Source: Dissertation Abstracts International, Volume: 36-12, Section: B, page: 6239. / Thesis (Ph.D.)--The Florida State University, 1975.

Source: Dissertation Abstracts International, Volume: 36-12, Section: B, page: 6240. / Thesis (Ph.D.)--The Florida State University, 1975.

Source: Dissertation Abstracts International, Volume: 37-07, Section: B, page: 3487. / Thesis (Ph.D.)--The Florida State University, 1976.

Source: Dissertation Abstracts International, Volume: 37-12, Section: B, page: 6204. / Thesis (Ph.D.)--The Florida State University, 1976.

Source: Dissertation Abstracts International, Volume: 38-08, Section: B, page: 3748. / Thesis (Ph.D.)--The Florida State University, 1977.

Source: Dissertation Abstracts International, Volume: 35-02, Section: B, page: 0983. / Thesis (Ph.D.)--The Florida State University, 1973.

Source: Dissertation Abstracts International, Volume: 35-10, Section: B, page: 5043. / Thesis (Ph.D.)--The Florida State University, 1974.

The level structure and lifetimes of excited states in $\sp{81}$Sr were investigated using the techniques of inbeam $\gamma$ ray spectroscopy. The reactions $\sp{56}$Fe($\sp{28}$Si,2pn)$\sp{81}$Sr and $\sp{55}$Mn($\sp{29}$Si,p2n)$\sp{81}$Sr were used at beam energies of 103.6 and 95.2 MeV, respectively. The targets consisted of 0.1 mm thick natural Fe (92% $\sp{56}$Fe abundance) and $\simeq$ 2 mg/cm$\sp2$ $\sp{55}$Mn evaporated on a thick lead backing. / The previously known level scheme was confirmed and a total of 15 new levels were placed in $\sp{81}$Sr. Tentative spin assignments were based on level systematics, directional correlations between $\gamma$ rays and effective level lifetimes. / The mean lifetimes of 12 states were measured and lifetime limits were assigned for 10 others using the Doppler shift attenuation method. The deformation properties of states in $\sp{81}$Sr were determined from the lifetimes and compared to the deformations inferred from level energies. / The four rotational band structures in $\sp{81}$Sr were found to have differing deformations which persist to high spins. The magnitude of this deformation ranges from $\beta$ $\simeq$ 0.2 to $\simeq$ 0.4. Band crossings in the moderately deformed g$\sb{9/2}$ yrast and K = 5/2$\sp-$ bands were observed and a very deformed K = 1/2$\sp{(+)}$ band was seen up to a tentative spin of 31/2$\hbar$. / The experimental results were compared to theoretical projected and deformed shell model calculations. The crossing observed in the yrast band has been attributed to the alignment of two g$\sb{9/2}$ protons. The properties of the K = 1/2$\sp{(+)}$ band are shown to be consistent with a configuration based on a d$\sb{5/2}$ "intruder" orbital. This is the first nucleus in the mass 80 region to exhibit such a strongly deformed band based on this configuration. / Source: Dissertation Abstracts International, Volume: 49-03, Section: B, page: 0805. / Major Professor: Samuel L. Tabor. / Thesis (Ph.D.)--The Florida State University, 1988.

The level structure of $\sp{83}$Zr was investigated via the fusion-evaporation reaction $\sp{54}$Fe($\sp{32}$S,2pn)$\sp{83}$Zr at beam energies between 105 and 120 MeV using in-beam $\gamma$-ray spectroscopy techniques. $\gamma$ transitions from the decay of $\sp{83}$Zr were unambiguously identified by means of recoil-$\gamma$ and neutron-$\gamma$ coincidence experiments. The decay scheme was constructed on the basis of Compton suppressed $\gamma$-$\gamma$ coincidences, delayed $\gamma$-$\gamma$ coincidences and angular distribution measurements. A total of 34 transitions were identified connecting 26 new energy levels and the previously known ground state. The lifetimes of two low-lying isomeric states were determined. / A decoupled positive parity band built on the odd $g\sb{9/2}$ neutron configuration was observed up to spin 37/2 $\hbar$ with the first band crossing due to proton alignment showing a sharp backbend at $\hbar\omega$ $\approx$ 0.5 MeV. A strongly coupled negative parity band based on a 5/2$\sp-$ bandhead was observed up to spin 35/2 $\hbar$. The angular momentum alignment is discussed and compared to neighboring nuclei. A theoretical analysis was performed using the Woods-Saxon cranking model. The results of the calculation are consistent with the experimental findings for $\sp{83}$Zr and its neighbors. Triaxial shapes are predicted for all observed bands in $\sp{83}$Zr. At higher angular momenta a transition to well deformed prolate bands including the $h\sb{11/2}$ intruder orbitals is expected. / Source: Dissertation Abstracts International, Volume: 49-03, Section: B, page: 0804. / Major Professor: Samuel L. Tabor. / Thesis (Ph.D.)--The Florida State University, 1987.

A microscopic study of nucleon elastic scattering from the light non-zero spin nuclei $\sp{6,7}$Li, $\sp9$Be, and $\sp{10,11}$B is performed utilizing target densities constructed to be consistent with the known electro-weak data. The isospin character of the quadrupole distributions of these nuclei is further specified by analysis of inelastic quadrupole transitions in these systems where appropriate. The microscopic formalism associated with electron-nucleus elastic scattering and required to exactly treat nuclear elastic scattering from non-spherical nuclei is developed and the connection to the distorted wave approximation (DWA) is made. Both exact and DWA solutions for the cross section and analyzing power for the elastic scattering of protons from these nuclei are executed using energy and density dependent effective nucleon-nucleon interactions. The incident proton energy is generally chosen to correspond to the energy of representative data sets in the range of 20 MeV to 200 MeV. The non-spherical potentials associated with these nuclei are shown to be the dominant feature observed by the scattering experiments in some energy-momentum regimes and non-negligible in all cases. The distorted wave approximation is shown to be quite reliable for intermediate energy proton elastic scattering. Additionally the non-locality inherent in the single nucleon knockout exchange amplitudes is formally expanded as a series in the velocity dependence of the target densities. The convergence properties of this series are shown to be appropriate for the analysis of nucleon nucleus scattering at these energies, and approximations to the terms in this series are developed. / Source: Dissertation Abstracts International, Volume: 49-03, Section: B, page: 0802. / Major Professor: Fred Petrovich. / Thesis (Ph.D.)--The Florida State University, 1987.