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Cluster model analysis of exotic decay in actinide nuclei
Thesis (MSc)--Stellenbosch University, 2014.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2015
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| _version_ | 1867613944015749120 |
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| access_status_str | Open Access |
| author | Du Toit, Erasmus Johannes |
| author2 | Wyngaardt, Shaun M. |
| author_browse | Du Toit, Erasmus Johannes Wyngaardt, Shaun M. |
| author_facet | Wyngaardt, Shaun M. Du Toit, Erasmus Johannes |
| author_sort | Du Toit, Erasmus Johannes |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MSc)--Stellenbosch University, 2014. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/95812 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:44:10.803Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/95812 Cluster model analysis of exotic decay in actinide nuclei Du Toit, Erasmus Johannes Wyngaardt, Shaun M. Perez, Sandro M. Stellenbosch University. Faculty of Science. Dept. of Physics. Nuclear clustering Liquid drop model Nuclear structure Exotic cuclei Alpha particle Cluster theory (Nuclear physics) Dissertations -- Physics Theses -- Physics UCTD Thesis (MSc)--Stellenbosch University, 2014. ENGLISH ABSTRACT: The binary cluster model is used to investigate the properties of exotic structures and decays in various nuclei. A simple method is described to choose the possible clusters forming within the nucleus, by assuming the nucleus consists of a mixture of up to four different core-cluster pairs. A phenomenological potential is then used, with optimized parameters, to describe the even-even 222-232Th nuclei within the binary cluster model, by calculating exotic decay half-lives, reduced electromagnetic transition probabilities, and energy spectra. After finding that all experimentally observed heavy ion emissions are predicted with the model and calculated structure observables are reproduced within good agreement of the experimentally measured values, the model was extended to include the even-even 230-234U, 236-240Pu and 222-224Ra nuclei. We found that almost all experimentally observed heavy ion emissions are predicted within the model with reasonable accuracy in the calculated halflives, and found good agreement in the other calculated structure observables. AFRIKAANSE OPSOMMING: Die binêre bondel model is gebruik om die eienskappe van eksotiese strukture en verval in verskeie nukliedes te ondersoek. ’n Eenvoudige metode is gebruik om die moontlike bondels wat binne die nuklied vorm te kies, deur die aanname te maak dat die nuklied uit ’n mengsel van tot vier verskillende kern-bondel pare bestaan. ’n Fenomenologiese potensiaal is dan gebruik, met optimale parameters, om die ewe-ewe 222-232Th nukliedes met die binêre bondel model te beskryf, deur eksotiese verval halfleeftye, verminderde elektromagnetiese oorgangswaarskynlikhede, en energie spektra te bereken. Nadat daar gevind is dat alle vrygestelde swaar ione wat eksperimenteel waargeneem is deur die model voorspel word, en berekende struktuur waarneembares tot goeie ooreenstemming met die eksperimentele waardes produseer is, is die model uitgebrei om die ewe-ewe 230-234U, 236-240Pu en 222-224Ra nukliedes in te sluit. Daar is gevind dat byna alle vrygestelde swaar ione wat eksperimenteel waargeneem is deur die model voorspel word met redelike akkuraathied in die berekening van hul halfleeftye, asook dat daar goeie ooreenstemming tussen die berekende en eksperimentele waardes van ander struktuur waarneembares was. 2015-01-13T11:47:19Z 2015-01-13T11:47:19Z 2014-12 Thesis http://hdl.handle.net/10019.1/95812 en_ZA Stellenbosch University xii, 107 p. application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Nuclear clustering Liquid drop model Nuclear structure Exotic cuclei Alpha particle Cluster theory (Nuclear physics) Dissertations -- Physics Theses -- Physics UCTD Du Toit, Erasmus Johannes Cluster model analysis of exotic decay in actinide nuclei |
| title | Cluster model analysis of exotic decay in actinide nuclei |
| title_full | Cluster model analysis of exotic decay in actinide nuclei |
| title_fullStr | Cluster model analysis of exotic decay in actinide nuclei |
| title_full_unstemmed | Cluster model analysis of exotic decay in actinide nuclei |
| title_short | Cluster model analysis of exotic decay in actinide nuclei |
| title_sort | cluster model analysis of exotic decay in actinide nuclei |
| topic | Nuclear clustering Liquid drop model Nuclear structure Exotic cuclei Alpha particle Cluster theory (Nuclear physics) Dissertations -- Physics Theses -- Physics UCTD |
| url | http://hdl.handle.net/10019.1/95812 |
| work_keys_str_mv | AT dutoiterasmusjohannes clustermodelanalysisofexoticdecayinactinidenuclei |