Nuclear Orientation Studies of the Decays ofand
- 1 April 1973
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 7 (4), 1555-1563
- https://doi.org/10.1103/physrevc.7.1555
Abstract
Angular distributions have been measured for rays emitted following the decays of and nuclei polarized at low temperatures in iron. The decay of polarized spin-½ nuclear levels was found to show isotropic angular distributions to three parts in , in keeping with angular momentum theory, and purity of the accepted nuclear spin values. The magnitudes of the magnetic moments of the and ground states have been deduced to be and , respectively, assuming saturation of the hyperfine field at the nucleus; the magnitude of the magnetic moment of the 171-keV level has been similarly deduced to be , based in part on the observation that the nuclear spin-lattice relaxation time associated with decays from that level is less than 0.1 sec. multipole mixing ratios have been deduced for a number of and rays, and the multipole characters of several of the radiations emitted by and have been obtained; these multipolarities are discussed in terms of the nuclear structure. The use of polarized as an absolute -ray anisotropy thermometer is discussed.
Keywords
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