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Title: Proton light yield in organic scintillators using a double time-of-flight technique

Abstract

Recent progress in the development of novel organic scintillators necessitates modern characterization capabilities. As the primary means of energy deposition by neutrons in these materials is n-p elastic scattering, knowledge of the proton light yield is paramount. This work establishes a new model-independent method to continuously measure the proton light yield in organic scintillators over a broad energy range. Using a deuteron breakup neutron source at the 88-in. Cyclotron at Lawrence Berkeley National Laboratory and an array of organic scintillators, the proton light yield of EJ-301 and EJ-309, commercially available organic liquid scintillators from Eljen Technology, was measured via a double time-of-flight technique. The light yield was determined using a kinematically over-constrained system in the proton energy range of 1–20 MeV. The effect of the pulse integration length on the magnitude and shape of the proton light yield relation was also explored. In conclusion, this work enables accurate simulation of the performance of advanced neutron detectors and supports the development of next-generation neutron imaging systems.

Authors:
 [1];  [1];  [1];  [1];  [2];  [3];  [3];  [4];  [4];  [4]
  1. Univ. of California, Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Publication Date:
Research Org.:
Univ. of California, Berkeley, CA (United States). Nuclear Science and Security Consortium; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation
OSTI Identifier:
1462111
Alternate Identifier(s):
OSTI ID: 1461237; OSTI ID: 1470704
Report Number(s):
LLNL-JRNL-757607
Journal ID: ISSN 0021-8979
Grant/Contract Number:  
NA0003180; NA0000979; NA0003100; AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 124; Journal Issue: 4; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Brown, J. A., Goldblum, Bethany L., Laplace, T. A., Harrig, K. P., Bernstein, L. A., Bleuel, D. L., Younes, W., Reyna, D., Brubaker, E., and Marleau, P. Proton light yield in organic scintillators using a double time-of-flight technique. United States: N. p., 2018. Web. doi:10.1063/1.5039632.
Brown, J. A., Goldblum, Bethany L., Laplace, T. A., Harrig, K. P., Bernstein, L. A., Bleuel, D. L., Younes, W., Reyna, D., Brubaker, E., & Marleau, P. Proton light yield in organic scintillators using a double time-of-flight technique. United States. doi:10.1063/1.5039632.
Brown, J. A., Goldblum, Bethany L., Laplace, T. A., Harrig, K. P., Bernstein, L. A., Bleuel, D. L., Younes, W., Reyna, D., Brubaker, E., and Marleau, P. Mon . "Proton light yield in organic scintillators using a double time-of-flight technique". United States. doi:10.1063/1.5039632. https://www.osti.gov/servlets/purl/1462111.
@article{osti_1462111,
title = {Proton light yield in organic scintillators using a double time-of-flight technique},
author = {Brown, J. A. and Goldblum, Bethany L. and Laplace, T. A. and Harrig, K. P. and Bernstein, L. A. and Bleuel, D. L. and Younes, W. and Reyna, D. and Brubaker, E. and Marleau, P.},
abstractNote = {Recent progress in the development of novel organic scintillators necessitates modern characterization capabilities. As the primary means of energy deposition by neutrons in these materials is n-p elastic scattering, knowledge of the proton light yield is paramount. This work establishes a new model-independent method to continuously measure the proton light yield in organic scintillators over a broad energy range. Using a deuteron breakup neutron source at the 88-in. Cyclotron at Lawrence Berkeley National Laboratory and an array of organic scintillators, the proton light yield of EJ-301 and EJ-309, commercially available organic liquid scintillators from Eljen Technology, was measured via a double time-of-flight technique. The light yield was determined using a kinematically over-constrained system in the proton energy range of 1–20 MeV. The effect of the pulse integration length on the magnitude and shape of the proton light yield relation was also explored. In conclusion, this work enables accurate simulation of the performance of advanced neutron detectors and supports the development of next-generation neutron imaging systems.},
doi = {10.1063/1.5039632},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 4,
volume = 124,
place = {United States},
year = {2018},
month = {7}
}

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