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dc.contributor.supervisor Sharma, Kumar S. (Physics and Astronomy) en
dc.contributor.author Clark, Jason A
dc.date.accessioned 2005-10-13T14:57:55Z
dc.date.available 2005-10-13T14:57:55Z
dc.date.issued 2005-10-13T14:57:55Z
dc.identifier.uri http://hdl.handle.net/1993/177
dc.description.abstract The Canadian Penning Trap (CPT) mass spectrometer at the Argonne National Laboratory makes precise mass measurements of both stable and unstable nuclides. To date, more than 60 radioactive isotopes having half-lives as short as one second have been measured with the CPT with a mass precision approaching 10 ppb. This thesis will present measurements made of nuclides along the rp-process path, which describes a process resulting from a series of rapid proton-capture reactions in an astrophysical environment. One possible site for the rp-process mechanism is an x-ray burst which results from the rapid accretion of hydrogen and helium from one star onto the surface of its neutron star binary companion. Mass measurements are required as key inputs to network calculations used to describe the rp-process in terms of the abundances of the nuclides produced, the light-curve profile of the x-ray bursts, and the energy produced. This thesis will describe the CPT apparatus, explain the method used to make precise mass measurements, and present the masses of the "waiting-point" nuclides <sup>68</sup>Se and <sup>64</sup>Ge. The mass measurement results, when used in x-ray burst models, confirm both <sup>68</sup>Se and <sup>64</sup>Ge as waiting-point nuclides which delay the rp-process by approximately 30 s and 7 s respectively. en
dc.format.extent 3730737 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.rights info:eu-repo/semantics/openAccess
dc.subject rp-process en
dc.subject Penning trap en
dc.subject x-ray burst en
dc.subject mass measurement en
dc.title Investigating the astrophysical rp-process through atomic mass measurements en
dc.type Electronic Thesis or Dissertation en
dc.type info:eu-repo/semantics/doctoralThesis
dc.degree.discipline Physics and Astronomy en
dc.contributor.examiningcommittee Sharma, Kumar S. (Physics and Astronomy) Barber, Robert C. (Physics and Astronomy) Savard, Guy (Adjunct Professor, Physics and Astronomy) Thomson, Douglas J. (Electrical and Computer Engineering) Rehm, Karl E. (External Examiner, Argonne National Laboratory) en
dc.degree.level Doctor of Philosophy (Ph.D.) en
dc.description.note October 2005 en


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