TY - GEN
T1 - Correlations in prompt neutrons and gamma-rays from Cf-252 spontaneous fission
AU - Marcath, M. J.
AU - Shin, T. H.
AU - Fulvio, A. Di
AU - Clarke, S. D.
AU - Pozzi, S. A.
N1 - Publisher Copyright:
© The Authors, published by EDP Sciences, 2017.
PY - 2017/9/13
Y1 - 2017/9/13
N2 - New event-by-event fission models have prompt neutrons and gamma-rays that are correlated in time, energy, and multiplicity, however there is limited measurement data available to validate these models. Measurement of high-order fission neutron and gamma-ray coincidences is difficult and there has previously been little motivation to measure properties of both particle types simultaneously. High-order Cf-252 spontaneous fission neutron and gamma-ray coincidences were measured with a cylindrical array of 22 liquid organic and 8 NaI(Tl) scintillation detectors, 50 cm from a central axis. Waveforms were acquired and saved for post-processing using four time-synchronized CAEN V1720 digitizers. Liquid organic scintillator waveforms were analyzed with off-line pulse shape discrimination techniques to categorize neutron and gamma-ray detections. Detected multiplicity was compared with MCNPX-PoliMi simulation results, where built-in fission models and event-by-event fission models, CGMF and FREYA, have been implemented. Additionally, measured neutron energy by time-of-flight and gamma-ray energy correlated by detected multiplicity were compared to simulated results.
AB - New event-by-event fission models have prompt neutrons and gamma-rays that are correlated in time, energy, and multiplicity, however there is limited measurement data available to validate these models. Measurement of high-order fission neutron and gamma-ray coincidences is difficult and there has previously been little motivation to measure properties of both particle types simultaneously. High-order Cf-252 spontaneous fission neutron and gamma-ray coincidences were measured with a cylindrical array of 22 liquid organic and 8 NaI(Tl) scintillation detectors, 50 cm from a central axis. Waveforms were acquired and saved for post-processing using four time-synchronized CAEN V1720 digitizers. Liquid organic scintillator waveforms were analyzed with off-line pulse shape discrimination techniques to categorize neutron and gamma-ray detections. Detected multiplicity was compared with MCNPX-PoliMi simulation results, where built-in fission models and event-by-event fission models, CGMF and FREYA, have been implemented. Additionally, measured neutron energy by time-of-flight and gamma-ray energy correlated by detected multiplicity were compared to simulated results.
UR - http://www.scopus.com/inward/record.url?scp=85030455635&partnerID=8YFLogxK
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U2 - 10.1051/epjconf/201714604038
DO - 10.1051/epjconf/201714604038
M3 - Conference contribution
AN - SCOPUS:85030455635
T3 - EPJ Web of Conferences
BT - ND 2016
A2 - Siegler, Peter
A2 - Mondelaers, Wim
A2 - Plompen, Arjan
A2 - Hambsch, Franz-Josef
A2 - Schillebeeckx, Peter
A2 - Kopecky, Stefan
A2 - Heyse, Jan
A2 - Oberstedt, Stephan
PB - EDP Sciences
T2 - 2016 International Conference on Nuclear Data for Science and Technology, ND 2016
Y2 - 11 September 2016 through 16 September 2016
ER -