Flat Response Neutron Detector

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Flat Response Neutron Detector

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Author : A. O. Hanson
language : en
Publisher:
Release Date : 1946

Flat Response Neutron Detector written by A. O. Hanson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1946 with Neutron counters categories.

The Flat Response Neutron Detector

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Author : Robert Wendel Johnson
language : en
Publisher:
Release Date : 1952

The Flat Response Neutron Detector written by Robert Wendel Johnson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1952 with categories.

Flat Response Neutron Detectors

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Author : Garth Richard Hogg
language : en
Publisher:
Release Date : 1962

Flat Response Neutron Detectors written by Garth Richard Hogg and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Neutron cross sections categories.

Design Of A Neutron Detector With A Flat Energy Response For Use In Time Of Flight Experiments

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Author : M. S. Coates
language : en
Publisher:
Release Date : 1968

Design Of A Neutron Detector With A Flat Energy Response For Use In Time Of Flight Experiments written by M. S. Coates and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Cross sections (Nuclear physics) categories.

Development Of A Solid State Neutron Detector For Snap 10a

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Author : A. Chesavage
language : en
Publisher:
Release Date : 1966

Development Of A Solid State Neutron Detector For Snap 10a written by A. Chesavage 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.

Study Of A Halpern Type 4 Pi Neutron Detector

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Author : H. M. Gerstenberg
language : en
Publisher:
Release Date : 1967

Study Of A Halpern Type 4 Pi Neutron Detector written by H. M. Gerstenberg and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Neutron counters categories.

The response to various neutron spectra of a 2-inch diameter BF3 proportional counter in a Halpern-type geometry has been studied as a function of moderator thickness. Neutron sources used were a calibrated RaDBe(a,n) source and a series of photoneutron sources using a number of bremsstrahlung spectra. The reactions used were: 16PO(gamma,n), 31P(gamma,n) and d(gamma,n). For these sources absolute neutron yields were determined either from the residual B+ activity or from the known cross section and the absolute bremsstrahlung intensity. Using these empirical data a final detector with 13 BF3 counters was constructed. Over the spectral range covered by the above sources the measured efficiency for counting neutrons of the final detector was 9.6 percent with an estimated uncertainty of plus or minus 0.5 percent, independent of spectrum. The detector was used to measure the neutron yields from Pb, Au, Ta, Ho, Ag, Cu, Co, Ca, P, Al, O and C for a series of bremsstrahlung energies between 12.0 and 29.0 MeV. These yields were compared with those calculated from previously published neutron yield cross sections. The data indicate that previously reported discrepancies in neutron yield data can probably be traced to the determination of neutron detector efficiencies. (Author).

Scintillator Fiber Optic Long Counter

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Author :
language : en
Publisher:
Release Date : 1994

Scintillator Fiber Optic Long Counter written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.

A flat response position sensitive neutron detector capable of providing neutron spectroscopic data utilizing scintillator fiber optic filaments embedded in a neutron moderating housing having an open end through which neutrons enter to be detected.

Design And Performance Of A New High Accuracy Combined Small Sample Neutron

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Author :
language : en
Publisher:
Release Date : 1993

Design And Performance Of A New High Accuracy Combined Small Sample Neutron written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.

This paper describes the design of an optimized combined neutron and gamma detector installed around a measurement well protruding from the floor of a glove box. The objective of this design was to achieve an overall accuracy for the plutonium element concentration in gram-sized samples of plutonium oxide powder approaching the (approximately)0.1--0.2% accuracies routinely achieved by inspectors' chemical analysis. The efficiency of the clam-shell neutron detector was increased and the flat response zone extended in axial and radial directions. The sample holder introduced from within the glove box was designed to form the upper reflector, while two graphite half-shells fitted around the thin neck of the high-resolution LEGE detector replaced the lower plug. The Institute for Reference Materials and Measurements (IRMM) in Geel prepared special plutonium oxide test samples whose plutonium concentration was determined to better than 0.05%. During a three week initial performance test in July 1992 at ITU Karlsruhe and in long term tests, it was established that the target accuracy can be achieved provided sufficient care is taken to assure the reproducibility of sample bottling and sample positioning. The paper presents and discusses the results of all test measurements.

Absolute Measurement Of Anti Nu Sub P For Sup 252 Cf Using The Ornl Large Liquid Scintillator Neutron Detector

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Author :
language : en
Publisher:
Release Date : 1981

Absolute Measurement Of Anti Nu Sub P For Sup 252 Cf Using The Ornl Large Liquid Scintillator Neutron Detector written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with categories.

The ORNL large liquid scintillator detector was used in a precise determination of anti .nu./sub p/, the number of neutrons emitted promptly, for spontaneous fission of /sup 252/Cf. Measurements of the detector efficiency over a broad energy region were made by means of a proton-recoil technique employing the ORELA white neutron source. Monte Carlo calculation of the detector efficiency for a spectrum representative of /sup 252/Cf fission neutrons was calibrated with these elaborate measurements. The unusually flat response of the neutron detector resulted in elimination of several known sources of error. Experimental measurement was coupled with calculational methods to correct for other known errors. These measurements lead to an unusually small estimated uncertainty of 0.2% in the value obtained, anti .nu./sub p/ = 3.773 +- 0.007.

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.