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Title: The 235U prompt fission neutron spectrum measured by the Chi-Nu project at LANSCE

Journal Article · · EPJ Web of Conferences
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  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
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The Chi-Nu experiment aims to accurately measure the prompt fission neutron spectrum for the major actinides. At the Los Alamos Neutron Science Center (LANSCE), fission can be induced with neutrons ranging from 0.7 MeV and above. Using a two arm time-of-flight (TOF) technique, the fission neutrons are measured in one of two arrays: a 22-6Li glass array for lower energies, or a 54-liquid scintillator array for outgoing energies of 0.5 MeV and greater. Presented here are the collaboration's preliminary efforts at measuring the 235U PFNS.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Security
Grant/Contract Number:
AC52-06NA25396; AC52-07NA27344
OSTI ID:
1412887
Report Number(s):
LA-UR-16-28515; TRN: US1800394
Journal Information:
EPJ Web of Conferences, Vol. 146; ISSN 2100-014X
Publisher:
EDP SciencesCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

References (13)

Prompt Fission Neutron Spectrum Study at Lansce: Chi-Nu Project conference November 2013
Prompt fission neutron energy spectra induced by fast neutrons journal August 1995
Measurement of prompt neutron spectra from the 239 Pu( n , f ) fission reaction for incident neutron energies from 1 to 200 MeV journal January 2014
Prompt Fission Neutron Spectra of Actinides journal January 2016
Prompt fission neutron spectra from fission induced by 1 to 8 MeV neutrons on U 235 and Pu 239 using the double time-of-flight technique journal March 2011
The LANL/LLNL Prompt Fission Neutron Spectrum Program at LANSCE and Approach to Uncertainties journal January 2015
The Need for Precise and Well-documented Experimental Data on Prompt Fission Neutron Spectra from Neutron-induced Fission of 239Pu journal January 2016
Multiple-scattering Corrections to Measurements of the Prompt Fission Neutron Spectrum journal January 2015
The Prompt Fission Neutron Spectrum (PFNS) Measurement Program at LANSCE journal May 2014
Development of Neutron Detector Arrays for Neutron-Induced Reaction Measurements journal April 2013
A new method to reduce the statistical and systematic uncertainty of chance coincidence backgrounds measured with waveform digitizers journal January 2016
Development of an Array of Liquid Scintillators to Measure the Prompt Fission Neutron Spectrum at LANSCE journal May 2014
A multiple parallel-plate avalanche counter for fission-fragment detection
  • Wu, C. Y.; Henderson, R. A.; Haight, R. C.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 794 https://doi.org/10.1016/j.nima.2015.05.010
journal September 2015

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