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 language | English |
|---|---|
| Pages (from-to) | 586-591 |
| Number of pages | 6 |
| Journal | Journal of the Korean Physical Society |
| Volume | 54 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2009 Feb 1 |
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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 journal › Article
}
TY - JOUR
T1 - Study of plastic scintillators for fast neutron measurements and the potential application to neutron cameras
AU - Hu, R. J.
AU - Kim, C.
AU - Hong, Byungsik
AU - Jo, M.
AU - Lee, K. S.
AU - Park, Sung Keun
AU - Sim, K. S.
PY - 2009/2/1
Y1 - 2009/2/1
N2 - 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).
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).
KW - Californium
KW - Fast neutrons
KW - GEANT4 simulations
KW - Neutron cameras
KW - Plastic scintillators
KW - Time-of-flight method
UR - http://www.scopus.com/inward/record.url?scp=62149149526&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=62149149526&partnerID=8YFLogxK
U2 - 10.3938/jkps.54.586
DO - 10.3938/jkps.54.586
M3 - Article
AN - SCOPUS:62149149526
VL - 54
SP - 586
EP - 591
JO - Journal of the Korean Physical Society
JF - Journal of the Korean Physical Society
SN - 0374-4884
IS - 2
ER -