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
Citations
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Journal ArticleDOI
Nuclear quadrupole resonance in amorphous and crystalline As 2 S 3
Mark Rubinstein,P. C. Taylor +1 more
TL;DR: In this paper, the temperature dependence of the resonance frequencies, the asymmetry parameters, and the orientation of the principal axes of the electric field grandient with respect to the crystal axes have been obtained for crystalline and amorphous nuclear quadrupole resonances.
Journal ArticleDOI
Nuclear quadrupole resonance detected at 30 MHz with a dc superconducting quantum interference device
TL;DR: In this article, a dc superconducting quantum interference device is used as a tuned radio frequency amplifier at liquid helium temperatures to detect pulsed nuclear quadrupole resonance at ∼30 MHz.
Journal ArticleDOI
14N nuclear quadrupole resonance and relaxation measurements of sodium nitrite
G. Petersen,P. J. Bray +1 more
TL;DR: In this article, the quadrupole coupling constant, asymmetry parameter, inverse linewidth parameter T*2, spin-spin relaxation time T2, and spin-lattice relaxation times T1s and T1l are reported for sodium nitrite in the temperature region from 77-467°K.
Journal ArticleDOI
Nuclear quadrupole resonance in inorganic chemistry
Journal ArticleDOI
Transient response of a quadrupolar spin-system in zero applied field
TL;DR: In this paper, the response of a system of nuclear spins I = 3 2 experiencing electric quadrupole couplings in zero externally applied field to two pulse sequences is examined using time-dependent perturbation theory.