TY - GEN
T1 - Study of fission using multi-nucleon transfer reactions
AU - Nishio, Katsuhisa
AU - Hirose, Kentaro
AU - Vermeulen, Mark
AU - Makii, Hiroyuki
AU - Orlandi, Riccardo
AU - Tsukada, Kazuaki
AU - Asai, Masato
AU - Toyoshima, Atsushi
AU - Sato, Tetsuya K.
AU - Nagame, Yuichiro
AU - Chiba, Satoshi
AU - Aritomo, Yoshihiro
AU - Tanaka, Shouya
AU - Ohtsuki, Tsutomu
AU - Tsekhanovich, Igor
AU - Petrache, Costel M.
AU - Andreyev, Andrei
N1 - Funding Information:
Special thanks are due to the crew of the JAEA tandem facility for their beam operation. Present study is supported by “Comprehensive study of delayed-neutron yields for accurate evaluation of kinetics of high-burn up reactors” and "Development of prompt-neutron measurement in fission by surrogate reaction method and evaluation of neutron-energy spectra" by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).
Publisher Copyright:
© The Authors, published by EDP Sciences, 2018.
PY - 2018/3/6
Y1 - 2018/3/6
N2 - Multi-nucleon transfer channels of the reactions of 18O+232Th, 18O+238U, 18O+248Cm were used to measure fission-fragment mass distribution for various nuclides and their excitation energy dependence. Predominantly asymmetric fission is observed at low excitation energies for all the studied cases, with an increase of the symmetric fission towards high excitation energies. Experimental data are compared with predictions of the fluctuation-dissipation model, where effects of multi-chance fission (neutron evaporation prior to fission) was introduced. It was shown that a reliable understanding of the observed fission fragment mass distributions can be obtained only invoking multi-chance fissions.
AB - Multi-nucleon transfer channels of the reactions of 18O+232Th, 18O+238U, 18O+248Cm were used to measure fission-fragment mass distribution for various nuclides and their excitation energy dependence. Predominantly asymmetric fission is observed at low excitation energies for all the studied cases, with an increase of the symmetric fission towards high excitation energies. Experimental data are compared with predictions of the fluctuation-dissipation model, where effects of multi-chance fission (neutron evaporation prior to fission) was introduced. It was shown that a reliable understanding of the observed fission fragment mass distributions can be obtained only invoking multi-chance fissions.
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U2 - 10.1051/epjconf/201816900013
DO - 10.1051/epjconf/201816900013
M3 - Conference contribution
AN - SCOPUS:85043988615
T3 - EPJ Web of Conferences
BT - Scientific Workshop on "Nuclear Fission and the Emission of Prompt Neutrons and Gamma Rays", THEORY 2017
A2 - Hambsch, Franz-Josef
A2 - Carjan, Nicolae
A2 - Ruskov, Ivan
PB - EDP Sciences
T2 - 4th Scientific Workshop on Nuclear Fission Dynamics and the Emission of Prompt Neutrons and Gamma Rays, THEORY 2017
Y2 - 20 June 2017 through 22 June 2017
ER -