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 |