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Elastic scattering of 96 MeV neutrons from iron, yttrium, and lead
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Neutron Research, Applied Nuclear Physics.
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2008 (English)In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 77, no 2, 024605- p.Article in journal (Refereed) Published
Abstract [en]

Data on elastic scattering of 96 MeV neutrons from Fe-56, Y-89, and Pb-208 in the angular interval 10-70 degrees are reported. The previously published data on Pb-208 have been extended, as a new method has been developed to obtain more information from data, namely to increase the number of angular bins at the most forward angles. A study of the deviation of the zero-degree cross section from Wick's limit has been performed. It was shown that the data on Pb-208 are in agreement with Wick's limit while those on the lighter nuclei overshoot the limit significantly. The results are compared with modern optical model predictions, based on phenomenology and microscopic nuclear theory. The data on Fe-56, Y-89, and Pb-208 are in general in good agreement with the model predictions.

Place, publisher, year, edition, pages
2008. Vol. 77, no 2, 024605- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-96693DOI: 10.1103/PhysRevC.77.024605ISI: 000253764600035OAI: oai:DiVA.org:uu-96693DiVA: diva2:171351
Available from: 2008-02-08 Created: 2008-02-08 Last updated: 2012-07-10Bibliographically approved
In thesis
1. Neutron Scattering at 96 MeV
Open this publication in new window or tab >>Neutron Scattering at 96 MeV
2008 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Data on elastic scattering of 96 MeV neutrons from 56Fe, 89Y and 208Pb in the angular interval 10-70° are presented. The previously published data on 208Pb have been extended, as a new method has been developed to obtain additional information at the most forward angles. The results are compared with phenomenological and microscopic optical potentials. The theory predictions are in general in good agreement with the experimental data.

A study of the deviation of the zero-degree cross section from Wick's limit has been performed. The data on 208Pb are in agreement with Wick's limit, while those on lighter nuclei overshoot the limit significantly.

A novel analysis method has been developed to obtain the inelastic neutron emission cross sections from the existing 56Fe data. The method is based on folding a trial spectrum with the response of the detector setup. The data cover the angular interval 26-65° and an excitation energy range of 0-45 MeV, ranges hitherto not studied. The results are compared with nuclear model predictions and found to be in good agreement with the experimental data.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2008. 52 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 389
Keyword
Nuclear physics, neutron, elastic scattering, inelastic scattering, differential cross section, optical model potential, Wick's limit, angular distribution, pre-equilibrium, Kärnfysik
National Category
Physical Sciences
Identifiers
urn:nbn:se:uu:diva-8425 (URN)978-91-554-7079-1 (ISBN)
Public defence
2008-02-29, Häggsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 10:15 (English)
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Supervisors
Available from: 2008-02-08 Created: 2008-02-08 Last updated: 2009-04-29Bibliographically approved

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Blomgren, JanAtac, AyseGustavsson, CeciliaPomp, StephanWolniewicz, PeterÖsterlund, MichaelNilsson, LeifProkofiev, A. V.

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Blomgren, JanAtac, AyseGustavsson, CeciliaPomp, StephanWolniewicz, PeterÖsterlund, MichaelNilsson, LeifProkofiev, A. V.
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Applied Nuclear PhysicsThe Svedberg LaboratoryDepartment of Radiation Sciences
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Physical Review C. Nuclear Physics
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