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Study Of A Halpern Type 4pi Neutron Detector
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Book Synopsis Study of a Halpern-type 4[pi] Neutron Detector by : H. M. Gerstenberg
Download or read book Study of a Halpern-type 4[pi] Neutron Detector written by H. M. Gerstenberg and published by . This book was released on 1967 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Book Synopsis Study of a Halpern-type 4[pi] Neutron Detector by : H. M. Gerstenberg
Download or read book Study of a Halpern-type 4[pi] Neutron Detector written by H. M. Gerstenberg and published by . This book was released on 1967 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Book Synopsis Study of Halpern-type 4π Neutron Detector by :
Download or read book Study of Halpern-type 4π Neutron Detector written by and published by . This book was released on 1967 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of a Halpern-Type 4π Neutron Detector (Classic Reprint) by : H. M. Gerstenberg
Download or read book Study of a Halpern-Type 4π Neutron Detector (Classic Reprint) written by H. M. Gerstenberg and published by Forgotten Books. This book was released on 2017-10-28 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Study of a Halpern-Type 4π Neutron Detector The study of photonuclear interactions by measurements of photoneutron cross sections has been very fruitful. This is primarily because the photoneutron cross section represents a large percentage of the total absorption cross section; the percentage ranges from about 50% for the light elements to about 90% for the heavier elements such as lead. Of almost equal importance, however, is the fact that neutrons weakly interact with matter. This allows the use of thick targets and compensates for the relatively low photon yield available from accelerators such as the betatron. Unfortunately, the magnitude of the photoneutron cross sections, as measured in different laboratories, show differences of as much as The problem may be due, in part at least, to the detectors used to measure the photoneutron yields. The most commonly used system is a relatively simple 4h neutron detector which moderates and then captures the neutrons emitted from the target. It is possible that variations in the designs of these detectors resulting in non-uniform responses as a function of neutron energy may have caused the discrepancies in the measured neutron cross sections. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Book Synopsis Study of Halpern-type 4? Neutron Detector [with List of References by :
Download or read book Study of Halpern-type 4? Neutron Detector [with List of References written by and published by . This book was released on 1967 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Response, Calibration, and Use of a Halpern-type 4 [symbol for Pi] Neutron Detector by : Henry Mathew Gerstenberg
Download or read book Response, Calibration, and Use of a Halpern-type 4 [symbol for Pi] Neutron Detector written by Henry Mathew Gerstenberg and published by . This book was released on 1966 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications of the National Bureau of Standards, 1966-1967 by : United States. National Bureau of Standards
Download or read book Publications of the National Bureau of Standards, 1966-1967 written by United States. National Bureau of Standards and published by . This book was released on 1969 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalog of National Bureau of Standards Publications, 1966-1976 by : United States. National Bureau of Standards
Download or read book Catalog of National Bureau of Standards Publications, 1966-1976 written by United States. National Bureau of Standards and published by . This book was released on 1978 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. National Bureau of Standards. Technical Information and Publications Division Publisher : ISBN 13 : Total Pages :804 pages Book Rating :4.3/5 (91 download)
Book Synopsis Catalog of National Bureau of Standards Publications, 1966-1976: pt. 1 Citations and abstracts. v. 2. pt. 1. Key word index (A through L). v. 2. pt. 2. Key word index (M through Z) by : United States. National Bureau of Standards. Technical Information and Publications Division
Download or read book Catalog of National Bureau of Standards Publications, 1966-1976: pt. 1 Citations and abstracts. v. 2. pt. 1. Key word index (A through L). v. 2. pt. 2. Key word index (M through Z) written by United States. National Bureau of Standards. Technical Information and Publications Division and published by . This book was released on 1978 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government-wide Index to Federal Research & Development Reports by :
Download or read book Government-wide Index to Federal Research & Development Reports written by and published by . This book was released on 1967-05 with total page 1470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NBS Special Publication written by and published by . This book was released on 1967 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Report of the National Bureau of Standards by : United States. National Bureau of Standards
Download or read book Annual Report of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1966 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Masters Theses and Doctoral Dissertations in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States by :
Download or read book Masters Theses and Doctoral Dissertations in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States written by and published by . This book was released on 1968 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Master's Theses and Doctoral Dissertations in the Pure and Applied Sciences by :
Download or read book Master's Theses and Doctoral Dissertations in the Pure and Applied Sciences written by and published by . This book was released on 1966 with total page 170 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 1964-10 with total page 1668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Government Research and Development Reports by :
Download or read book U.S. Government Research and Development Reports written by and published by . This book was released on 1967 with total page 1152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements by :
Download or read book Government Reports Announcements written by and published by . This book was released on 1967 with total page 1182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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