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Title: Measurement of gamma ray transitions in Se⁷⁶ and Ge⁷² using a dual-parameter data collection system
Author: Sulaiman, Mohamad Yusof Bin
ISNI:       0000 0001 3489 2658
Awarding Body: University of London
Current Institution: Royal Holloway, University of London
Date of Award: 1977
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The states populated in the beta decay of As76 and Ga 72 were investigated by measuring the gamma-ray transitions in Se 76 and Ge72 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 76 and the dual-parameter system was used in coincidence work on Ga 72 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.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Nuclear Physics And Radiation