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A study of Gamow-teller strength using the 208Pb(p,n) and 181Ta(p,n) reactions at intermediate energy, Ep=122 MeV
Bibliography: p. [105] - 112.
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| Format: | Thesis |
| Language: | English |
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Department of Physics
2016
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| _version_ | 1867613221525913600 |
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| access_status_str | Open Access |
| author | Tshivhase, Victor Makondelele |
| author2 | Aschman, David G |
| author_browse | Aschman, David G Tshivhase, Victor Makondelele |
| author_facet | Aschman, David G Tshivhase, Victor Makondelele |
| author_sort | Tshivhase, Victor Makondelele |
| collection | Thesis |
| description | Bibliography: p. [105] - 112. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/17971 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:41.376Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Physics |
| publisherStr | Department of Physics |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/17971 A study of Gamow-teller strength using the 208Pb(p,n) and 181Ta(p,n) reactions at intermediate energy, Ep=122 MeV Tshivhase, Victor Makondelele Aschman, David G Physics Bibliography: p. [105] - 112. The Gamow-Teller strength was measured in ²⁰⁸Pb(p,n)²⁰⁸Bi and ¹⁸¹Ta(p,n)¹⁸¹W reactions at an incident proton energy of 122 MeV. The experiment was performed using the beam-swinger facility at the National Accelerator Centre, Faure, South Africa. The time-of-flight(TOF) technique was employed with a flight-path of 100 m. Detectors comprised three stacks of four rectangular bars of NE 102A plastic scintillators. The outgoing neutrons were observed at laboratory angles, ΘLab = 0°, 2°, 4° and 10° . A multipole decomposition analysis of spectra associated with ²⁰⁸Pb(p,n)²⁰⁸Bi and ¹⁸¹Ta(p,n)¹⁸¹W reactions was performed using the results of distorted-wave impulse approximation (DWIA) calculations. The spectra associated with the two reactions were decomposed into L=0,1 and 2 transfer components. The major contribution to the spectra were found to be L=O, with a very small 1=2 multipole transfer contribution. The spectra were modelled with a combination of symmetrical Gaussians and a polynomial background. The GT strength was extracted by normalizing the cross section of the GT states to the cross section of the isobaric analogue state. The ΣB(GT) strength associated with the ²⁰⁸Pb(p,n)²⁰⁸Bi and ¹⁸¹Ta(p,n)¹⁸¹W reactions was found by summing the individual GT strength in the 0 - 23 MeV and 0 - 20 MeV excitation regions respectively. The ΣB(GT) strength associated with the ²⁰⁸Pb(p,n)²⁰⁸Bi and ¹⁸¹Ta(p,n)¹⁸¹W reactions were found to be less than the values predicted by the 3(N - Z) sum rule, being 81 ± 10% and 78 ± 3% of the sum rule strength respectively. 2016-03-17T12:46:55Z 2016-03-17T12:46:55Z 1997 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/17971 eng application/pdf Department of Physics Faculty of Science University of Cape Town |
| spellingShingle | Physics Tshivhase, Victor Makondelele A study of Gamow-teller strength using the 208Pb(p,n) and 181Ta(p,n) reactions at intermediate energy, Ep=122 MeV |
| thesis_degree_str | Doctoral |
| title | A study of Gamow-teller strength using the 208Pb(p,n) and 181Ta(p,n) reactions at intermediate energy, Ep=122 MeV |
| title_full | A study of Gamow-teller strength using the 208Pb(p,n) and 181Ta(p,n) reactions at intermediate energy, Ep=122 MeV |
| title_fullStr | A study of Gamow-teller strength using the 208Pb(p,n) and 181Ta(p,n) reactions at intermediate energy, Ep=122 MeV |
| title_full_unstemmed | A study of Gamow-teller strength using the 208Pb(p,n) and 181Ta(p,n) reactions at intermediate energy, Ep=122 MeV |
| title_short | A study of Gamow-teller strength using the 208Pb(p,n) and 181Ta(p,n) reactions at intermediate energy, Ep=122 MeV |
| title_sort | study of gamow teller strength using the 208pb p n and 181ta p n reactions at intermediate energy ep 122 mev |
| topic | Physics |
| url | http://hdl.handle.net/11427/17971 |
| work_keys_str_mv | AT tshivhasevictormakondelele astudyofgamowtellerstrengthusingthe208pbpnand181tapnreactionsatintermediateenergyep122mev AT tshivhasevictormakondelele studyofgamowtellerstrengthusingthe208pbpnand181tapnreactionsatintermediateenergyep122mev |