Neutron Counting And Gamma Spectroscopy With Pvt Detectors
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Neutron Counting And Gamma Spectroscopy With Pvt Detectors
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Author :
language : en
Publisher:
Release Date : 2011
Neutron Counting And Gamma Spectroscopy With Pvt Detectors written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Radiation portals normally incorporate a dedicated neutron counter and a gamma-ray detector with at least some spectroscopic capability. This paper describes the design and presents characterization data for a detection system called PVT-NG, which uses large polyvinyl toluene (PVT) detectors to monitor both types of radiation. The detector material is surrounded by polyvinyl chloride (PVC), which emits high-energy gamma rays following neutron capture reactions. Assessments based on high-energy gamma rays are well suited for the detection of neutron sources, particularly in border security applications, because few isotopes in the normal stream of commerce have significant gamma ray yields above 3 MeV. Therefore, an increased count rate for high-energy gamma rays is a strong indicator for the presence of a neutron source. The sensitivity of the PVT-NG sensor to bare 252Cf is 1.9 counts per second per nanogram (cps/ng) and the sensitivity for 252Cf surrounded by 2.5 cm of polyethylene is 2.3 cps/ng. The PVT-NG sensor is a proof-of-principal sensor that was not fully optimized. The neutron detector sensitivity could be improved, for instance, by using additional moderator. The PVT-NG detectors and associated electronics are designed to provide improved resolution, gain stability, and performance at high-count rates relative to PVT detectors in typical radiation portals. As well as addressing the needs for neutron detection, these characteristics are also desirable for analysis of the gamma-ray spectra. Accurate isotope identification results were obtained despite the common impression that the absence of photopeaks makes data collected by PVT detectors unsuitable for spectroscopic analysis. The PVT detectors in the PVT-NG unit are used for both gamma-ray and neutron detection, so the sensitive volume exceeds the volume of the detection elements in portals that use dedicated components to detect each type of radiation.
Neutron Gamma Ray Spectrometer
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Author : James Duncan Hall
language : en
Publisher:
Release Date : 1962
Neutron Gamma Ray Spectrometer written by James Duncan Hall and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Gamma ray spectrometry categories.
A neutron-gamma ray spectrometer developed at Texas Nuclear Corporation is described. The spectrometer employs pulse shape discrimination in an organic scintillator detector to selectively detect neutrons or gamma rays in a mixed field by a method not utilizing space charge limiting. Selective detection may be obtained for neutrons of energy higher than 0.7 MeV and for gamma rays above 0.25 MeV. Spectral information is usable to 15 MeV for neutrons and to 4 MeV for gamma rays. Detection efficiencies range from about 6% to 30%. Typical spectra, data analysis procedure, and operating characteristics of the spectrometer are presented.
Literature Search On Neutron Detectors
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Author : Frances L. Sachs
language : en
Publisher:
Release Date : 1951
Literature Search On Neutron Detectors written by Frances L. Sachs and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1951 with Neutrons categories.
Nuclear Radiation Detectors
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Author : S. S. Kapoor
language : en
Publisher: New Age International
Release Date : 1986-04
Nuclear Radiation Detectors written by S. S. Kapoor and has been published by New Age International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986-04 with Neutron counters categories.
Neutron Detectors
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Author : International Atomic Energy Agency
language : en
Publisher:
Release Date : 1966
Neutron Detectors written by International Atomic Energy Agency and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Neutron counters categories.
A child speculates about sleeping next to various animals in various places other than one's own, and most desirable, warm bed.
Neutron Detectors For Scattering Applications
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Author : Yacouba Diawara
language : en
Publisher: Springer Nature
Release Date : 2023-08-04
Neutron Detectors For Scattering Applications written by Yacouba Diawara and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-08-04 with Science categories.
This book covers the most common neutron detectors used in neutron scattering facilities and all of those in use at Oak Ridge National Lab. It starts describing the facilities, instruments and the critical detector parameters needed by various instruments. Then the key components of the 3He-based linear position-sensitive detectors as well as on their electronics, which require particular attention to signal processing and noise reduction, are introduced. One chapter is dedicated to the 3He alternatives where scintillators play a critical role. It also covers emerging neutron detection technologies including semiconductors, vacuum-based devices and their associated readouts, which will be required in the future for high rate and high-resolution neutron detectors. The authors explain the logic behind the choice of materials as well as the various constraints that neutron detectors must respect to be useful. Some of these constraints, such as efficiency and gamma-ray sensitivity are common to all neutron counters while others, like timing resolution, dynamic range, and peak counting rate, depend on the applications. The book guides experts, the nuclear science community, and young scholars through the physical processes and the required electronics in a way that is accessible for those not professionally involved in designing detector’s components and electronic circuits.
The Transmission Of Neutrons And Gamma Rays Through Air Slots The Transmission Of Neutrons Through Straight Slots In Water
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Author : Robert D. Schamberger
language : en
Publisher:
Release Date : 1954
The Transmission Of Neutrons And Gamma Rays Through Air Slots The Transmission Of Neutrons Through Straight Slots In Water written by Robert D. Schamberger and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1954 with Gamma rays categories.
Experiments In Nuclear Science
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Author :
language : en
Publisher:
Release Date : 1976
Experiments In Nuclear Science written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Nuclear counters categories.
Scintillation Spectroscopy Of Gamma Radiation
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Author : Stephen M. Shafroth
language : en
Publisher:
Release Date : 1967
Scintillation Spectroscopy Of Gamma Radiation written by Stephen M. Shafroth and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Gamma ray spectrometry categories.
Monitoring Taconite Process Streams With Thermal Neutron Capture Gamma Ray Analysis
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Author : Franklin B. W. Woodbury
language : en
Publisher:
Release Date : 1980
Monitoring Taconite Process Streams With Thermal Neutron Capture Gamma Ray Analysis written by Franklin B. W. Woodbury and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Flotation categories.