|Student Name:||Captain Andrew G. Lerch|
|Thesis:||Nuclear Structure of Rhenium-186 Revealed by Neutron Capture Gamma-rays|
|Location:||BLDG 640, RM 353|
|Date & Time:||02/12/2014 at 1300|
|Abstract:|| The total radiative thermal neutron capture cross section of 186Re was determined from measurements of its gamma spectrum following irradiation of a 185Re target in the guided thermal neutron beam at the Budapest Research Reactor’s Prompt Gamma Activation Analysis facility. The cross section was obtained by first summing the experimentally measured partial gamma-ray production cross sections associated with the known ground state transitions of the decay scheme below 421 keV. These results were then added to the sum of the ground state transition cross sections emerging from the continuum, that were identified by the Monte Carlo statistical decay code, DICEBOX. The resulting thermal neutron capture cross section was determined to be 97 ± 3 b. This result is statistically comparable to measurements from previous works. Additionally, 54 new primary transitions were identified in this work via the binding energy test, thus improving the understanding of the decay scheme. All observed primary transitions populating adopted levels below 865 keV were used to compute the neutron separation energy of 6179.6 ± 0.3 keV. This result is also consistent with measurements made in previous works.