Study of plastic scintillators for fast neutron measurements and the potential application to neutron cameras

R. J. Hu, C. Kim, Byungsik Hong, M. Jo, K. S. Lee, Sung Keun Park, K. S. Sim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this research, we measured pulse spectra of fast neutrons in an energy range from 1 to 7 MeV by using plastic scintillators. The fast neutrons emitted by spontaneous fission decays of a 5-μCi 252Cf isotope, whose mean energy was ∼2.1 MeV, were used for the measurements of the energy-dependent pulse spectra of the fast neutrons. The neutron energies were determined by using a time-of-flight method. The gamma rays, emitted together with fission neutrons, were eliminated by applying a proper cut in the time-of-flight spectrum. Monte-Carlo simulations based on a GEANT4 program were performed to predict the neutron sensitivities and the deposit energies in the scintillators. Furthermore, we performed a feasibility study on the potential application of the plastic scintillators to the measurement of neutron tracks for searching for special nuclear materials (SNM).

Original languageEnglish
Pages (from-to)586-591
Number of pages6
JournalJournal of the Korean Physical Society
Volume54
Issue number2
DOIs
Publication statusPublished - 2009 Feb 1

Fingerprint

fast neutrons
scintillation counters
plastics
cameras
neutrons
fission
energy
pulses
isotopes
deposits
gamma rays
decay
simulation

Keywords

  • Californium
  • Fast neutrons
  • GEANT4 simulations
  • Neutron cameras
  • Plastic scintillators
  • Time-of-flight method

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Study of plastic scintillators for fast neutron measurements and the potential application to neutron cameras. / Hu, R. J.; Kim, C.; Hong, Byungsik; Jo, M.; Lee, K. S.; Park, Sung Keun; Sim, K. S.

In: Journal of the Korean Physical Society, Vol. 54, No. 2, 01.02.2009, p. 586-591.

Research output: Contribution to journalArticle

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AU - Park, Sung Keun

AU - Sim, K. S.

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AB - In this research, we measured pulse spectra of fast neutrons in an energy range from 1 to 7 MeV by using plastic scintillators. The fast neutrons emitted by spontaneous fission decays of a 5-μCi 252Cf isotope, whose mean energy was ∼2.1 MeV, were used for the measurements of the energy-dependent pulse spectra of the fast neutrons. The neutron energies were determined by using a time-of-flight method. The gamma rays, emitted together with fission neutrons, were eliminated by applying a proper cut in the time-of-flight spectrum. Monte-Carlo simulations based on a GEANT4 program were performed to predict the neutron sensitivities and the deposit energies in the scintillators. Furthermore, we performed a feasibility study on the potential application of the plastic scintillators to the measurement of neutron tracks for searching for special nuclear materials (SNM).

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