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].
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].

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Published: 1979

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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.

Nuclear Structure Studies at Intermediate Energy. [School of Physics and Astronomy, Univ. of Minnesota].
Nuclear Structure Studies at Intermediate Energy. [School of Physics and Astronomy, Univ. of Minnesota].

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Published: 1992

Total Pages: 108

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New experimental results are given for proton elastic and inelastic cross sections for [sup 182,186]W at 650 MeV, [sup 208]Pb and [sup 60]Ni(p, t) cross sections at 120 MeV, a coincidence study of the [sup 40]Ca([rvec p],2p) reaction. In addition to the above, data reduction and analysis are also being carried out as follows: global analysis of [sup 28]Si and [sup 58]Ni([rvec p], p[prime]) data at 135, 178, 333, 500, and 800 MeV for high-spin stretched states using medium modified interactions (conventional and QCD effective mass modifications); analysis of [sup 206,207,208]Pb([rvec p], p) elastic data at 650 MeV. Work on development of techniques to study relativistic effects of proton[endash]nucleus scattering at forward angles and extended angular range of S[sub nn] measurements in [sup 40]Ca was also carried out.