Evaluation Of Fission Cross Sections And Covariances 233u 235u 238u 239pu 240pu And 241pu PDF Download
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Total Pages | : 88 |
Release | : 2000 |
Genre | : Cross sections (Nuclear physics) |
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Download Evaluation of Fission Cross Sections and Covariances 233U, 235U, 238U, 239Pu, 240Pu, and 241Pu Book in PDF, ePub and Kindle
Author | : Toshihiko Kawano |
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Total Pages | : 0 |
Release | : 2000 |
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Download Evaluation of fission cross sections and covariances for 233U, 235U, 238U, 239Pu, 240Pu, and 241Pu Book in PDF, ePub and Kindle
Author | : P. H. White |
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Total Pages | : 23 |
Release | : 1966 |
Genre | : Cross sections |
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Download The Fission Cross Sections of 233U, 234U, 237Np, 239Pu, 240Pu and 241 Pu Relative to that of 235U for Neutrons in the Energy Range 1 MeV to 14 MeV Book in PDF, ePub and Kindle
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Release | : 1986 |
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Download The Fission Cross Sections of 23°Th, 232Th, 233U, 234U, 236U, 238U, 237Np, 239Pu and 242Pu Relative 235U at 14. 74 MeV Neutron Energy Book in PDF, ePub and Kindle
The measurement of the fission cross section ratios of nine isotopes relative to 235U at an average neutron energy of 14.74 MeV is described with particular attention to the determination of corrections and to sources of error. The results are compared to ENDF/B-V and to other measurements of the past decade. The ratio of the neutron induced fission cross section for these isotopes to the fission cross section for 235U are: 23°Th - 0.290 +- 1.9%; 232Th - 0.191 +- 1.9%; 233U - 1.132 +- 0.7%; 234U - 0.998 +- 1.0%; 236U - 0.791 +- 1.1%; 238U - 0.587 +- 1.1%; 237Np - 1.060 +- 1.4%; 239Pu - 1.152 +- 1.1%; 242Pu - 0.967 +- 1.0%. 40 refs., 11 tabs., 9 figs.
Author | : E. J. Axton |
Publisher | : |
Total Pages | : 38 |
Release | : 1986 |
Genre | : Californium |
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Download Evaluation of the Thermal Constants of 233U, 235U, 239Pu and 241Pu, and the Fission Neutron Yield of 252Cf Book in PDF, ePub and Kindle
Author | : R. L. G. Keith |
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Total Pages | : 21 |
Release | : 1968 |
Genre | : Cross sections |
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Download A Measurement of the Fission Cross Sections of 233U, 235U and 239Pu Book in PDF, ePub and Kindle
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Total Pages | : |
Release | : 1987 |
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Download The Fission Cross Section Ratios and Error Analysis for Ten Thorium, Uranium, Neptunium and Plutonium Isotopes at 14. 74 MeV Neutron Energy Book in PDF, ePub and Kindle
The error information from the recent measurements of the fission cross section ratios of nine isotopes, 23°Th, 232Th, 233U, 234U, 236U, 238U, 237Np, 239Pu, and 242Pu, relative to 235U at 14.74 MeV neutron energy was used to calculate their correlations. The remaining 36 non-trivial and non-reciprocal cross section ratios and their errors were determined and compared to evaluated (ENDF/B-V) values. There are serious differences but it was concluded that the reduction of three of the evaluated cross sections would remove most of them. The cross sections to be reduced are 23°Th - 13%, 237Np - 9.6% and 239Pu - 7.6%. 5 refs., 6 tabs.
Author | : W. Hart |
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Total Pages | : 11 |
Release | : 1967 |
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Download Fission Cross Section Data Files for 232Th, 233U, 234U, 235U, 236U, 238U, 237Nb, 239Pu, 241Pu and 242Pu in the Energy Range I KeV to 14 MeV Book in PDF, ePub and Kindle
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Total Pages | : |
Release | : 1975 |
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Download Neutron-induced Fission Cross Sections of 233U, 234U, 236U, and 238U with Respect to 235U. Book in PDF, ePub and Kindle
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Release | : 1979 |
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Download Evaluation of the Fission and Capture Cross Sections of [sup]240[/sup]Pu; and [sup]241[/sup]Pu for ENDF/B-V. [10/sup -5/ EV to 20 MeV]. Book in PDF, ePub and Kindle
Since there were appreciable new data which were not available for ENDF/B-IV, new evaluations for /sup 240/Pu and /sup 241/Pu were carried out for ENDF/B-V. The evaluation of the fission and capture cross sections is reviewed and problem areas are discussed. The neutron energy range of concern was from 10/sup -5/ eV to 20 MeV. Significant changes were made over the entire neutron energy region because of the new experimental data available. The problems in the evaluations due to discrepancies in the nuclear data are emphasized, particularly the 1-eV resonance in /sup 240/Pu and the 0.3-eV resonance in /sup 241/Pu. The evaluation of the fission and capture cross sections for ENDF/B-V represents an improvement over the previous evaluation; however, there continues to be a need for accurate experimental data. 7 figures.