Multipole mixing ratios of transitions out of high spin gamma vibrational states in neutron rich Mo, Ru isotopes

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dc.contributor.advisor Hamilton, Joseph H.
dc.contributor.author Fenker, Benjamin
dc.date.accessioned 2010-06-15T21:01:08Z
dc.date.available 2010-06-15T21:01:08Z
dc.date.issued 2010-04-27
dc.identifier.uri http://hdl.handle.net/1803/4106
dc.description Highest Honors in Physics
dc.description.abstract Current models of nuclear structure describe nuclear states in terms of collective vibrations and rotations of a ground state. - One such quadrupole vibrational band is the gamma-band formed by vibrations of the short sides of a deformed nucleus. - When a nucleus that is in this mode decays to its ground state, the electromagnetic radiation is predicted to be entirely quadrupole in nature. - This prediction has been well documented in a wide range of nuclei. - However, a recent study of neutron rich molybdenum and ruthenium isotopes found a few gamma-band to ground-band transitions that contained almost no quadrupole radiation. - This work utilizes the Gammasphere detector array to examine the angular correlations in the de-excitations of the secondary fission fragments of 252Cf in order to make independent measurements of these results. - This work also uses the same technique to measure the multipole mixing ratios of gamma-band to ground-band transitions originating in states with spin-parity as high as 9+. - The results demonstrate that in these nuclei, electric quadrupole radiation is strongly favored in gamma to ground band transitions as has been predicted by theory. en_US
dc.language.iso en_US en_US
dc.publisher Vanderbilt University. Dept. of Physics and Astronomy en_US
dc.subject Nuclear deformation en_US
dc.subject Neutron-rich en_US
dc.subject Multipole mixing ratios en_US
dc.subject High spin en_US
dc.subject Gamma vibrational states en_US
dc.subject Mo, Ru isotopes en_US
dc.subject.lcsh Spontaneous fission en_US
dc.subject.lcsh Angular correlations (Nuclear physics) en_US
dc.subject.lcsh Nuclear structures en_US
dc.subject.lcsh Nuclear shapes en_US
dc.subject.lcsh Molybdenum -- Isotopes en_US
dc.subject.lcsh Ruthenium -- Isotopes en_US
dc.title Multipole mixing ratios of transitions out of high spin gamma vibrational states in neutron rich Mo, Ru isotopes en_US
dc.type Thesis en_US
dc.description.college College of Arts and Science en_US
dc.description.department Dept. of Physics and Astronomy en_US

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