Characteristics of hybrid plastic scintillators for slow neutron measurements

In this paper, we report the characteristics and the performance of the hybrid plastic scintillators for slow neutron measurements. The 10 B-doped and Gd-layered scintillators were manufactured and tested for slow and fast neutrons, and gamma rays. The slow neutrons were provided by an energy modera...

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Bibliographic Details
Main Authors: Kim, C., Hu, R.J., Ahn, S.H., Hong, B., Kim, H.C., Lee, K.S., Park, S.K., Sim, K.S., Hong, S.J., Kim, Y.J., Lee, S.J.
Format: Conference Proceeding
Language:English
Subjects:
Biomedical measurements
Gamma rays
Helium
Isotopes
Neutrons
Nuclear measurements
Physics
Plastics
Radiation detectors
Testing
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Summary:In this paper, we report the characteristics and the performance of the hybrid plastic scintillators for slow neutron measurements. The 10 B-doped and Gd-layered scintillators were manufactured and tested for slow and fast neutrons, and gamma rays. The slow neutrons were provided by an energy moderation of the fast neutrons emitted from a 0.5 Ci 252 Cf source. The energy of the slow neutrons ranged from 10 to 600 meV with a peak at 75 meV. Neutron response functions for the hybrid plastic scintillators were measured with the calibrated slow neutron flux. Furthermore, the pulse-shape analysis was performed to differentiate the slow neutrons from the gamma rays. For the 10 B-doped scintillators, the difference lying in the tail-to-total charge ratio distribution of the pulses was conductive to estimate the fraction of the gamma rays in the neutron data. However, for the Gd-layered scintillators, the difference was insignificant.
ISSN:1082-3654
2577-0829
DOI:10.1109/NSSMIC.2007.4436540