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Development of an Alpha/Beta/Gamma Phoswich-Based Radiation Detector for Nuclear Waste Stream Cleanup Processes

Description: The goal of this research is to design, build and test a phoswich-based radiation detector for simultaneously monitoring all radioactive components in the effluent resulting from the cleanup of nuclear waste
Date: March 10, 2004
Creator: Miller, William H. & Ghosh, Tushar
Partner: UNT Libraries Government Documents Department
open access

Portable Radiation Instrumentation Standardization

Description: This development work was undertaken to investigate and standardize scintillation detector and transistorized circuitry techniques in instruments used for detecting and measuring alpha and beta particles, gamma photons, and both slow and fast neutrons. At the present time, the standard radiation detection instrumentation used at Hanford employ vacuum-tube circuitry with typical detectors being ion chambers, G-M tubes, HF3 tubes, etc. The vacuum tubes require excessive battery power, and some of… more
Date: July 1, 1960
Creator: Spear, W. G.
Partner: UNT Libraries Government Documents Department
open access

High Density Nano-Electrode Array for Radiation Detection

Description: Bulk single crystals of Cd1-xZnxTe (x=0.04 to x=0.2) compound semiconductor is used for room temperature radiation detection. The production of large volume of Cd1-xZnxTe with low defect density is expensive. As a result there is a growing research interest in the production of nanostructured compound semiconductors such as Cd1-xZnxTe in an electrochemical route. In this investigation, Cd1-xZnxTe ternary compound semiconductor, referred as CZT, was electrodeposited in the form of nanowires onto… more
Date: May 7, 2010
Creator: Misra, Mano
Partner: UNT Libraries Government Documents Department
open access

White paper : the fourth amendment : implications for radiological and nuclear detection.

Description: The need to improve the radiation detection architecture has given rise to increased concern over the potential of equipment or procedures to violate the Fourth Amendment. Protecting the rights guaranteed by the Constitution is a foremost value of every government agency. However, protecting U.S. residents and assets from potentially catastrophic threats is also a crucial role of government. In the absence of clear precedent, the fear of potentially violating rights could lead to the rejection … more
Date: January 1, 2010
Creator: Levey, Brandon Seth
Partner: UNT Libraries Government Documents Department
open access

Final LDRD report : infrared detection and power generation using self-assembled quantum dots.

Description: Alternative solutions are desired for mid-wavelength and long-wavelength infrared radiation detection and imaging arrays. We have investigated quantum dot infrared photodetectors (QDIPs) as a possible solution for long-wavelength infrared (8 to 12 {mu}m) radiation sensing. This document provides a summary for work done under the LDRD 'Infrared Detection and Power Generation Using Self-Assembled Quantum Dots'. Under this LDRD, we have developed QDIP sensors and made efforts to improve these devi… more
Date: February 1, 2008
Creator: Cederberg, Jeffrey George; Ellis, Robert & Shaner, Eric Arthur
Partner: UNT Libraries Government Documents Department
open access

Study on thermal annealing of cadmium zinc telluride (CZT) crystals

Description: Cadmium Zinc Telluride (CZT) has attracted increasing interest with its promising potential as a room-temperature nuclear-radiation-detector material. However, different defects in CZT crystals, especially Te inclusions and dislocations, can degrade the performance of CZT detectors. Post-growth annealing is a good approach potentially to eliminate the deleterious influence of these defects. At Brookhaven National Laboratory (BNL), we built up different facilities for investigating post-growth a… more
Date: August 1, 2010
Creator: Yang, G.; Bolotnikov, A. E.; Fochuk, P. M.; Camarda, G. S.; Cui, Y.; Hossain, A. et al.
Partner: UNT Libraries Government Documents Department
open access

Process Monitor Analysis Victoreen Model 350

Description: Abstract: An analysis of the improved Model Number 350 Process Monitor was made so that it could be determined if this instrument would fulfill the need for gamma radiation detection instruments in the production buildings of Y-12. The results of these tests indicated the possibility of marked improvement in the monitor characteristics with minor redesigns. After these improvements have been made, this instrument will be a satisfactory monitor for this area.
Date: May 1, 1947
Creator: Harter, J. A. & Olson, E. L.
Partner: UNT Libraries Government Documents Department
open access

Electric Field Distribution of Cadmium Zinc Telluride (CZT)

Description: Cadmium Zinc Telluride (CZT) is attracting increasing interest with its promise as a room-temperature nuclear-radiation-detector material. The distribution of the electric field in CZT detectors substantially affects their detection performance. At Brookhaven National Laboratory (BNL), we employed a synchrotron X-Ray mapping technique and a Pockels-effect measurement system to investigate this distribution in different detectors. Here, we report our latest experimental results with three detect… more
Date: August 2, 2009
Creator: Yang, G.; Bolotnikov, A.; Camarda, G. S.; Cui, Y.; Hossain, A.; Kim, K. et al.
Partner: UNT Libraries Government Documents Department
open access

A Transistorized GM Survey Instrument

Description: A portable GM survey instrument was designed and developed which consists of a single transistor blocking-oscillator high voltage supply, a dual transistor multivibrator count-rate meter and a standard 30 mg/cm² glass-wall GM tube.
Date: January 5, 1956
Creator: Spear, W. G.
Partner: UNT Libraries Government Documents Department
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