Calculation Of Neutron Cross Sections On Iron Between 3 And 40 Mev Hauser Feshbach Model
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Release | : 1979 |
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Download Calculation of Neutron Cross Sections on Iron Between 3 and 40 MeV. [Hauser-Feshbach Model]. Book in PDF, Epub and Kindle
The use of high energy d+Li sources to produce neutrons for radiation damage studies will require evaluated neutron cross sections up to energies of 40 MeV. Experimental data in this energy region are scarce, and reliance must be placed upon nuclear model calculations to provide the necessary cross sections. We have thus calculated neutron-induced cross sections on 54Fe and 56Fe between 3 and 40 MeV using the multistep preequilibrium Hauser-Feshbach model code GNASH. Special care was taken in the determination of optical model parameters applicable over this wide energy range through use of, and comparison to, neutron total cross section and elastic angular distribution data, (p, n), and (.cap alpha., n) data, as well as other high energy proton induced reaction cross sections and spectral results. The preequilibrium-statistical calculations using these parameters as well as gamma-ray strength functions, level densities, and discrete level information reproduce well most available experimental measurements above 3 MeV for varied reaction types including gamma-ray production data. 12 references.
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Release | : 1980 |
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Download Calculation of Neutron Cross Sections on Iron Up to 40 MeV. Book in PDF, Epub and Kindle
The development of high energy d + Li neutron sources for fusion materials radiation damage studies will require neutron cross sections up to 40 MeV. Experimental data above 15 MeV are generally sparse or nonexistent, and reliance must be placed upon nuclear-model calculations to produce the needed cross sections. To satisfy such requirements for the Fusion Materials Irradiation Test Facility (FMIT), neutron cross sections have been calculated for 54 56Fe between 3 and 40 MeV. These results were joined to the existing ENDF/B-V evaluation below 3 MeV. In this energy range, most neutron reactions can be described using the Hauser-Feshbach statistical model with corrections for preequilibrium and direct-reaction effects. To properly use these models to obtain realistic cross sections, emphasis must be placed upon the determination of suitable input parameters (optical model sets, gamma-ray strength functions, level densities) valid over the energy range of the calculation. To do this, several types of independent data were used to arrive at consistent parameter sets as described.
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Release | : 1980 |
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Download Evaluation of Neutron Cross Sections to 40 MeV for 54 56Fe Book in PDF, Epub and Kindle
Cross sections for neutron-induced reactions on 54 56Fe were calculated by employing several nuclear models: optical, Hauser-Feshbach, preequilibrium and DWBA - in the energy range between 3 and 40 MeV. As a prelude to the calculations, the necessary input parameters were determined or verified through analysis of a large body of experimental data for both neutron- and proton-induced reactions in this mass and energy region. This technique also led to cross sections in which the simultaneous influence of available data types added to their consistency and reliability. Calculated cross sections as well as neutron and gamma-ray emission spectra were incorporated into an ENDF evaluation suitable for use to 40 MeV. 12 figures, 1 table.
Author | : M. R. Bhat |
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Total Pages | : 470 |
Release | : 1980 |
Genre | : Fast neutrons |
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Download Symposium on Neutron Cross-sections from 10 to 50 MeV Book in PDF, Epub and Kindle
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Total Pages | : 1344 |
Release | : 1988 |
Genre | : Power resources |
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Download Energy Research Abstracts Book in PDF, Epub and Kindle
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Total Pages | : 912 |
Release | : 1976-04 |
Genre | : Nuclear energy |
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Download Nuclear Science Abstracts Book in PDF, Epub and Kindle
Author | : K. Gul |
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Total Pages | : 8 |
Release | : 1995 |
Genre | : Neutron cross sections |
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Download Hauser-Feshbach Calculations of Neutron-induced Reaction Cross Sections for 52Cr in 6-20 MeV Neutron Energy Range Book in PDF, Epub and Kindle
Author | : Syed M. Qaim |
Publisher | : Springer Science & Business Media |
Total Pages | : 1041 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 3642581137 |
Download Nuclear Data for Science and Technology Book in PDF, Epub and Kindle
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.
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Total Pages | : 1064 |
Release | : 1968 |
Genre | : Metric system |
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Total Pages | : 1068 |
Release | : 1983-10 |
Genre | : Science |
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