The (p, n) charge-exchange reaction on ⁹⁰Zr at intermediate energies

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dc.contributor.advisorAschman, David Gen_ZA
dc.contributor.authorKabutz, Rudolf Ten_ZA
dc.date.accessioned2016-02-29T12:08:18Z
dc.date.available2016-02-29T12:08:18Z
dc.date.issued1992en_ZA
dc.descriptionBibliography: p. 67-69.en_ZA
dc.description.abstractUsing the Time-of-Flight facility at the National Accelerator Centre at Faure, the (p, n) charge-exchange reaction has been studied at intermediate energies of 120, 160 and 200 MeV, and at angles of 0°, 2° and 4°. In this work the data collected for the ⁹⁰Zr target will be presented. The influence on the data from slow neutrons due to previous pulses is discussed and the best manner of removing them from the spectra is recommended. It is shown how the background cosmic rays can be utilised to measure the intrinsic resolution of the detectors and to obtain an estimate of the neutron energy threshold. The differential cross-sections for the states corresponding to Fermi and Gamow-Teller transitions were extracted from the time spectra. The sum of the strength of all the discrete Gamow-Teller states was determined and compared to the Ikeda Sum Rule. It was found that only 50% of the sum could be accounted for in the discrete states. An overview of the theory that has been developed to extract Gamow-Teller strengths from the (p, n) cross-sections is given. Some of the theoretical models that have been used to describe the ⁹⁰Zr(p, n)⁹⁰ Nb reaction and account for the missing Gamow-Teller strength are briefly discussed.en_ZA
dc.identifier.apacitationKabutz, R. T. (1992). <i>The (p, n) charge-exchange reaction on ⁹⁰Zr at intermediate energies</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Physics. Retrieved from http://hdl.handle.net/11427/17385en_ZA
dc.identifier.chicagocitationKabutz, Rudolf T. <i>"The (p, n) charge-exchange reaction on ⁹⁰Zr at intermediate energies."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Physics, 1992. http://hdl.handle.net/11427/17385en_ZA
dc.identifier.citationKabutz, R. 1992. The (p, n) charge-exchange reaction on ⁹⁰Zr at intermediate energies. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Kabutz, Rudolf T AB - Using the Time-of-Flight facility at the National Accelerator Centre at Faure, the (p, n) charge-exchange reaction has been studied at intermediate energies of 120, 160 and 200 MeV, and at angles of 0°, 2° and 4°. In this work the data collected for the ⁹⁰Zr target will be presented. The influence on the data from slow neutrons due to previous pulses is discussed and the best manner of removing them from the spectra is recommended. It is shown how the background cosmic rays can be utilised to measure the intrinsic resolution of the detectors and to obtain an estimate of the neutron energy threshold. The differential cross-sections for the states corresponding to Fermi and Gamow-Teller transitions were extracted from the time spectra. The sum of the strength of all the discrete Gamow-Teller states was determined and compared to the Ikeda Sum Rule. It was found that only 50% of the sum could be accounted for in the discrete states. An overview of the theory that has been developed to extract Gamow-Teller strengths from the (p, n) cross-sections is given. Some of the theoretical models that have been used to describe the ⁹⁰Zr(p, n)⁹⁰ Nb reaction and account for the missing Gamow-Teller strength are briefly discussed. DA - 1992 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1992 T1 - The (p, n) charge-exchange reaction on ⁹⁰Zr at intermediate energies TI - The (p, n) charge-exchange reaction on ⁹⁰Zr at intermediate energies UR - http://hdl.handle.net/11427/17385 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/17385
dc.identifier.vancouvercitationKabutz RT. The (p, n) charge-exchange reaction on ⁹⁰Zr at intermediate energies. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Physics, 1992 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/17385en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Physicsen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherPhysicsen_ZA
dc.subject.otherParticle Physicsen_ZA
dc.titleThe (p, n) charge-exchange reaction on ⁹⁰Zr at intermediate energiesen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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