The Decay of Ta¹⁸³

Citation

Murray, Joseph Jackson (1954) The Decay of Ta¹⁸³. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/ZGBJ-MY29. https://resolver.caltech.edu/CaltechETD:etd-01262004-140923

Abstract

NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. The [...] decay of Ta183 into an excited state of W183 has been observed using the curved crystal gamma-ray diffraction spectrometer and the axial focusing homogeneous field beta spectrometer. A unique decay scheme is presented for this mode of excitation of W183 constructed on the basis of the energies and conversion properties of twenty-seven gamma transitions with spin and parity assigned to each level. The principal features of the scheme are no parity change throughout, frequent violation of single particle selection rules, and several examples of competition between E2 and M1 transitions. These results provide amplification of and correction. to preliminary results reported earlier (Dumond, Hoyt, Marmier and Murray, Phys. Rev. 92, 202 (1953)). In addition to the primary results above, there will also be found a comparison of the experimental and theoretical K and L conversion coefficients for E2 and M1 transitions in the energy range from 40 to 350 kev and experimental M and N conversion coefficients for a few low energy E2 and M1 transitions. There is presented a review of the techniques employed and of important parts of the analysis of the experimental data especially with regard to corrections applied to observed intensities of gamma and conversion lines. A brief discussion offers a suggestion for possible interpretation of certain aspects of the results in terms of current ideas about, nuclear structure.

Thesis Files