Neutron cross-talk characterization of liquid organic scintillators

Tony H. Shin, Matthew J. Marcath, Angela Difulvio, Shaun D. Clarke, Sara A. Pozzi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Correlated neutrons from a Cf-252 spontaneous fission source were measured with a coincidence detection system. The system consisted of three EJ-309 cylindrical liquid scintillators (length and diameter of 7.62 cm) configured to quantify the effects of neutron cross-talk on the total observed correlated counts. Because scatter-based detectors are susceptible to neutron cross-talk, the discrimination between true correlated counts and cross-talk is significant for neutron coincidence measurements. This measurement aimed to mitigate the neutron cross-talk between detectors with adequate polyethylene shielding, and was compared to simulations. The fractional influence of cross-talk on the total observed correlated counts was 30% for neutrons above ∼0.65 MeV at a detector-source-detector angle of 30°. Furthermore, the fractional influence of neutron cross-talk increases for decreasing detector-source-detector angles at a constant detector standoff. The angular distribution of the scattered neutron was also simulated, and shows an anisotropic distribution in the scatter detector frame of reference primarily dependent on kinematics of the neutron-hydrogen scatter and the detector volume.

Original languageEnglish (US)
Title of host publication2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467398626
DOIs
StatePublished - Oct 3 2016
Externally publishedYes
Event2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015 - San Diego, United States
Duration: Oct 31 2015Nov 7 2015

Publication series

Name2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015

Other

Other2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015
CountryUnited States
CitySan Diego
Period10/31/1511/7/15

Keywords

  • Angle
  • correlated counts
  • neutron cross-talk
  • neutron scatter

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging
  • Instrumentation

Fingerprint Dive into the research topics of 'Neutron cross-talk characterization of liquid organic scintillators'. Together they form a unique fingerprint.

Cite this