University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Anomalies in the Charge Yields of Fission Fragments from the U(n,f)238 Reaction

Wilson, J. N., Lebois, M., Qi, L., Amador-Celdran, P., Bleuel, D., Briz, J. A., Carroll, R., Catford, Wilton, De Witte, H., Doherty, D. T., Eloirdi, R., Georgiev, G., Gottardo, A., Goasduff, A., Hadyńska-Klęk, K., Hauschild, K., Hess, H., Ingeberg, V., Konstantinopoulos, T., Ljungvall, J., Lopez-Martens, A., Lorusso, G., Lozeva, R., Lutter, R., Marini, P., Matea, I., Materna, T., Mathieu, L., Oberstedt, A., Oberstedt, S., Panebianco, S., Podolyak, Zsolt, Porta, A., Regan, Patrick, Reiter, P., Rezynkina, K., Rose, S. J., Sahin, E., Seidlitz, M., Serot, O., Shearman, Robert, Siebeck, B., Siem, S., Smith, A. G., Tveten, G. M., Verney, D., Warr, N., Zeiser, F. and Zielinska, M. (2017) Anomalies in the Charge Yields of Fission Fragments from the U(n,f)238 Reaction Physical Review Letters, 118 (22). pp. 222501-1.

[img]
Preview
Text
Anomalies in the Charge Yields.pdf - Version of Record
Available under License Creative Commons Attribution.

Download (321kB) | Preview

Abstract

Fast-neutron-induced fission of 238U at an energy just above the fission threshold is studied with a novel technique which involves the coupling of a high-efficiency γ-ray spectrometer (MINIBALL) to an inverse-kinematics neutron source (LICORNE) to extract charge yields of fission fragments via γ−γ coincidence spectroscopy. Experimental data and fission models are compared and found to be in reasonable agreement for many nuclei; however, significant discrepancies of up to 600% are observed, particularly for isotopes of Sn and Mo. This indicates that these models significantly overestimate the standard 1 fission mode and suggests that spherical shell effects in the nascent fission fragments are less important for low-energy fast-neutron-induced fission than for thermal neutron-induced fission. This has consequences for understanding and modeling the fission process, for experimental nuclear structure studies of the most neutron-rich nuclei, for future energy applications (e.g., Generation IV reactors which use fast-neutron spectra), and for the reactor antineutrino anomaly.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Wilson, J. N.UNSPECIFIEDUNSPECIFIED
Lebois, M.UNSPECIFIEDUNSPECIFIED
Qi, L.UNSPECIFIEDUNSPECIFIED
Amador-Celdran, P.UNSPECIFIEDUNSPECIFIED
Bleuel, D.UNSPECIFIEDUNSPECIFIED
Briz, J. A.UNSPECIFIEDUNSPECIFIED
Carroll, R.UNSPECIFIEDUNSPECIFIED
Catford, WiltonW.Catford@surrey.ac.ukUNSPECIFIED
De Witte, H.UNSPECIFIEDUNSPECIFIED
Doherty, D. T.UNSPECIFIEDUNSPECIFIED
Eloirdi, R.UNSPECIFIEDUNSPECIFIED
Georgiev, G.UNSPECIFIEDUNSPECIFIED
Gottardo, A.UNSPECIFIEDUNSPECIFIED
Goasduff, A.UNSPECIFIEDUNSPECIFIED
Hadyńska-Klęk, K.UNSPECIFIEDUNSPECIFIED
Hauschild, K.UNSPECIFIEDUNSPECIFIED
Hess, H.UNSPECIFIEDUNSPECIFIED
Ingeberg, V.UNSPECIFIEDUNSPECIFIED
Konstantinopoulos, T.UNSPECIFIEDUNSPECIFIED
Ljungvall, J.UNSPECIFIEDUNSPECIFIED
Lopez-Martens, A.UNSPECIFIEDUNSPECIFIED
Lorusso, G.UNSPECIFIEDUNSPECIFIED
Lozeva, R.UNSPECIFIEDUNSPECIFIED
Lutter, R.UNSPECIFIEDUNSPECIFIED
Marini, P.UNSPECIFIEDUNSPECIFIED
Matea, I.UNSPECIFIEDUNSPECIFIED
Materna, T.UNSPECIFIEDUNSPECIFIED
Mathieu, L.UNSPECIFIEDUNSPECIFIED
Oberstedt, A.UNSPECIFIEDUNSPECIFIED
Oberstedt, S.UNSPECIFIEDUNSPECIFIED
Panebianco, S.UNSPECIFIEDUNSPECIFIED
Podolyak, ZsoltZ.Podolyak@surrey.ac.ukUNSPECIFIED
Porta, A.UNSPECIFIEDUNSPECIFIED
Regan, PatrickP.Regan@surrey.ac.ukUNSPECIFIED
Reiter, P.UNSPECIFIEDUNSPECIFIED
Rezynkina, K.UNSPECIFIEDUNSPECIFIED
Rose, S. J.UNSPECIFIEDUNSPECIFIED
Sahin, E.UNSPECIFIEDUNSPECIFIED
Seidlitz, M.UNSPECIFIEDUNSPECIFIED
Serot, O.UNSPECIFIEDUNSPECIFIED
Shearman, Robertr.shearman@surrey.ac.ukUNSPECIFIED
Siebeck, B.UNSPECIFIEDUNSPECIFIED
Siem, S.UNSPECIFIEDUNSPECIFIED
Smith, A. G.UNSPECIFIEDUNSPECIFIED
Tveten, G. M.UNSPECIFIEDUNSPECIFIED
Verney, D.UNSPECIFIEDUNSPECIFIED
Warr, N.UNSPECIFIEDUNSPECIFIED
Zeiser, F.UNSPECIFIEDUNSPECIFIED
Zielinska, M.UNSPECIFIEDUNSPECIFIED
Date : 1 June 2017
Funders : Science and Technology Facilities Council (STFC)
Identification Number : https://doi.org/10.1103/PhysRevLett.118.222501
Copyright Disclaimer : © 2017 American Physical Society. This is the published version of the following article: J.M. Wilson et al, 'Anomalies in the Charge Yields of Fission Fragments from the U(n,f)238 Reaction', in Physical Review Letters 118:22, 222501, which has been published at http://dx.doi.org/10.1103/PhysRevLett.118.222501. This article may be used under the terms of the Creative Commons Attribution license 4.0 for non-commercial purposes in accordance with the publisher's Terms and Conditions for Self-Archiving. See: https://journals.aps.org/open_access.html for details.
Depositing User : Clive Harris
Date Deposited : 08 Jun 2017 10:55
Last Modified : 08 Jun 2017 10:57
URI: http://epubs.surrey.ac.uk/id/eprint/841338

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800