GDR Gamma-ray emission as a probe of fission dynamics /
| Main Author: | |
|---|---|
| Other Authors: | , , |
| Format: | Thesis Book |
| Language: | English |
| Published: |
1993.
|
| Subjects: | |
| Online Access: | Link to ProQuest copy Link to OAKTrust copy ProQuest, Abstract |
| Abstract: | Presented in this dissertation is a study of fission dynamics and shape evolution in rapidly rotating nuclei. This has been accomplished via measurements of [gamma]-rays in coincidence with fission fragment emission. The system selected for this investigation was the 7.5 MeV/nucleon 16O + 208pb reaction. In the measurement, the fission fragments were detected with an array of four position sensitive parallel plate avalanche counters (FPAC). They were placed symmetrically about the beam axis at the folding angles appropriate for full momentum transfer. The fission fragment emission angles and relative velocities were measured so that the fission fragment masses could be determined by kinematic reconstruction. The GDR [gamma]-rays were detected by 16 segments of the Cyclotron Institute's 18 element Total Energy Crystal NaI detector. The individual Nal elements were arranged in four detector clusters to measure the angular distribution of high energy [gamma]-rays. The measured [gamma]-ray spectra were then analyzed with the aid of statistical model calculations to extract the timescales... |
|---|---|
| Item Description: | "Major subject: Chemistry." In title, symbol for Greek letter Gamma is used. Vita. |
| Physical Description: | xii, 125 leaves : illustrations ; 28 cm |
| Bibliography: | Includes bibliographical references. |