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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Some studies in Beta-Gamma and Gamma-Gamma-Angular correlation

Darby, Edsel Kenneth January 1952 (has links)
The beta-gamma angular correlation for Sb¹²⁴ has been measured as a function of the beta particle energy in the range from 0.82 Mev to the end of the beta particle spectrum (2.4 Mev). As a beta particle spectrometer, use was made of a twelve channel kicksorter and a thick crystal beta particle scintillation counter. This was connected in coincidence with a gamma ray scintillation counter. Accordingly, the beta gamma coincidence counting rate W(θ,E), as a function of the angle θ between the counters, and the energy E of the beta particles, was observed. The differential angular correlation coefficient: a(E)=[formula omitted] was found to vary smoothly from -0.17 at 1.0 Mev to -0.44 at the end of the beta particle spectrum. When a(E) is integrated, numerically, over all beta particle energies greater than 0.82 Mev., the value of the integrated angular correlation coefficient a = -0.24 ± 0.02 was found. Direct measurements of the value of the integrated angular correlation coefficient were also performed, and the relation to the above value of a considered. An attempt has been made to interpret these results in terms of the angular momenta of the particles emitted, using the theory developed by Falkoff and Uhlenbeck. Experiments on the gamma-gamma angular correlation of Co⁶⁰ and Sc⁴⁶ performed with the same apparatus are in agreement with the previous results of other workers. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

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