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Possible anisotropy in the emission of fission fragments
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
IRMM-JRC-EC.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
IRMM-JRC-EC.
2012 (English)In: Conference: 13th international conference on nuclear reaction mechanisms, At Villa Monastero, Varenna, Italy, Volume: pp. 223-225 / [ed] F. Cerutti, 2012, 223-225 p.Conference paper, Published paper (Refereed)
Abstract [en]

This study on 234U(n,f) focused on the vibrational resonance at the incident neutron energy En=770 keV. Due to the strong angular anisotropy, Fluctuations of the fission fragment (FF) properties were predicted. The bipolar angular anisotropy was verified in this work and a possible new correlation to anisotropic FF emission has been observed. The mass distribution was found to have the biggest difference in asymmetry, at the vibrational resonance and was less asymmetric in emission along the axis of the beam direction. A corresponding anisotropy in the total kinetic energy was also observed. The observed effect was consistent with the change in the mass distribution. At last, the experimental data were fitted based on the Multi-Modal Random Neck Rupture (MM-RNR) model. The yield of the standard-1 mode was found to increase at the resonance.

Place, publisher, year, edition, pages
2012. 223-225 p.
Keyword [en]
Fission
National Category
Natural Sciences
Research subject
Physics with specialization in Applied Nuclear Physics
Identifiers
URN: urn:nbn:se:uu:diva-287596OAI: oai:DiVA.org:uu-287596DiVA: diva2:922977
Conference
13th international conference on nuclear reaction mechanisms, Varenna, Italy,
Available from: 2016-04-25 Created: 2016-04-25 Last updated: 2016-04-25

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