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Nuclear Experiment

arXiv:1512.06731 (nucl-ex)
This paper has been withdrawn by Ricardo Yanez
[Submitted on 21 Dec 2015 (v1), last revised 12 Apr 2017 (this version, v5)]

Title:Total kinetic energy release in the fast neutron-induced fission of $^{235}$U

Authors:R. Yanez, W. Loveland, J. King, J.S. Barrett, N. Fotiades, H.Y. Lee
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Abstract:We have measured the total kinetic energy (TKE) release for the $^{235}$U(n,f) reaction for $E_{n}$=2-100 MeV using the 2E method with an array of Si PIN diode detectors. The neutron energies were determined by time of flight measurements using the white spectrum neutron beam at the LANSCE facility. (To calibrate the apparatus, the TKE release for $^{235}$U(n$_{th}$,f) was also measured using a thermal neutron beam from the OSU TRIGA reactor). The TKE decreases non-linearly from 169.0 MeV to 161.4 MeV for $E_{n}$=2-90 MeV. The standard deviation of the TKE distribution is constant from $E_{n}$=20-90 MeV. Comparison of the data with the multi-modal fission model of Brosa indicates the TKE decrease is a consequence of the growth of symmetric fission and the corresponding decrease of asymmetric fission with increasing neutron energy. The average TKE associated with the Brosa superlong, standard I and standard II modes for a given mass is independent of neutron energy.
Comments: Supplemental Data error column 4, TKE variance
Subjects: Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
Cite as: arXiv:1512.06731 [nucl-ex]
  (or arXiv:1512.06731v5 [nucl-ex] for this version)
  https://doi.org/10.48550/arXiv.1512.06731

Submission history

From: Ricardo Yanez [view email]
[v1] Mon, 21 Dec 2015 17:53:44 UTC (53 KB)
[v2] Mon, 28 Dec 2015 20:44:58 UTC (53 KB)
[v3] Thu, 14 Apr 2016 17:56:13 UTC (1 KB) (withdrawn)
[v4] Tue, 31 May 2016 16:07:31 UTC (1 KB) (withdrawn)
[v5] Wed, 12 Apr 2017 15:13:34 UTC (1 KB) (withdrawn)
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