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Improved Multinuclide Imaging Of Special Nuclear Material Using A High Purity Germanium Double Sided Strip Detector, Fred D. Rothenbush Jr.
Improved Multinuclide Imaging Of Special Nuclear Material Using A High Purity Germanium Double Sided Strip Detector, Fred D. Rothenbush Jr.
Theses and Dissertations
The purpose of this research is to improve the ability to image Special Nuclear Material (SNM) using a High Purity Germanium Double Sided Strip Detector (HPGeDSSD) for use in the field of nuclear nonproliferation. When used for gamma spectrometry, HPGe detectors can efficiently distinguish various isotopes because of their good energy resolution. The detector used for this research is a liquid nitrogen cooled germanium detector with five charge collection strips on each face. The strips are orthogonal to each other, creating a five by five array of data collection pixels. When the 25 mm by 25 mm detector array is …
Feasibility Analysis Of A Compton Spectrometer System For Identification Of Special Nuclear Material, Chad C. Schools
Feasibility Analysis Of A Compton Spectrometer System For Identification Of Special Nuclear Material, Chad C. Schools
Theses and Dissertations
Current operational needs require the deployment of radiation detection equipment with the ability to accurately and reliably identify special nuclear materials and their byproducts without dependence on cryogenics. This requires a resolution of 0.5% or less over a range of 200 to 700 keV. The feasibility of a Compton spectrometer to achieve this resolution is examined. The Compton spectrometer system used consists of two detectors. The Compton scatter event occurs in a CdTe detector where the Compton electron energy is collected. Gamma rays scattered out of the CdTe at an angle determined by a conical collimator, are collected in a …