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Nuclear Resonance Fluorescence Excitations Near 2 MeV in 235U and 239Pu

Description: A search for nuclear resonance fluorescence excitations in {sup 235}U and {sup 239}Pu within the energy range of 1.0- to 2.5-MeV was performed using a 4-MeV continuous bremsstrahlung source at the High Voltage Research Laboratory at the Massachusetts Institute of Technology. Measurements utilizing high purity Ge detectors at backward angles identified 9 photopeaks in {sup 235}U and 12 photopeaks in {sup 239}Pu in this energy range. These resonances provide unique signatures that allow the mater… more
Date: December 27, 2006
Creator: Bertozzi, W.; Caggiano, J. A.; Hensley, W. K.; Johnson, M. S.; Korbly, S. E.; Ledoux, R. J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Children Exposed to Domestic Violence: Federal Assistance Programs

Description: The impact on children of domestic violence was an issue of interest in the 109th Congress. The first session of the 109th Congress ended with the passage of the Violence Against Women and Department of Justice Reauthorization Act of 2005 (P.L. 109-162), which contained new initiatives to address concerns about children and youth exposed to and victimized by domestic violence. This report discusses existing federal programs and initiatives that have been established to assist such children and … more
Date: December 27, 2006
Creator: Cooper, Edith Fairman
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advancing the Science of Natural and Enhanced Attenuation for Chlorinated Solvents

Description: This report summarizes the results of a three-year program that addressed key scientific and technical aspects related to natural and enhanced attenuation of chlorinated organics. The results from this coordinated three-year program support a variety of technical and regulatory advancements. Scientists, regulators, engineers, end-users and stakeholders participated in the program, which was supported by the U.S. Department of Energy (DOE) and the Interstate Technology and Regulatory Council (IT… more
Date: December 27, 2006
Creator: Looney, B.; Early, Thomas O.; Gilmore, Tyler; Chapelle, Francis H.; Cutshall, Norman H.; Ross, Jeff et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Transport, Targeting, and Applications of Metallic Functional Nanoparticles for Degradation of DNAPL Chlorinated Organic Solvents

Description: Dense Non-Aqueous Phase Liquid (DNAPL) such as trichloroethylene act as long term sources of groundwater contaminants and are difficult and expensive to remediate. DNAPL-contaminated sites are a significant financial liability for the Department of Energy and the private sector. The objective of this study was to engineer reactive Fe-based nanoparticles with specialized polymeric coatings to make them mobile in the subsurface and to provide them with an affinity for the DNAPL/water interface. T… more
Date: December 27, 2006
Creator: Lowry, Gregory V.; Majetich, Sara; Matyjaszewski, Krzysztof; Sholl, David & Tilton, Robert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Simulation and Analysis of Large-Scale Compton Imaging Detectors

Description: We perform simulations of two types of large-scale Compton imaging detectors. The first type uses silicon and germanium detector crystals, and the second type uses silicon and CdZnTe (CZT) detector crystals. The simulations use realistic detector geometry and parameters. We analyze the performance of each type of detector, and we present results using receiver operating characteristics (ROC) curves.
Date: December 27, 2006
Creator: Manini, H A; Lange, D J & Wright, D M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Simulation and Comparison of Various Gamma-Ray Imaging Detector Configurations for IPRL Devices

Description: Simulations are performed for seven different geometrical configurations of CdZnTe (CZT) detector arrays for Intelligent Personal Radiation Locator (IPRL) devices. IPRL devices are portable radiation detectors that have gamma-ray imaging capability. The detector performance is analyzed for each type of IPRL configuration, and the intrinsic photopeak efficiency, intrinsic photopeak count rate, detector image resolution, imaging efficiency, and imaging count rate are determined.
Date: December 27, 2006
Creator: Manini, H A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Elevated Concentrations of Primordial Radionuclides in Sediments from the Reedy River and Surrounding Creeks in Simpsonville, South Carolina

Description: A gamma-ray survey and analysis of sixteen riverbed samples from the Reedy River watershed near Simpsonville, SC were conducted and compared with national and international studies of primordial radionuclides. The study reported here follows on a recent discovery of anomalously high uranium concentrations in several private well waters in the area near Simpsonville, SC. A HPGe spectrometer was used for quantification of gamma emitting radionuclides in the sediments. All sediments contained radi… more
Date: December 27, 2006
Creator: Powell, B. A.; Hughes, L. D.; Soreefan, A. M.; Falta, D.; Wall, M. & DeVol, T. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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