Study Of A Halpern Type 4 Pi Neutron Detector
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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).
Publications
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Author : United States. National Bureau of Standards
language : en
Publisher:
Release Date : 1969
Publications written by United States. National Bureau of Standards and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Government publications categories.
Catalog Of National Bureau Of Standards Publications 1966 1976 Citations And Abstracts
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Author : United States. National Bureau of Standards. Technical Information and Publications Division
language : en
Publisher:
Release Date : 1978
Catalog Of National Bureau Of Standards Publications 1966 1976 Citations And Abstracts written by United States. National Bureau of Standards. Technical Information and Publications Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Government publications categories.
Study Of A Halpern Type 4 Pi Neutron Detector
DOWNLOAD
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).
Nbs Technical Note
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Author :
language : en
Publisher:
Release Date : 1967-06
Nbs Technical Note written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967-06 with Physical instruments categories.
Government Wide Index To Federal Research Development Reports
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Author :
language : en
Publisher:
Release Date : 1967
Government Wide Index To Federal Research Development Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Government publications categories.
Publications Of The National Bureau Of Standards Catalog
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Author : United States. National Bureau of Standards
language : en
Publisher:
Release Date : 1966
Publications Of The National Bureau Of Standards Catalog written by United States. National Bureau of Standards and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with categories.
Publications Of The National Bureau Of Standards
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Author : United States. National Bureau of Standards
language : en
Publisher:
Release Date : 1966
Publications Of The National Bureau Of Standards written by United States. National Bureau of Standards and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Washington (D.C.) categories.
Publications Of The National Bureau Of Standards 1966 1967
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Author : United States. National Bureau of Standards
language : en
Publisher:
Release Date : 1969
Publications Of The National Bureau Of Standards 1966 1967 written by United States. National Bureau of Standards and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with categories.
Catalog Of National Bureau Of Standards Publications 1966 1976
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Author : United States. National Bureau of Standards
language : en
Publisher:
Release Date : 1978
Catalog Of National Bureau Of Standards Publications 1966 1976 written by United States. National Bureau of Standards and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Government publications categories.