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Analysis Of The Neutron Capture Cross Section And Resonance Integral Of Hafnium
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Book Synopsis Analysis of the Neutron Capture Cross Section and Resonance Integral of Hafnium by : I. Itkin
Download or read book Analysis of the Neutron Capture Cross Section and Resonance Integral of Hafnium written by I. Itkin and published by . This book was released on 1962 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hafnium Resonance Parameter Analysis Using Neutron Capture and Transmission Experiments by :
Download or read book Hafnium Resonance Parameter Analysis Using Neutron Capture and Transmission Experiments written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this work is to determine the resonance parameters for stable hafnium isotopes in the 0.005 - 200 eV region, with special emphasis on the overlapping 176Hf and 178Hf resonances near 8 eV. Accurate hafnium cross sections and resonance parameters are needed in order to quantify the effects of hafnium found in zirconium, a metal commonly used in reactors. The accuracy of the cross sections and the corresponding resonance parameters used in current nuclear analysis tools are rapidly becoming the limiting factor in reducing the overall uncertainty on reactor physics calculations. Experiments measuring neutron capture and transmission are routinely performed at the Rensselaer Polytechnic Institute (RPI) LINAC using the time-of flight technique. 6Li glass scintillation detectors were used for transmission experiments at flight path lengths of 15 and 25 m, respectively. Capture experiments were performed using a sixteen section NaI multiplicity detector at a flight path length of 25 m. These experiments utilized several thicknesses of metallic and isotope-enriched liquid Hf samples. The liquid Hf samples were designed to provide information on the 176Hf and 178Hf contributions to the 8 eV doublet without saturation. Data analyses were performed using the R-matrix Bayesian code SAMMY. A combined capture and transmission data analysis yielded resonance parameters for all hafnium isotopes from 0.005 - 200 eV. Additionally, resonance integrals were calculated, along with errors for each hafnium isotope, using the NJOY and INTER codes. The isotopic resonance integrals calculated were significantly different than previous values. The 176Hf resonance integral, based on this work, is approximately 73% higher than the ENDF/B-VI value. This is due primarily to the changes to resonance parameters in the 8 eV resonance, the neutron width presented in this work is more than twice that of the previous value. The calculated elemental hafnium resonance integral however, changed very little.
Book Synopsis Hafnium Resonance Parameter Analysis Using Neutron Capture and Transmission Experiments by : Y. Danon
Download or read book Hafnium Resonance Parameter Analysis Using Neutron Capture and Transmission Experiments written by Y. Danon and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this work is to determine resonance parameters for stable hafnium isotopes in the 0.005-200 eV region, with special emphasis on the overlapping {sup 176}Hf and {sup 178}Hf resonances near 8 eV. The large neutron cross section of hafnium, combined with its corrosion resistance and excellent mechanical properties, make it a useful material for controlling nuclear reactions. Experiments measuring neutron capture and transmission were performed at the Rensselaer Polytechnic Institute (RPI) electron linear accelerator (LINAC) using the time of flight method. {sup 6}Li glass scintillation detectors were used for transmission experiments at flight path lengths of 15 and 25 m. Capture experiments were done using a sixteen section NaI(Tl) multiplicity detector at a flight path length of 25 m. These experiments utilized various thicknesses of metallic and isotopically-enriched liquid samples. The liquid samples were designed to provide information on the {sup 176}Hf and {sup 178}Hf contributions to the 8 eV doublet without saturation. Data analysis was done using the R-matrix Bayesian code SAMMY version M6 beta. SAMMY is able to account for experimental resolution effects for each of the experimental setups at the RPI LINAC, and also can correct for multiple scattering effects in neutron capture yield data. The combined capture and transmission data analysis yielded resonance parameters for all hafnium isotopes from 0.005-200 eV. Resonance integrals were calculated along with errors for each hafnium isotope using the NJOY [1] and INTER [2] codes. The isotopic resonance integrals calculated were significantly different than previously published values; however the calculated elemental hafnium resonance integral changed very little.
Book Synopsis Measurement and Analysis of the Resolved Resonance Cross Sections of the Natural Hafnium Isotopes by :
Download or read book Measurement and Analysis of the Resolved Resonance Cross Sections of the Natural Hafnium Isotopes written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Hafnium is a ductile metallic element with a large neutron absorption cross section. It can be used in reactor control rods to regulate the fission process. The NEA High Priority Request List for nuclear data presents a need for improved characterisation of the hafnium cross section in the resolved resonance region. This thesis presents new resonance cross section parameters for the six natural hafnium isotopes. Cross section measurements, supported by the NUDAME and EUFRAT projects, were performed at the IRMM Geel GELINA time-of-flight facility. Capture experiments were conducted on the 12 m, 28 m and 58 m flight paths using C\(_6\)D\(_6\) detectors and transmission experiments were performed at flight paths of 26 m and 49 m using a \(^6\)Li glass detector. The samples used were metallic natural hafnium discs of various thicknesses and hafnium oxide powders, with differing isotopic enrichments. Data analysis was performed using the least square fitting REFIT code, which was updated during this work. The use of isotopically-enriched samples enabled previously unrecorded resonances to be allocated to the correct isotope. The resulting evaluated data files extend the upper energy limits of the resolved resonance regions for the \(^{174}\)Hf, \(^{176}\)Hf, \(^{177}\)Hf, \(^{178}\)Hf, \(^{179}\)Hf and \(^{180}\)Hf isotopes, relative to the current European recommended evaluation (JEFF3.1), to 250 eV, 3 keV, 1 keV, 3 keV, 1 keV and 3 keV respectively. The natural hafnium resonance integral calculated from the new resonance parameters is 1.2% lower than the integral corresponding to the JEFF3.1 evaluated hafnium data. Comparison of calculated to experimental k-effective values for appropriate zero-power reactor assemblies show improvement over the JEFF3.1 data.
Book Synopsis Hafnium Neutron Cross Sections and Resonance Analysis by : Michael J. Trbovich
Download or read book Hafnium Neutron Cross Sections and Resonance Analysis written by Michael J. Trbovich and published by . This book was released on 2003 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Atlas of Neutron Resonances by : Said F. Mughabghab
Download or read book Atlas of Neutron Resonances written by Said F. Mughabghab and published by Elsevier Science. This book was released on 2018-02-13 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlas of Neutron Resonances: Resonance Properties and Thermal Cross Sections Z=61-102, Sixth Edition, contains an extensive list of detailed individual neutron resonance parameters for Z=61-102, thermal cross sections, capture and fission resonance integrals, average resonance parameters, and a short survey of the physics of thermal and resonance neutrons. The long introduction contains: nuclear physics formulas aimed at neutron physicists; topics of special interest such as valence neutron capture, nuclear level density parameters, and s-, p-, and d-wave neutron strength functions; and various comparisons of measured quantities with the predictions of nuclear models, such as the optical model neutron-induced fission. As in the last edition, additional features have been added to appeal to a wider spectrum of users. These include: spin-dependent scattering lengths that are of interest to solid-state physicists, nuclear physicists and neutron evaluators; calculated and measured Maxwellian average 5-keV and 30-keV capture cross sections of importance to astrophysicists involved in nucleosynthesis modeling; s-, p-, and d- wave average radiative widths; nuclear level density parameters; and average fission widths derived from average fission cross sections.
Book Synopsis Measurements of Neutron Radiative Capture Resonance Integrals by : Leo Gay LeSage
Download or read book Measurements of Neutron Radiative Capture Resonance Integrals written by Leo Gay LeSage and published by . This book was released on 1966 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis THE THERMAL NEUTRON CAPTURE CROSS-SECTION AND THE RESONANCE CAPTURE INTEGRAL OF 124Xe. Reprinted from JOURNAL OF INORGANIC AND NUCLEAR CHEMISTRY Vol. 26 - 1964 by :
Download or read book THE THERMAL NEUTRON CAPTURE CROSS-SECTION AND THE RESONANCE CAPTURE INTEGRAL OF 124Xe. Reprinted from JOURNAL OF INORGANIC AND NUCLEAR CHEMISTRY Vol. 26 - 1964 written by and published by . This book was released on 1964 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Neutron Capture Cross Sections Resonance Integrals and G-factors by : S. F. Mughabghab
Download or read book Thermal Neutron Capture Cross Sections Resonance Integrals and G-factors written by S. F. Mughabghab and published by . This book was released on 2003 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Neutron Capture Cross-Section and Resonance Capture Integral of 22Na by : Atomic Energy of Canada Limited
Download or read book Thermal Neutron Capture Cross-Section and Resonance Capture Integral of 22Na written by Atomic Energy of Canada Limited and published by . This book was released on 1965 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Thermal Neutron Capture Cross Section and the Resonance Capture Integral of 1°°Mo by : M.J. Cabell
Download or read book The Thermal Neutron Capture Cross Section and the Resonance Capture Integral of 1°°Mo written by M.J. Cabell and published by . This book was released on 1960 with total page 9 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 1976 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Thermal Neutron Capture Cross-section and Resonance Capture Integral of 124 I by : Marcello Bresesti
Download or read book The Thermal Neutron Capture Cross-section and Resonance Capture Integral of 124 I written by Marcello Bresesti and published by . This book was released on 1965 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Thermal Neutron Capture Cross Section and the Resonance Capture Integral of U236 by : M. J. Cabell
Download or read book The Thermal Neutron Capture Cross Section and the Resonance Capture Integral of U236 written by M. J. Cabell and published by . This book was released on 1958 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Neutron-Capture Cross Section and Resonance-Capture Integral of Ru106 by : Atomic Energy of Canada Limited
Download or read book Thermal Neutron-Capture Cross Section and Resonance-Capture Integral of Ru106 written by Atomic Energy of Canada Limited and published by . This book was released on 1965 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effective and Thermal Neutron Capture Cross Section and Resonance Capture Integral of Pr143 by : Atomic Energy of Canada Limited
Download or read book Effective and Thermal Neutron Capture Cross Section and Resonance Capture Integral of Pr143 written by Atomic Energy of Canada Limited and published by . This book was released on 1959 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nuclear Power Reactor Instrumentation Systems Handbook by : Joseph M. Harrer
Download or read book Nuclear Power Reactor Instrumentation Systems Handbook written by Joseph M. Harrer and published by . This book was released on 1973 with total page 1052 pages. Available in PDF, EPUB and Kindle. Book excerpt: