Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Kevin E. Litke"'
Autor:
Ted W. Bowyer, Steven R Biegalski, Randy R. Kirkham, Harry S. Miley, Khris B. Olsen, Blandina R. Valenzuela, Robert A. Kiddy, Derek A. Haas, Paul W. Eslinger, Martin E. Keillor, Kevin E. Litke, Vincent T. Woods, James C. Hayes, Judah I. Friese, E. A. Lepel, R. C. Thompson, Scott J. Morris, Mark D. Engelmann, Lance S. Lidey, Jonathan W. Landen, Lawrence R. Greenwood
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 296:877-882
Aerosol collections were initiated at several locations by Pacific Northwest National Laboratory (PNNL) shortly after the Great East Japan earthquake of May 2011. Aerosol samples were transferred to laboratory high-resolution gamma spectrometers for
Autor:
April J. Carman, Charles W. Hubbard, Kevin E. Litke, Michael D. Ripplinger, Justin I. McIntyre, Derek A. Haas, Reynold Suarez, Brian T. Schrom, James C. Hayes, Tom R. Heimbigner, Matthew W. Cooper, Anthony R. Day, Ted W. Bowyer
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 282:755-759
Absolute efficiency calibration of radiometric detectors is frequently difficult and requires careful detector modeling and accurate knowledge of the radioactive source used. In the past we have calibrated the β–γ coincidence detector of the Auto
Autor:
Todd W. Hossbach, Anthony R. Day, Martin E. Keillor, Eric W. Hoppe, Brian J. Hyronimus, Kevin E. Litke, Allen Seifert, Esther E. Mintzer, Glen A. Warren, Craig E. Aalseth
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 282:233-237
High-purity copper has emerged as a preferred construction material for ultra-low-background HPGe spectrometers and offers excellent bulk radiopurity along with good electrical, thermal, and vacuum properties. Recently, these materials and techniques
Autor:
Allen Seifert, Harry S. Miley, Glen A. Warren, Kevin E. Litke, Justin I. McIntyre, Eric W. Hoppe, Todd W. Hossbach, Paula P. Bachelor, John E. Smart, Craig E. Aalseth, Danny J. Edwards, Shannon M. Schulte, Anthony R. Day
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 579:486-489
High-purity copper is an attractive material for constructing ultra-low-background radiation measurement devices. Many low-background experiments using high-purity copper have indicated surface contamination emerges as the dominant background. Radon
Autor:
Scott J. Morris, Charles W. Hubbard, Matthew W. Cooper, Ted W. Bowyer, Lance S. Lidey, Michael D. Ripplinger, Reynold Suarez, April J. Carman, James C. Hayes, Justin I. McIntyre, Kevin E. Litke, Tom R. Heimbigner, R. C. Thompson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 579:426-430
The Automated Radio-xenon Sampler/Analyzer (ARSA), designed by Pacific Northwest National Laboratory (PNNL) collects and detects several radioxenon isotopes, and is used to monitor underground nuclear explosions. The ARSA is very sensitive to 133Xe,
Autor:
Matthew W. Cooper, Kevin E. Litke, Craig E. Aalseth, Brian T. Schrom, Todd W. Hossbach, Reynold Suarez, C.E. Seifert, James C. Hayes, Justin I. McIntyre, Charles W. Hubbard, Mike D. Ripplinger, Tom R. Heimbigner
Publikováno v:
IEEE Nuclear Science Symposium Conference Record, 2005.
Phoswich detectors (two scintillators attached to the same photomultiplier-tube) have been used in the past to measure either betas or gammas separately but were not used to measure beta-gamma coincidence signatures. These coincidence signatures are
Autor:
Mike D. Ripplinger, Reynold Suarez, James C. Hayes, Craig E. Aalseth, Charles W. Hubbard, Todd W. Hossbach, April J. Carman, Harry S. Miley, Scott J. Morris, Tom R. Heimbigner, Kevin E. Litke, Justin I. McIntyre
Publikováno v:
DOE / OSTI
The automated radioxenon sampler/analyzer (ARSA) uses a highly compact, high efficiency beta-gamma coincidence detector to detect /sup 133/Xe, /sup 131m/Xe, /sup 133m/Xe and /sup 135/Xe for treaty monitoring and environmental sampling. This system ha