Free Magnetic Induction in Nuclear Quadrupole Resonance

M. Bloom, E. L. Hahn, and B. Herzog
Phys. Rev. 97, 1699 – Published 15 March 1955
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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 NaClO3.

  • Received 14 December 1954

DOI:https://doi.org/10.1103/PhysRev.97.1699

©1955 American Physical Society

Authors & Affiliations

M. Bloom*

  • Physics Department, University of Illinois, Urbana, Illinois

E. L. Hahn and B. Herzog

  • Watson Scientific Laboratory, Columbia University, New York, New York

  • *Present address: Kammerlingh Onnes Laboratory, University of Leiden, Leiden, The Netherlands.

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Vol. 97, Iss. 6 — March 1955

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