Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Richard W. Perkins"'
Autor:
Richard W. Perkins, Justin I. McIntyre, Judah I. Friese, Paula P. Bachelor, Glen A. Warren, Craig E. Aalseth, Harry S. Miley
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 276:363-367
In anticipation of a nuclear detonation, techniques to quickly assess the radiation exposure of evacuees should be developed. Based on experience relating neutron radiation exposures to activation products, measurement of activation products can be p
Autor:
L. Eric Smith, J. Edward Ellis, Craig E. Aalseth, Richard W. Perkins, Harry S. Miley, Todd W. Hossbach
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 505:320-323
Multicoincidence radionuclide analysis systems consisting of light-charged-particle detectors operating in coincidence with photon spectrometers are being developed to improve the sensitivity of radionuclide analysis in field applications. Requiring
A description of the DOE Radionuclide Aerosol Sampler/Analyzer for the Comprehensive Test Ban Treaty
Autor:
S. M. Bowyer, Richard W. Perkins, R. A. Warner, Charles W. Hubbard, H. S. Miley, A. D. McKinnon, R. C. Thompson
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 235:83-87
Radionuclide monitoring, though slower than vibrational methods of explosion detection, provides a basic and certain component of Comprehensive Test Ban treaty (CTBT) verification. Measurement of aerosol radioactive debris, specifically a suite of sh
Autor:
Richard W. Perkins, K.H. Abel, R. A. Warner, Mark E. Panisko, R. C. Thompson, T.W. Bowyer, A. D. McKinnon, Paul L. Reeder, Charles W. Hubbard
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 235:77-82
A fully automatic radioxenon sampler/analyzer (ARSA) has been developed and demonstrated for the collection and quantitative measurement of the four xenon radionuclides,131mXe(11.9 d),133mXe(2.2 d),133Xe(5.2 d), and135Xe(9.1 hr), in the atmosphere. T
Autor:
Harry S. Miley, S. M. Bowyer, R. A. Warner, A. D. McKinnon, Charles W. Hubbard, R. C. Thompson, Richard W. Perkins
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 235:115-119
A Radionuclide Aerosol Sampler/Analyzer (RASA Mark 4) has been developed at PNNL for use in verifying the Comprehensive Nuclear Test Ban Treaty (CTBT). The RASA Mark 4 collects about 20,000 m3 of air per day on a 0.25 m2 filter. This filter is automa
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 235:89-94
A beta-gamma coincidence counting system has been developed for automated analysis of Xe gas samples separated from air. The Xe gas samples are contained in a cylindrical plastic scintillator cell located between two NaI(T1) scintillation detectors.
Autor:
R. A. Warner, R. C. Thompson, H. S. Miley, Charles W. Hubbard, A. D. McKinnon, Richard W. Perkins, S. M. Bowyer
Publikováno v:
Scopus-Elsevier
Detecting nuclear debris from a nuclear weapon exploded in or substantially vented to the Earth's atmosphere constitutes the most certain indication that a violation of the Comprehensive Test Ban Treaty has occurred. For this reason, a radionuclide p
Publikováno v:
Journal of Environmental Radioactivity. 37:143-153
Measurements of 133Xe (τ12 = 5.2 days) atmospheric concentrations were performed during the fall of 1993 and throughout 1995 on ‘noble gas concentrates’ from the northeastern US. These samples were obtained from a commercial air-reduction plant
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 193:99-106
A large area beta scintillation detector has been developed which is currently capable of determining Sr-90/Y-90 contamination in surficial soils. The detector system employs scintillating fiber optic arrays, with active dimensions approximately 15 c
Publikováno v:
Journal of Environmental Radioactivity. 26:147-156
Traditional means of obtaining radionuclide concentrations in soils over large areas are often time-consuming, cumbersome, expensive, and potentially non-representative. In an attempt to develop improved systems and new methodologies for the rapid an