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The Role of a direct knock-out mechanism in the inclusive (p, α) reaction
Thesis (MSc (Physics))--University of Stellenbosch, 2008.
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| Format: | Thesis |
| Language: | English |
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Stellenbosch : University of Stellenbosch
2008
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| _version_ | 1867613764299259904 |
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| access_status_str | Open Access |
| author | Van Zyl, Johannes Jacobus |
| author2 | Hillhouse, G. C. |
| author_browse | Hillhouse, G. C. Van Zyl, Johannes Jacobus |
| author_facet | Hillhouse, G. C. Van Zyl, Johannes Jacobus |
| author_sort | Van Zyl, Johannes Jacobus |
| collection | Thesis |
| dc_rights_str_mv | University of Stellenbosch |
| description | Thesis (MSc (Physics))--University of Stellenbosch, 2008. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/1610 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:41:19.685Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| publisher | Stellenbosch : University of Stellenbosch |
| publisherStr | Stellenbosch : University of Stellenbosch |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/1610 The Role of a direct knock-out mechanism in the inclusive (p, α) reaction Van Zyl, Johannes Jacobus Hillhouse, G. C. Cowley, A. A. Van der Ventel, B. I. S. Direct knock-out DWIA Differential cross section Analysing power Nuclear reactions Dissertations -- Physics Theses -- Physics Thesis (MSc (Physics))--University of Stellenbosch, 2008. Experimental double differential cross sections and analyzing powers for the inclusive 93 Nb(p,α) r and 93 Nb(p, 3He) r reactions have been measured at an incident energy of 160 MeV. The results of this experiment, for emission angles ranging from 15º to 60º as well as previously measured data for 93 Nb(p,α) r at 100 MeV and 59Co(p,α) r at 100 and 160 MeV, have been compared with theoretical calculations based on a direct quasi-free α- cluster knockout mechanism. A computer code has been employed which calculates triple differential cross section and analysing power values using the distorted wave impulse approximation (DWIA). Inclusive double differential cross sections and analysing powers were calculated by integrating over the solid angle of the unobserved proton. It was found that the DWIA is limited in its ability to reproduce the experimental data. Some slight agreements have been observed in the region of large emission energies and small angles. This is consistent with the findings of previous studies based on a direct multi-step analysis which indicated that the first step knock-out reaction dominates in this region. 2008-05-09T12:11:12Z 2010-06-01T08:28:34Z 2008-05-09T12:11:12Z 2010-06-01T08:28:34Z 2008-03 Thesis http://hdl.handle.net/10019.1/1610 en University of Stellenbosch 3659154 bytes application/pdf application/pdf Stellenbosch : University of Stellenbosch |
| spellingShingle | Direct knock-out DWIA Differential cross section Analysing power Nuclear reactions Dissertations -- Physics Theses -- Physics Van Zyl, Johannes Jacobus The Role of a direct knock-out mechanism in the inclusive (p, α) reaction |
| title | The Role of a direct knock-out mechanism in the inclusive (p, α) reaction |
| title_full | The Role of a direct knock-out mechanism in the inclusive (p, α) reaction |
| title_fullStr | The Role of a direct knock-out mechanism in the inclusive (p, α) reaction |
| title_full_unstemmed | The Role of a direct knock-out mechanism in the inclusive (p, α) reaction |
| title_short | The Role of a direct knock-out mechanism in the inclusive (p, α) reaction |
| title_sort | role of a direct knock out mechanism in the inclusive p α reaction |
| topic | Direct knock-out DWIA Differential cross section Analysing power Nuclear reactions Dissertations -- Physics Theses -- Physics |
| url | http://hdl.handle.net/10019.1/1610 |
| work_keys_str_mv | AT vanzyljohannesjacobus theroleofadirectknockoutmechanismintheinclusivepareaction AT vanzyljohannesjacobus roleofadirectknockoutmechanismintheinclusivepareaction |