Nuclear Electric-Quadrupole Radiative Transitions as an Explanation of InSb Microwave Emission

1 May 1972

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 28 (18) , 1166-1169
https://doi.org/10.1103/physrevlett.28.1166

Abstract

InSb samples at 4 K and

B_{ext} = 0

are observed to emit narrow-band radiation in two bands near 400 and 600 MHz. The frequency ratio of the two bands strongly suggests that the emission is due to nuclear electric-quadrupole transitions

\frac{3}{2} \to \frac{1}{2}

{Sb}^{121}

and

{Sb}^{123}

nuclei located near impurity atoms. The nuclear electric quadrupole hypothesis explains simply many of the previously puzzling aspects of Insb microwave emission.

Keywords

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