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Author : P. F. Rose
Publisher :
ISBN 13 :
Total Pages : 424 pages
Book Rating : 4.:/5 (64 download)
Download or read book Endf/B Fission Product Decay Data written by P. F. Rose and published by . This book was released on 1977 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ENDF/B Fission-product Data written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In recognition of the pressing need for nuclear decay data in a variety of reactor-related applications, the scope of the Evaluated Nuclear Data Files (ENDF/B) was expanded to include such information. The initial reason for this expansion was to provide reliable data and a common data base to be used in computer codes developed to carry out summation calculations of the decay-heat source term in reactor cores. The ENDF/B-V fission product file was released in July 1980 and contains data for 877 nuclides. Forty-two of these are found in greater detail on the General Purpose file. Seven hundred and fifty isotopes contain decay data. One hundred and ninety-six contain cross section data for total, elastic, inelastic, and angular distributions in the energy range 10−5 eV to 20 MeV. This special fission product file is contained on 6 magnetic tapes, and is available from the National Nuclear Data Center (NNDC) at BNL. (WHK).
Download or read book Integral Data Testing of ENDF/B Fission-product Data and Comparisons of ENDF/B with Other Fission Product Data Files written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Three experiments (one from Oak Ridge and two from Los Alamos), in which samples of 235U and 238Pu were irradiated with thermal neutrons and either the total, gamma-ray, or gamma- and beta-ray fission product decay-energies were measured as functions of cooling time, were selected for comparisons with calculations made using four different fission product data files. The data files used were (1) the ENDF/B-IV fission product file, (2) the ENDF/B-V fission product file, (3) a file derived by substituting decay energies from JNDC into the ENDF/B-V file, and (4) a file derived by substituting decay-energies and spectra from the UK data file into the ENDF/B-V file. Direct summation calculations and spectral comparisons of the experiments were made using these data files as input, and both types of calculational analyses yielded the same results; namely, all data files are deficient, but the JNDC-ENDF/B-V results for the gamma- and beta-ray total decay-energy agree best with experiments. In addition, spectral comparisons with experiment generally indicate that calculated gamma-ray decay-energies are relatively high for early cooling times and small gamma-ray energies; they are low for early cooling times and large gamma-ray energies. The opposite is somewhat the case for the beta-ray decay energies; that is, the calculations are generally low for small beta-ray energies and high for large energies.
Author : Syed M. Qaim
Publisher : Springer Science & Business Media
ISBN 13 : 3642581137
Total Pages : 1041 pages
Book Rating : 4.6/5 (425 download)
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.
Download or read book Investigation of Inconsistent ENDF/B-VII. 1 Independent and Cumulative Fission Product Yields with Proposed Revisions written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A recent implementation of ENDF/B-VII. independent fission product yields and nuclear decay data identified inconsistencies in the data caused by the use of updated nuclear scheme in the decay sub-library that is not reflected in legacy fission product yield data. Recent changes in the decay data sub-library, particularly the delayed neutron branching fractions, result in calculated fission product concentrations that are incompatible with the cumulative fission yields in the library, and also with experimental measurements. A comprehensive set of independent fission product yields was generated for thermal and fission spectrum neutron induced fission for 235,238U and 239,241Pu in order to provide a preliminary assessment of the updated fission product yield data consistency. These updated independent fission product yields were utilized in the ORIGEN code to evaluate the calculated fission product inventories with experimentally measured inventories, with particular attention given to the noble gases. An important outcome of this work is the development of fission product yield covariance data necessary for fission product uncertainty quantification. The evaluation methodology combines a sequential Bayesian method to guarantee consistency between independent and cumulative yields along with the physical constraints on the independent yields. This work was motivated to improve the performance of the ENDF/B-VII. 1 library in the case of stable and long-lived cumulative yields due to the inconsistency of ENDF/B-VII. 1 fission p;roduct yield and decay data sub-libraries. The revised fission product yields and the new covariance data are proposed as a revision to the fission yield data currently in ENDF/B-VII. 1.
Download or read book PEFPYD written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. Tobias
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book UKFPDD-2 written by A. Tobias and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. Katakura
Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (787 download)
Download or read book Augmentation of ENDF/B Fission Product Gamma-ray Spectra by Calculated Spectra written by J. Katakura and published by . This book was released on 1991 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Atomic Energy of Canada Limited
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (562 download)
Download or read book Expanded Fission Product Accumulation Program Using Endf/b-v Decay Data written by Atomic Energy of Canada Limited and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Los Alamos Scientific Laboratory
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (674 download)
Download or read book The Application of a Library of Processed ENDF/B-IV Fission-product Aggregate Decay Data in the Calculation of Decay-energy Spectra written by Los Alamos Scientific Laboratory and published by . This book was released on 1978 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ENDF/B-IV Fission-product Files written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The major fission-product parameters [sigma/sub th/, RI, tau12, E- bar/sub $beta$/, E-bar/sub [gamma]/, E-bar/sub $alpha$/, decay and (n, $gamma$) branching, Q, and AWR] abstracted from ENDF/B-IV files for 824 nuclides are summarized. These data are most often requested by users concerned with reactor design, reactor safety, dose, and other sundry studies. The few known file errors are corrected to date. Tabular data are listed by increasing mass number. (auth).
Author : W. H. Walker
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.:/5 (946 download)
Download or read book FISSPROD-3 written by W. H. Walker and published by . This book was released on 1982 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William H. Walker
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (158 download)
Download or read book The Use of Averages and Other Summation Quantities in the Testing of Evaluated Fission Product Yield and Decay Data written by William H. Walker and published by . This book was released on 1976 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. H. Walker
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (159 download)
Download or read book FISSPROD-3 written by W. H. Walker and published by . This book was released on 1982 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ORIGEN Sample Problem Using Fission Product File Derived from ENDF/B-IV Fission Product Decay Data written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The ORIGEN code solves the equations of radioactive growth and decay; it allows continuous first-order chemical processing and a neutron flux described by a three-region spectrum. Complex decay and transmutation schemes can be treated. This user's manual contains some informal notes on the ORIGEN code; a copy of ORNL-4628, which describes the code and its use; and a library of ORIGEN yields and cross sections, with accompanying notes. (RWR).
Author : W. L. Bunch
Publisher :
ISBN 13 :
Total Pages : 90 pages
Book Rating : 4.3/5 (91 download)
Download or read book Fission Product Inventory and Decay Heat Associated with FTR Fuel written by W. L. Bunch and published by . This book was released on 1969 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fission product inventory and the decay heat associated with driver fuel irradiated to goal exposure (45,000 MWd per metric ton) in the Fast Test Reactor is presented, based on calculations using the computer code RIBD with a nuclear data library prepared for the FTR environment. Curie inventories as a function of decay time are given for each of about 350 isotopes or isomeric states generated by the fast-neutron induced fission of either 239Pu or 238U, by down-chain decay, or by subsequent neutron capture. Beta, gamma, and total decay power are given in percent of operating power for decay times from 1 sec to about 10 years. Uncertainty in the decay heat calculations, based on propagation of the uncertainties associated with input nuclear data, is estimated. The uncertainty is calculated to be less than +̲ 10% for the first 10 days, and less than +̲ 20% over a 10-yr decay period.
Author : William Herbert Walker
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.:/5 (159 download)
Download or read book FISSPROD-3 written by William Herbert Walker and published by . This book was released on 1982 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
