| 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 |
