for oscillating field of the order of static magnetic field
TL;DR: To the authors' knowledge this is the first time the NMR proton frequency dependence on linear polarized excitation field intensity for H(2)/H(o) as high as 1.8 is measured.
Journal ArticleDOI
Effect of intermolecular interactions on the spin-spin relaxation time in molecular crystals
Journal ArticleDOI
On spin-lattice relaxation of nuclear quadrupole resonance in polycrystalline solids
Yuta Hibe,Kazuyuki Takeda +1 more
TL;DR: In this article , the analysis of spin-lattice relaxation in nuclear quadrupole resonance (NQR) of spin 5 2 reported by Okubo and Igarashi (Z. A. Naturforsch. 56 (2001) 777) is extended to take account of the distribution of the initial nonequilibrium populations created by a resonant radio-frequency pulse in powder.
Journal ArticleDOI
Formalism of rotating-wave approximation in high-spin system with quadrupole interaction
Wenwan Ding,Xiao Guang Wang +1 more
TL;DR: In this article, the authors investigated the rotating wave approximation applied in the high-spin quantum system driven by a linearly polarized alternating magnetic field in the presence of quadrupole interactions.
Reference EntryDOI
Hahn, Erwin L.: Pulsed NMR—A Personal History
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