A state-of-the-art radiation detection system for simultaneous spectroscopy
of beta-particles and gamma-rays has been developed. The system utilizes a triplelayer
phoswich detector and a customized Digital Pulse Processor (DPP) built in
our laboratory. The DPP board was designed to digitally capture the analog signal
pulses and, following several digital preprocessing...
Multi-layer optically coupled scintillation based radiation detectors, known as phoswich detectors, have rapidly evolved in recent years. During the same time, digital signal processing has improved radiation discrimination accuracy and enhanced reliability, while reducing complexity and size of traditional analog signal processing methods. A new generation of high-speed radiation detectors...
The Code of Federal Regulations (10CFR20.1201) mandates occupational dose limits to the shallow, lens and deep tissue layers. The NRC-accepted procedure of estimating dose to these layers from contamination events is laborious. The current work aims to further the development of a portable phoswich-style skin dosimeter that will operate in...
The immobilization of chelators to solid supports has recently gained renewed interest due to the increasing biomedical and environmental applications made possible by these molecules’ ability to bind Fe(III) and other metal ions. The uses of immobilized chelators have expanded to include the treatment of metal overload in serum, the...
Voluntourism is a field of service work that combines volunteer work and leisure travel. With its increase in popularity in recent years, research concerning the impacts of voluntourism in developing countries is lacking. This study aims to discover the impacts that volunteers have on communities, specifically in Nepal. Using a...
The XEPHWICH system is a phoswich type (multiple scintillator) radiation
detector designed to detect several radioxenon isotopes with the goal of identifying covert
nuclear explosions. The XEPHWICH system is designed with the sole purpose of
replacing the Automated Radio-xenon Sampler/Analyzer (ARSA) in the United Nation's
(UN) Comprehensive Test Ban Treaty's...
The Nuclear Regulatory Commission (NRC) sets regulations for specific depths in the human skin for exposure to highly localized radioactive particles known as hot particles. This research determines the dose rate to a 10 cm² area with a density thickness of 1 mg/cm² at depths representing shallow dose, lens of...
The use of Ionization Chambers and Thermo-luminescent dosimeters (TLD's) in the medical field has established a need to determine if the skin depth dose response is comparable between the two detectors. This research will determine if the dose response from an Ionization chamber is comparable to a Thermo-luminescent dosimeter system...
Nonmelanoma skin cancer (NMSC) is the most common malignancy in Caucasian populations. One existing treatment modality for NMSCs is external radiotherapy delivered to the skin cancer tumor by a beta-emitter-containing radioactive skin patch. Alpha emitters, with their higher linear energy transfer than beta particles and shorter range in tissue, make...