Neutron Elastic and Inelastic Scattering Cross Sections of 239PU PDF Download

Author: Gang Yue
Publisher:
ISBN:
Category : Elastic scattering
Languages : en
Pages : 274

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Author: A. Prince
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ISBN:
Category : Neutron cross sections
Languages : en
Pages : 56

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Author: Devereux L. Kavanagh
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Category : Neutrons
Languages : en
Pages : 162

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Category :
Languages : en
Pages :

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Differential-neutron-emission cross sections of 232Th, 233U, 235U, 238U, 239Pu and 24°Pu are measured between approx. = 1.0 and 3.5 MeV with the angle and magnitude detail needed to provide angle-integrated emission cross sections to approx.

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Category :
Languages : en
Pages :

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We have calculated cross sections for neutron-induced reactions on 239Pu between 0.001 and 5 MeV, with particular emphasis on inelastic scattering. Coupled-channel and Hauser-Feshbach statistical models were used. Within the coupled-channel calculations we employed neutron optical parameters derived from simultaneous fits to total, elastic, inelastic, and resonance data. The resulting transmission coefficients were used in Hauser-Feshbach statistical calculations having a fission channel based on a double-humped barrier representation. Barrier parameters and transition state enhancements needed to reproduce well the (n, f) cross sections between 0.001 and 5 MeV were in general agreement with those from other published analyses. Calculated compound-nucleus and direct-reaction components for inelastic scattering were combined incoherently, and the resultant cross sections agreed well with the Bruyeres-le-Chatel measurements for scattering from levels occupying the ground state rotational band. Our results are in substantial disagreement with ENDF/B-V values for these levels. We are presently performing DWBA calculations to determine direct-reaction components for states occupying higher-lying vibrational bands.

Author: Robert J. Howerton
Publisher:
ISBN:
Category : Elastic scattering
Languages : en
Pages : 28

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Author: A. B. Smith
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Category : Fast neutrons
Languages : en
Pages : 38

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Category :
Languages : en
Pages :

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The purpose of the present work is first to investigate the capabilities of a semi-microscopic optical-model potential involving fewer adjustable parameters than phenomenological models and second, to test the sensitivity of this potential to various rotational band assumptions. Our analysis of the model capabilities is performed using experimental elastic, inelastic, and total cross sections from approx. 10 keV to 15 MeV as well as neutron strength functions, and our sensitivity study is performed for the first three bands of 239Pu: 1/2(0.0), 5/2/sup +/(286 keV), and 7/2−(392 keV).

Author:
Publisher:
ISBN:
Category : Neutron cross sections
Languages : en
Pages : 150

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Author: Hans Albrecht Bethe
Publisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 132

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