Wen X.,University of Utah |
Kavouras J.G.,University of Utah |
Nakazawa D.R.,Canberra Industries |
Yang H.,University of Utah
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | Year: 2013
Photon-induced fission has been investigated as a method to detect and identify nuclear materials. Although high-energy delayed-fission γ-rays have been considered as a reliable signature for detection of fissionable materials, interference from γ-rays produced as secondary effects from other photonuclear reactions is inevitable. This effect has been studied in distinguishing fissionable materials from non-fissionable materials based on differential delayed γ-ray yields via both simulation and measurements. The energy spectra of delayed-photofission γ-rays carry isotopic information of the target materials. The feasibility of accurate spectrometry measurements in between intense linear accelerator pulses has been demonstrated using three independent spectroscopy systems. The measured delayed γ-rays spectra were then compared with MCNPX simulation results. Through the comparison, this article intends to show the capabilities of the current version of MCNPX in applications of simulating the photofission process. © 2013 Elsevier B.V.
Canberra Industries | Date: 2013-01-25
A spatially-aware radiation probe system/method allowing for detection and correction of radiation readings based on the position and/or movement of a radiation detector is disclosed. The system incorporates a radiation detector combined with a spatially-aware sensor to permit detection of spatial context parameters associated with the radiation detector and/or object being probed. This spatial context information is then used by analysis software to modify the detected radiation values and/or instruct the radiation probe operator as to appropriate measurement activity to ensure accurate radiation measurements. The spatially-aware sensor may include but is not limited to: distance sensors to determine the distance between the radiation detector and the object being monitored; accelerometers integrated within the radiation detector to detect movement of the radiation detector; and/or axial orientation sensors to determine the axial orientation of the radiation detector.
Canberra Industries | Date: 2016-05-18
Electrical components in the nature of electric contactors; Experimental devices in the field of fusion technologies, namely, cryostats.
Canberra Industries | Date: 2016-05-20
Computer software to maintain and operate computer system; Electronic software updates, namely, downloadable computer software and associated data files for updating computer software in the fields of spectroscopy in nuclear laboratory devices, provided via computer and communication networks; Electronic software updates, namely, downloadable computer software and associated data files for updating computer software in the fields of management of nuclear measurement of nuclear measurement laboratory devices, gamma and alpha spectromerters, data transfer, in nuclear power plant radiochemistry count rooms, labs and monitoring facilities, provided via computer and communication networks.
Aalseth C.E.,Pacific Northwest National Laboratory |
Barbeau P.S.,University of Chicago |
Barbeau P.S.,Stanford University |
Colaresi J.,Canberra Industries |
And 17 more authors.
Physical Review Letters | Year: 2011
Fifteen months of cumulative CoGeNT data are examined for indications of an annual modulation, a predicted signature of weakly interacting massive particle (WIMP) interactions. Presently available data support the presence of a modulated component of unknown origin, with parameters prima facie compatible with a galactic halo composed of light-mass WIMPs. Unoptimized estimators yield a statistical significance for a modulation of ∼2.8σ, limited by the short exposure. © 2011 American Physical Society.