Author:
Publisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 88
Book Description
Evaluation of Fission Cross Sections and Covariances 233U, 235U, 238U, 239Pu, 240Pu, and 241Pu
Author:
Publisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 88
Book Description
Publisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 88
Book Description
Evaluation of fission cross sections and covariances for 233U, 235U, 238U, 239Pu, 240Pu, and 241Pu
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
Author: P. H. White
Publisher:
ISBN:
Category : Cross sections
Languages : en
Pages : 23
Book Description
Publisher:
ISBN:
Category : Cross sections
Languages : en
Pages : 23
Book Description
The Fission Cross Sections of 23°Th, 232Th, 233U, 234U, 236U, 238U, 237Np, 239Pu and 242Pu Relative 235U at 14. 74 MeV Neutron Energy
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Evaluation of the Thermal Constants of 233U, 235U, 239Pu and 241Pu, and the Fission Neutron Yield of 252Cf
Author: E. J. Axton
Publisher:
ISBN:
Category : Californium
Languages : en
Pages : 38
Book Description
Publisher:
ISBN:
Category : Californium
Languages : en
Pages : 38
Book Description
A Measurement of the Fission Cross Sections of 233U, 235U and 239Pu
Author: R. L. G. Keith
Publisher:
ISBN:
Category : Cross sections
Languages : en
Pages : 21
Book Description
Publisher:
ISBN:
Category : Cross sections
Languages : en
Pages : 21
Book Description
The Fission Cross Section Ratios and Error Analysis for Ten Thorium, Uranium, Neptunium and Plutonium Isotopes at 14. 74 MeV Neutron Energy
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
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
Neutron-induced Fission Cross Sections of 233U, 234U, 236U, and 238U with Respect to 235U.
Review of Cross Section Data Important to the Uranium--plutonium Fuel Cycle in Thermal Reactors
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The present state of knowledge concerning the cross sections, etc., of the isotopes 235U, 238U, 239Pu, 24°Pu, and 241Pu is discussed. Most cross sections important to the design of U--Pu-fueled light-water reactors with current fuel--water ratios are known with reasonable accuracy. The three most serious discrepancies remaining are the following: the difference between integral measurements and differential calculations of 238U resonance capture, the discrepancy between irradiation experiments and other measurements of the ratio of capture to fission in 235U, and the uncertainty in the parameters of the 1 eV resonance of 24°Pu. 2 figures, 2 tables. (RWR).
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The present state of knowledge concerning the cross sections, etc., of the isotopes 235U, 238U, 239Pu, 24°Pu, and 241Pu is discussed. Most cross sections important to the design of U--Pu-fueled light-water reactors with current fuel--water ratios are known with reasonable accuracy. The three most serious discrepancies remaining are the following: the difference between integral measurements and differential calculations of 238U resonance capture, the discrepancy between irradiation experiments and other measurements of the ratio of capture to fission in 235U, and the uncertainty in the parameters of the 1 eV resonance of 24°Pu. 2 figures, 2 tables. (RWR).