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Title: Measurement of prompt fission neutron spectrum for spontaneous fission of Cf 252 using γ multiplicity tagging

The prompt fission neutron spectrum from spontaneous fission of 252Cf is an integral part of several aspects of nuclear data. Not only is the spectrum itself of interest, but neutron detectors often use the spectrum for calibration, and other prompt fission neutron spectra are measured as a ratio to 252Cf. Therefore, reducing the uncertainties in this spectrum will allow for more accurate nuclear data to be available across a wide range of fields. The prompt fission neutron spectrum for the spontaneous fission of 252Cf was measured at Rensselaer Polytechnic Institute using the multiple γ tagging method with a 18.4-ng fission sample. An EJ-301 liquid scintillator fast neutron detector was used to measure the high energy portion of the spectrum, 0.5–7 MeV, and a thin EJ-204 plastic scintillator was used to measure the low energy portion of the spectrum, from 50 keV to 2 MeV. These spectra both show good agreement with the current evaluation of 252Cf and have low associated uncertainties providing a new high precision measurement that helps reduce the uncertainties in the prompt fission neutron spectrum for the spontaneous fission of 252Cf.
Authors:
 [1] ;  [1] ;  [1] ;  [1]
  1. Rensselaer Polytechnic Inst., Troy, NY (United States)
Publication Date:
Grant/Contract Number:
NA0001814
Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 95; Journal Issue: 6; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Research Org:
Rensselaer Polytechnic Inst., Troy, NY (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
OSTI Identifier:
1465743

Blain, E., Daskalakis, A., Block, R. C., and Danon, Y.. Measurement of prompt fission neutron spectrum for spontaneous fission of Cf252 using γ multiplicity tagging. United States: N. p., Web. doi:10.1103/PhysRevC.95.064615.
Blain, E., Daskalakis, A., Block, R. C., & Danon, Y.. Measurement of prompt fission neutron spectrum for spontaneous fission of Cf252 using γ multiplicity tagging. United States. doi:10.1103/PhysRevC.95.064615.
Blain, E., Daskalakis, A., Block, R. C., and Danon, Y.. 2017. "Measurement of prompt fission neutron spectrum for spontaneous fission of Cf252 using γ multiplicity tagging". United States. doi:10.1103/PhysRevC.95.064615. https://www.osti.gov/servlets/purl/1465743.
@article{osti_1465743,
title = {Measurement of prompt fission neutron spectrum for spontaneous fission of Cf252 using γ multiplicity tagging},
author = {Blain, E. and Daskalakis, A. and Block, R. C. and Danon, Y.},
abstractNote = {The prompt fission neutron spectrum from spontaneous fission of 252Cf is an integral part of several aspects of nuclear data. Not only is the spectrum itself of interest, but neutron detectors often use the spectrum for calibration, and other prompt fission neutron spectra are measured as a ratio to 252Cf. Therefore, reducing the uncertainties in this spectrum will allow for more accurate nuclear data to be available across a wide range of fields. The prompt fission neutron spectrum for the spontaneous fission of 252Cf was measured at Rensselaer Polytechnic Institute using the multiple γ tagging method with a 18.4-ng fission sample. An EJ-301 liquid scintillator fast neutron detector was used to measure the high energy portion of the spectrum, 0.5–7 MeV, and a thin EJ-204 plastic scintillator was used to measure the low energy portion of the spectrum, from 50 keV to 2 MeV. These spectra both show good agreement with the current evaluation of 252Cf and have low associated uncertainties providing a new high precision measurement that helps reduce the uncertainties in the prompt fission neutron spectrum for the spontaneous fission of 252Cf.},
doi = {10.1103/PhysRevC.95.064615},
journal = {Physical Review C},
number = 6,
volume = 95,
place = {United States},
year = {2017},
month = {6}
}