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Recent Developments In Position Sensitive Neutron Counting
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Book Synopsis Recent Developments in Position-sensitive Neutron Counting by :
Download or read book Recent Developments in Position-sensitive Neutron Counting written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Continuing research on advanced methods of thermal neutron detection and position sensing with gas-filled counters was aimed at improving their performance and extending the limits of their applicability. High electron drift velocities obtained from measurements on gas mixtures containing CF4 motivated us to evaluate the properties of 3He-CF4 and Ar-CF4 mixtures to show that these gases have the potential of improving the count rate capability, spatial resolution, and photon discrimination of neutron PSPCs (position-sensitive proportional counters) and fission counters. In support of the U.S. National Small-Angle Neutron Scattering (SANS) Facility we developed a large-area (65-cm x 65-cm) PSPC camera. RC position encoding was chosen for simplicity of construction, but since previous experience with this encoding method had been limited to smaller PSPCs (area
Book Synopsis Position-sensitive Detection of Thermal Neutrons by : Pierre Convert
Download or read book Position-sensitive Detection of Thermal Neutrons written by Pierre Convert and published by . This book was released on 1983 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of a High-count-rate Neutron Detector with Position Sensitivity and High Efficiency by :
Download or read book Development of a High-count-rate Neutron Detector with Position Sensitivity and High Efficiency written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: While the neutron scattering community is bombarded with hints of new technologies that may deliver detectors with high-count-rate capability, high efficiency, gamma-ray insensitivity, and high resolution across large areas, only the time-tested, gas-filled [sup 3]He and scintillation detectors are in widespread use. Future spallation sources with higher fluxes simply must exploit some of the advanced detector schemes that are as yet unproved as production systems. Technologies indicating promise as neutron detectors include pixel arrays of amorphous silicon, silicon microstrips, microstrips with gas, and new scintillation materials. This project sought to study the competing neutron detector technologies and determine which or what combination will lead to a production detector system well suited for use at a high-intensity neutron scattering source.
Book Synopsis Recent Developments in Neutron Detection and Multiplicity Counting with Liquid Scintillator by :
Download or read book Recent Developments in Neutron Detection and Multiplicity Counting with Liquid Scintillator written by and published by . This book was released on 2010 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: For many years at LLNL we have been developing time-correlated neutron detection techniques and algorithms for many applications including Arms Control, Threat Detection and Nuclear Material Assaying. Many of our techniques have been developed specifically for relatively low efficiency (a few %) inherent in the man-portable systems. Historically we used thermal neutron detectors (mainly 3He) taking advantage of the high thermal neutron interaction cross-sections but more recently we have been investigating fast neutron detection with liquid scintillators and inorganic crystals. We have discovered considerable detection advantages with fast neutron detection as the inherent nano-second production time-scales of fission and neutron induced fission are preserved instead of being lost in neutron thermalization required for thermal neutron detectors. We are now applying fast neutron technology (new fast and portable digital electronics as well as new faster and less hazardous scintillator formulations) to the safeguards regime and faster detector response times and neutron momentum sensitivity show promise in measuring, differentiating and assaying samples that have very high count rates as well as mixed fission sources (e.g. Cm and Pu). We report on measured results with our existing liquid scintillator array and progress on design of nuclear material assaying system that incorporates fast neutron detection.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1992-04 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experience with Position Sensitive Neutron Detectors at the Intense Pulsed Neutron Source by :
Download or read book Experience with Position Sensitive Neutron Detectors at the Intense Pulsed Neutron Source written by and published by . This book was released on 1990 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Developments In Fast Neutron Detection And Multiplicity Counting With Verification With Liquid Scintillator by :
Download or read book Recent Developments In Fast Neutron Detection And Multiplicity Counting With Verification With Liquid Scintillator written by and published by . This book was released on 2011 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: For many years at LLNL, we have been developing time-correlated neutron detection techniques and algorithms for applications such as Arms Control, Threat Detection and Nuclear Material Assay. Many of our techniques have been developed specifically for the relatively low efficiency (a few percent) attainable by detector systems limited to man-portability. Historically, we used thermal neutron detectors (mainly 3He), taking advantage of the high thermal neutron interaction cross-sections. More recently, we have been investigating the use of fast neutron detection with liquid scintillators, inorganic crystals, and in the near future, pulse-shape discriminating plastics which respond over 1000 times faster (nanoseconds versus tens of microseconds) than thermal neutron detectors. Fast neutron detection offers considerable advantages, since the inherent nanosecond production time-scales of spontaneous fission and neutron-induced fission are preserved and measured instead of being lost by thermalization required for thermal neutron detectors. We are now applying fast neutron technology to the safeguards regime in the form of fast portable digital electronics as well as faster and less hazardous scintillator formulations. Faster detector response times and sensitivity to neutron momentum show promise for measuring, differentiating, and assaying samples that have modest to very high count rates, as well as mixed fission sources like Cm and Pu. We report on measured results with our existing liquid scintillator array, and progress on the design of a nuclear material assay system that incorporates fast neutron detection, including the surprising result that fast liquid scintillator detectors become competitive and even surpass the precision of 3He-based counters measuring correlated pairs in modest (kg) samples of plutonium.
Book Synopsis Position Sensitive Counter Development at the Linac by :
Download or read book Position Sensitive Counter Development at the Linac written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In a novel application of the multiwire proportional counter we have imaged a collimated neutron beam. Although preliminary, the results are of sufficient import to be described here because of the potential wide application of the multiwire proportional counter to Laboratory problems. The counter was operated with a counting gas pressure of 20 Torr; the counting gas was pure C4H10. The radiator was a 235U foil. Under these conditions, the counter is (1) relatively insensitive to charged particles (other than fission fragments), (2) insensitive to .gamma.-radiation, and (3) has an efficiency for the detection of fission fragments independent of incident neutron energy over a wide range of neutron energies.
Book Synopsis Development of a position-sensitive fission counter and measurement of neutron flux distributions by : Hideshi Yamagishi
Download or read book Development of a position-sensitive fission counter and measurement of neutron flux distributions written by Hideshi Yamagishi and published by . This book was released on 2001 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Construction and Testing of a Large Position Sensitive Neutron Detector by : Carola Heitmann Butler
Download or read book The Construction and Testing of a Large Position Sensitive Neutron Detector written by Carola Heitmann Butler and published by . This book was released on 1987 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :International Workshop on Position Sensitive Neutron Detectors - Status and Perspectives Publisher : ISBN 13 : Total Pages :262 pages Book Rating :4.:/5 (722 download)
Book Synopsis International Workshop on Position Sensitive Neutron Detectors - Status and Perspectives by : International Workshop on Position Sensitive Neutron Detectors - Status and Perspectives
Download or read book International Workshop on Position Sensitive Neutron Detectors - Status and Perspectives written by International Workshop on Position Sensitive Neutron Detectors - Status and Perspectives and published by . This book was released on 2002 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975-04 with total page 1082 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Elements of Slow-Neutron Scattering by : J. M. Carpenter
Download or read book Elements of Slow-Neutron Scattering written by J. M. Carpenter and published by Cambridge University Press. This book was released on 2015-09-24 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive and up-to-date introduction to the fundamental theory and applications of slow-neutron scattering.
Download or read book INIS Atomindex written by and published by . This book was released on 1985 with total page 1288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Radioactivity Analysis by : Michael F. L'Annunziata
Download or read book Handbook of Radioactivity Analysis written by Michael F. L'Annunziata and published by Academic Press. This book was released on 2012-08-16 with total page 1420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authoritative reference providing the principles, practical techniques, and procedures for the accurate measurement of radioactivity.
Book Synopsis ERDA Energy Research Abstracts by : United States. Energy Research and Development Administration
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neutron Scattering for the Analysis of Biological Structures by : Benno P. Schoenborn
Download or read book Neutron Scattering for the Analysis of Biological Structures written by Benno P. Schoenborn and published by . This book was released on 1976 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:
