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Title: Applications of C 7LYC scintillators in fast neutron spectroscopy

Abstract

Here, the capabilities of 7Li-enriched Cs 2 7LiYCl 6 (C 7LYC) scintillation detectors for fast neutron spectroscopy are explored in benchmark experiments that exploit its excellent pulse-shape discrimination between neutrons and γ rays, and its unprecedented ≈10% energy resolution for fast neutrons in the few MeV range, obtained through the 35Cl(n,p) reaction. Energy- and angle-resolved elastic and inelastic neutron scattering cross-section measurements of 56Fe(n,n’) were performed at Los Alamos National Laboratory with a pulsed white neutron source and an array of 1" x 1" C 7LYC crystals. The results convincingly establish the utility of this dual n/γ scintillator for fast neutron spectroscopy. Intrinsic efficiency measurements of both 1" x 1" and the first ever 3" x 3" C 7LYC crystal have been initiated, using mono-energetic fast neutron beams at UMass Lowell generated via the 7Li(p,n) reaction. Finally, the spectroscopic capabilities and potential of C 7LYC are discussed in the context of developing this emerging scintillator for targeted science applications.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [3];  [3];  [3];  [3];  [3]
  1. Univ. of Massachusetts, Lowell, MA (United States). Dept. of Physics
  2. Passport Systems Inc., Billerica, MA (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Massachusetts, Lowell, MA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1477673
Report Number(s):
LA-UR-18-27738
Journal ID: ISSN 0168-9002
Grant/Contract Number:  
AC52-06NA25396; NA0001988; NA0002932; FG02-94ER40848
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; scintillator; pulse shape discrimination; fast neutron spectroscopy; neutron scattering

Citation Formats

Brown, T., Chowdhury, P., Doucet, E., Jackson, E. G., Lister, C. J., Mitchell, A. J., Morse, C., Rogers, A. M., Wilson, G. L., D’Olympia, N., Devlin, M., Fotiades, N., Gomez, J. A., Mosby, S. M., and Nelson, R. O. Applications of C7LYC scintillators in fast neutron spectroscopy. United States: N. p., 2018. Web. doi:10.1016/j.nima.2018.08.082.
Brown, T., Chowdhury, P., Doucet, E., Jackson, E. G., Lister, C. J., Mitchell, A. J., Morse, C., Rogers, A. M., Wilson, G. L., D’Olympia, N., Devlin, M., Fotiades, N., Gomez, J. A., Mosby, S. M., & Nelson, R. O. Applications of C7LYC scintillators in fast neutron spectroscopy. United States. doi:10.1016/j.nima.2018.08.082.
Brown, T., Chowdhury, P., Doucet, E., Jackson, E. G., Lister, C. J., Mitchell, A. J., Morse, C., Rogers, A. M., Wilson, G. L., D’Olympia, N., Devlin, M., Fotiades, N., Gomez, J. A., Mosby, S. M., and Nelson, R. O. Sat . "Applications of C7LYC scintillators in fast neutron spectroscopy". United States. doi:10.1016/j.nima.2018.08.082. https://www.osti.gov/servlets/purl/1477673.
@article{osti_1477673,
title = {Applications of C7LYC scintillators in fast neutron spectroscopy},
author = {Brown, T. and Chowdhury, P. and Doucet, E. and Jackson, E. G. and Lister, C. J. and Mitchell, A. J. and Morse, C. and Rogers, A. M. and Wilson, G. L. and D’Olympia, N. and Devlin, M. and Fotiades, N. and Gomez, J. A. and Mosby, S. M. and Nelson, R. O.},
abstractNote = {Here, the capabilities of 7Li-enriched Cs27LiYCl6 (C7LYC) scintillation detectors for fast neutron spectroscopy are explored in benchmark experiments that exploit its excellent pulse-shape discrimination between neutrons and γ rays, and its unprecedented ≈10% energy resolution for fast neutrons in the few MeV range, obtained through the 35Cl(n,p) reaction. Energy- and angle-resolved elastic and inelastic neutron scattering cross-section measurements of 56Fe(n,n’) were performed at Los Alamos National Laboratory with a pulsed white neutron source and an array of 1" x 1" C7LYC crystals. The results convincingly establish the utility of this dual n/γ scintillator for fast neutron spectroscopy. Intrinsic efficiency measurements of both 1" x 1" and the first ever 3" x 3" C7LYC crystal have been initiated, using mono-energetic fast neutron beams at UMass Lowell generated via the 7Li(p,n) reaction. Finally, the spectroscopic capabilities and potential of C7LYC are discussed in the context of developing this emerging scintillator for targeted science applications.},
doi = {10.1016/j.nima.2018.08.082},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {9}
}

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