“Diffracting Intensity from Vibrating Crystals.”
This study is concerned with the diffraction of a collimated beam of monoenergetic thermal neutron interacting with lattice planes of a single quartz crystal. The intensity of thermal neutron diffracted from some crystal planes is increased and is decreased for few planes at their fundamental piezoelectric modes when a single quartz crystal is vibrated. The extinction of the Bragg is changed using the neutron diffractometer. The results are used to compare experimental data with theoretical modes, involving Nuclear Reaction and Scattering. A single silicon crystal neutron diffractometer was designed and constructed. Following this a dual-axis neutron diffractometer was used in conjunction with a single quartz crystal oscillator which vibrated the single quartz crystal at its resonant frequency. The research was conducted at the Nuclear Reactor Facility.
“Decay Scheme of 188Hg.”
This study is concerned with the application of singles and the coincidence methods in the analysis of the nuclear decay scheme of 188Hg. The research namely Structure and Decay Processes of the Nuclear Spectroscopy, involved the construction of the energy levels for 188Au based on the singles and coincidence gamma ray data for the decay of 188Hg. The first step in this study involved obtaining the singles measurements in the decay of 188Hg to 188Au. After the gamma ray transitions were identified, assignments based on coincidence measurements were made, in order to enable one to construct the energy levels of 188Au. The research was conducted at the Oak Ridge National Laboratory Facility.
“Study of Alpha Decay of Neutron Deficient Isotopes in the Mass Range Tin (Z=50) and Lead (Z=82) Including the New Isotopes Pb (Z≤188) and Tl (Z=182).”
This study is made to express the physics meaning of alpha decay systematic in the lead region from nuclear structural standpoints, and to predict the unknown atomic alpha decay Q values using the latest available data. From the plot of the reduced width of isotopes versus neutron numbers, an abrupt change was observed in the reduced width of the magic number. This phenomenon is explained as a shell effect. Also using the plots of alpha decay Q values versus neutron numbers of isotopes, and from the resemblance between the patterns of the alpha decay Q values and the reduced width, some explanations offered. The observed abrupt change in the reduced width is due to the effect of the alpha decay Q values along with the penetration factor ‘P’. It also appears necessary that there exist a sharp difference between the parent and daughter nuclei, the nuclear structural effect based on a simple model improves the agreement between experiment and theory. Further research is possible in the area of experimental and theoretical atomic and nuclear physics in order to understand the properties of nuclei in the region N and Z = 50, 82, and 126. The research was conducted at the Oak Ridge National Laboratory Facility.
“Decay Schemes of 95Nbm and the Decay Sequence of 95Zr --> 95Nbm --> 95Mo”.
This study is concerned with the application of singles method in the analysis of the nuclear Decay Schemes of 95Nbm and the Decay Sequence of 95Zr --> 95Nbm --> 95Mo.” The research namely, Structure and Decay Processes of the Nuclear Spectroscopy, involved the construction of the energy levels of the Decay Schemes of 95Nbm and the Decay Sequence of 95Zr --> 95Nbm --> 95Mo.” The research was conducted at the Breazeale Nuclear Reactor, Pennsylvania State University Research Nuclear Reactor Facility.