NDLI: <tex>$4 pi$</tex>NaI(Tl) Detector Array for In Vivo Neutron Activation Analysis

Content Provider	IEEE Xplore Digital Library
Author	Byun, S.H. Prestwich, W.V. Chin, K. McNeill, F.E. Chettle, D.R.
Copyright Year	1963
Abstract	A 4pigamma-ray spectrometer has been set up at McMaster Accelerator Laboratory for in vivo neutron activation analysis. To achieve an ideal detection geometry eight long NaI(Tl) detectors with square cross sections were arrayed. A central square hole was left empty for sample access. The pulse processing system comprised a signal sum box, a spectroscopy amplifier and an ADC. Spectrum accumulation in coincidence or anticoincidence mode was also feasible by adding separate shaping and time pick-off electronics to each detector unit. The calibration result showed a fairly high efficiency, a peak efficiency of 0.50 at 1332 keV, due to a sufficient detector thickness of 10.2 cm and a length of 40.6 cm. The spectrometer was used for the aluminum analysis in hand phantoms as the first application. The Al sensitivity and the detection limit achieved for a hand dose of 20 mSv are 1,310 cps/mg, 0.24 mg, respectively. The detection limit has been improved by a factor of 2.5
Sponsorship	IEEE Nuclear and Plasma Sciences Society Computer Applications in Nuclear and Plasma Sciences (CANPS) Lawrence Berkeley Lab. Lawrence Livermore Nat. Lab. APS College of William and Mary Continuous Electron Beam Accelerator Facility NASA Defence Nuclear Agency Sandia National Laboratories Jet Propulsion Laboratory Brookhaven Nat. Lab. Lawrence Livermore Nat. Lab IEEE/NPPS Radiat. Effects Committee Defence Nuclear Agency/DoD Sandia National Laboratories/DOE Jet Propulsion Laboratory/NASA Phillips Lab./DoD
Starting Page	2944
Ending Page	2947
Page Count	4
File Size	159678
File Format	PDF
ISSN	00189499
Volume Number	53
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Sensor arrays In vivo Neutrons Activation analysis Spectroscopy Pulse amplifiers Laboratories Geometry Signal processing scintillation detectors Gamma-ray detectors neutron activation analysis
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Electrical and Electronic Engineering Nuclear Energy and Engineering

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