Journal of the Korean Physical Society

  • 제54권2호
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  • Pages.586-591
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  • 2009
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  • 0374-4884(pISSN)
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  • 1976-8524(eISSN)
한국물리학회 (Korean Physical Society)
권호 표지

Study of Plastic Scintillators for Fast Neutron Measurements and the Potential Application to Neutron Cameras

Hu, R.J.;Kim, C.;Hong, B.;Jo, M.;Lee, K.S.;Park, S.;Sim, K.S.

  • 발행 : 20090200
⟨ 이전 논문 다음 논문 ⟩

초록

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-${\mu}Ci$ $^{252}Cf$ isotope, whose mean energy was ${\sim}2.1$ 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).

키워드

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