The states populated in the beta decay of As<sup>76</sup> and Ga<sup> 72</sup> were investigated by measuring the gamma-ray transitions in Se<sup> 76</sup> and Ge<sup>72</sup> using 25cc., 33cc. and 60cc. true-coaxial Gs(Li) detectors. A dual-parameter data collection system was constructed to study gamma-gamma coincidence. Options were provided to enable corrections of the undesired contributions from Compton background and chance coincidences. Its performance was shown to be very reliable and effective. Coincidence experiments were performed with the 25cc. and 33cc. Ge(Li) detectors using the conventional fast-slow system in the case of As<sup> 76</sup> and the dual-parameter system was used in coincidence work on Ga<sup> 72</sup> employing the 33cc. and 60cc. detectors. The energies and intensities of measured gamma-rays were determined. The level schemes were constructed and the log ft and parity were deduced. The collective aspects of certain states were discussed and some comparisons with the pure vibrational and two other collective models were attempted.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:474192 |
| Date | January 1977 |
| Creators | Sulaiman, Mohamad Yusof Bin |
| Publisher | Royal Holloway, University of London |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | http://repository.royalholloway.ac.uk/items/7c488696-9ddd-4d80-94c9-01b8621dbfaf/1/ |
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