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Improved Neutron Capture Data And Evaluation With Statistical Nuclear Structure Models For Transport Libraries
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Book Synopsis Improved Neutron Capture Data and Evaluation with Statistical Nuclear Structure Models for Transport Libraries by : Bradley William Sleaford
Download or read book Improved Neutron Capture Data and Evaluation with Statistical Nuclear Structure Models for Transport Libraries written by Bradley William Sleaford and published by ProQuest. This book was released on 2007 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neutron Capture Gamma-Ray Libraries for Nuclear Applications by :
Download or read book Neutron Capture Gamma-Ray Libraries for Nuclear Applications written by and published by . This book was released on 2010 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The neutron capture reaction is useful in identifying and analyzing the gamma-ray spectrum from an unknown assembly as it gives unambiguous information on its composition. this can be done passively or actively where an external neutron source is used to probe an unknown assembly. There are known capture gamma-ray data gaps in the ENDF libraries used by transport codes for various nuclear applications. The Evaluated Gamma-ray Activation file (EGAF) is a new thermal neutron capture database of discrete line spectra and cross sections for over 260 isotopes that was developed as part of an IAEA Coordinated Research project. EGAF is being used to improve the capture gamma production in ENDF libraries. For medium to heavy nuclei the quasi continuum contribution to the gamma cascades is not experimentally resolved. The continuum contains up to 90% of all the decay energy and is modeled here with the statistical nuclear structure code DICEBOX. This code also provides a consistency check of the level scheme nuclear structure evaluation. The calculated continuum is of sufficient accuracy to include in the ENDF libraries. This analysis also determines new total thermal capture cross sections and provides an improved RIPL database. For higher energy neutron capture there is less experimental data available making benchmarking of the modeling codes more difficult. They are investigating the capture spectra from higher energy neutrons experimentally using surrogate reactions and modeling this with Hauser-Feshbach codes. This can then be used to benchmark CASINO, a version of DICEBOX modified for neutron capture at higher energy. This can be used to simulate spectra from neutron capture at incident neutron energies up to 20 MeV to improve the gamma-ray spectrum in neutron data libraries used for transport modeling of unknown assemblies.
Book Synopsis Capture Gamma-Ray Libraries for Nuclear Applications by :
Download or read book Capture Gamma-Ray Libraries for Nuclear Applications written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The neutron capture reaction is useful in identifying and analyzing the gamma-ray spectrum from an unknown assembly as it gives unambiguous information on its composition. This can be done passively or actively where an external neutron source is used to probe an unknown assembly. There are known capture gamma-ray data gaps in the ENDF libraries used by transport codes for various nuclear applications. The Evaluated Gamma-ray Activation file (EGAF) is a new thermal neutron capture database of discrete line spectra and cross sections for over 260 isotopes that was developed as part of an IAEA Coordinated Research Project. EGAF has been used to improve the capture gamma production in ENDF libraries. For medium to heavy nuclei the quasi continuum contribution to the gamma cascades is not experimentally resolved. The continuum contains up to 90percent of all the decay energy an is modeled here with the statistical nuclear structure code DICEBOX. This code also provides a consistency check of the level scheme nuclear structure evaluation. The calculated continuum is of sufficient accuracy to include in the ENDF libraries. This analysis also determines new total thermal capture cross sections and provides an improved RIPL database. For higher energy neutron capture there is less experimental data available making benchmarking of the modeling codes more difficult. We use CASINO, a version of DICEBOX that is modified for this purpose. This can be used to simulate the neutron capture at incident neutron energies up to 20 MeV to improve the gamma-ray spectrum in neutron data libraries used for transport modelling of unknown assemblies.
Book Synopsis Development and Benchmarking of Higher Energy Neutron Transport Data Libraries by :
Download or read book Development and Benchmarking of Higher Energy Neutron Transport Data Libraries written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutron cross-section evaluations covering the energy range from 10/sup /minus/11/ to 100 MeV have been prepared for several materials. The principal method used to generate this data base has employed statistical-preequilibrium nuclear models, sophisticated phase shift analyses, and R-matrix techniques. The library takes advantage of formats developed for Version 6 of the Evaluated Nuclear Data File, ENDF. Methods to efficiently utilize the ENDF/B-VI representation of this library in the MCNP Monte Carlo code have been developed. MCNP results using the new library have been compared with calculated results using codes or data based upon intranuclear cascade models. 7 refs., 8 figs.
Book Synopsis Evaluation of the Sensitivity of Neutron Capture Rates to the Modeling of Statistical Nuclear Properties, and Impact to Nucleosynthesis by : Stylianos Nikas
Download or read book Evaluation of the Sensitivity of Neutron Capture Rates to the Modeling of Statistical Nuclear Properties, and Impact to Nucleosynthesis written by Stylianos Nikas and published by . This book was released on 2017 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neutron Nuclear Data Evaluation by : International Atomic Energy Agency
Download or read book Neutron Nuclear Data Evaluation written by International Atomic Energy Agency and published by . This book was released on 1973 with total page 148 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. This book was released on 2006-04-04 with total page 1373 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Atlas of Neutron Resonances provides detailed information on neutron resonances, thermal neutron cross sections, and average resonance properties which are important to neutron physicist, astrophysicists, solid state physicists, reactor engineers, scientists involved in activation analysis, and evaluators of neutron cross sections. · Compilation and evaluation of the world's thermal neutron cross-sections and resonance parameters for neutron physicists, reactor engineers, and neutron evaluators.· Compilation and evaluation of coherent scattering lengths for solid state physicists and evaluators· Compilation and evaluation of average 30-keV capture cross sections for astrophysicists.· Nuclear level density parameters derived from average spacings of neutron resonances following a new approach (new feature for this edition).· Brief review of sub-threshold fission.· Comparisons of optical model predictions with neutron strength function data and scattering lengths.· Estimation of average E1 radiative widths on the basis of the generalized Landau-Fermi liquid model (a new feature for this edition).
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 1288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nuclear Physics and Applications by : Dugersuren Dashdorj
Download or read book Nuclear Physics and Applications written by Dugersuren Dashdorj and published by American Institute of Physics. This book was released on 2009-04-16 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This conference was motivated by the worldwide increase of use of nuclear energy for electricity. Mongolia plans to use its substantial uranium resources with further intentions for installation of a nuclear power reactor. This was the first international conference in Mongolia devoted to nuclear science to help in this effort. Attendees included participants from more than dozen countries as well as scientists in Mongolia. The conference proceedings book includes technical papers in basic nuclear science (of studies for understanding atomic nucleus) and in various nuclear science applications such as nuclear power reactors.
Book Synopsis Nuclear Data for Science and Technology by : Syed M. Qaim
Download or read book Nuclear Data for Science and Technology written by Syed M. Qaim and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1041 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the Proceedings of the International Conference on Nuclear Data for Science and Technology held at Jillich in May 1991. The conference was in a series of application oriented nuclear data conferences organized in the past under the auspices of the Nuclear Energy Agency-Nuclear Data Committee (NEANDC) and with the support of the Nuclear Energy Agency-Committee on Reactor Physics (NEACRP). It was the fIrst international conference on nuclear data held in Germany, with the scientific responsibility entrusted to the Institute of Nuclear Chemistry of the Research Centre Jillich. The scientific programme was established by the International Programme Committee in consultation with the International Advisers, and the NEA and IAEA cooperated in the organization. A total of 328 persons from 37 countries and fIve international organizations participated. The scope of these Proceedings extends to a wide range of interdisciplinary topics dealing with measu rement, calculation, evaluation and application of nuclear data, with a major emphasis on numerical data. Both energy and non-energy related applications are considered and due attention is given to some fundamental aspects relevant to the understanding of nuclear data.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Compound Nuclear Reactions and Related Topics by : American Institute of Physics
Download or read book Compound Nuclear Reactions and Related Topics written by American Institute of Physics and published by American Institute of Physics. This book was released on 2008-05 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: All papers have been peer-reviewed. Compound-nuclear reactions play a crucial role in nuclear astrophysics, nuclear energy, and national security. Although the concept of the compound nucleus dates back to the 1930s, a comprehensive, quantitative description of compound-nuclear reactions remains to be established. CNR* 2007 brought together experts in nuclear theory, experiment, and data evaluation to review current efforts aimed at understanding compound-nuclear reactions and to identify strategies for addressing open questions.
Book Synopsis Technical reports series by : Panel on Neutron Nuclear Data Evaluation (1971, Vienna)
Download or read book Technical reports series written by Panel on Neutron Nuclear Data Evaluation (1971, Vienna) and published by . This book was released on 1973 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-12 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Thermal Neutron Scattering by : Peter A. Egelstaff
Download or read book Thermal Neutron Scattering written by Peter A. Egelstaff and published by . This book was released on 1965 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Nuclear Engineering by : Dan Gabriel Cacuci
Download or read book Handbook of Nuclear Engineering written by Dan Gabriel Cacuci and published by Springer Science & Business Media. This book was released on 2010-09-14 with total page 3701 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an authoritative compilation of information regarding methods and data used in all phases of nuclear engineering. Addressing nuclear engineers and scientists at all levels, this book provides a condensed reference on nuclear engineering since 1958.
