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Fast Neutron Assay Of Elemental Content Of Bulk Samples, Calder Emerson Lane
Fast Neutron Assay Of Elemental Content Of Bulk Samples, Calder Emerson Lane
UNLV Theses, Dissertations, Professional Papers, and Capstones
The purpose of this research was to analyze the capabilities of fast neutrons in the detection and analysis of various isotopes in bulk samples. The deuterium-tritium (DT) fusion reaction generates highly penetrating, high-energy (14.1-MeV) neutrons which induce nuclear reactions in irradiated targets. Neutrons and gamma rays are generated in these reactions. Emitted gamma rays are characteristic of the emitter; the gamma spectrum enables stoichiometric identification of the assayed samples. Neutron backscattering can also be used for identification of the elemental composition of the sample.
This work had three objectives. The first objective was to develop a computational technique to model …
Hdr Brachytherapy For Skin Cancer Using H.A.M. Applicator, Timothy Richard Thatcher
Hdr Brachytherapy For Skin Cancer Using H.A.M. Applicator, Timothy Richard Thatcher
UNLV Theses, Dissertations, Professional Papers, and Capstones
Skin cancer is the most common type of malignancy affecting both men and women in the United States. A majority of these cases are nonmelanoma skin cancers (NMSC) such as basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). The goal of any skin cancer treatment is to cure the lesion itself while also preserving function and optimizing superficial cosmesis. High dose rate (HDR) brachytherapy provides an alternative to superficial x-ray or electron beam for skin cancer treatment. Utilizing an Iridium 192 source soldered to the end of a wire, surface dose can be administered at predetermined positions with sharper …