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Comparison of Neutron Detection Efficiency of a He-3 Counter and a Boron-10 Loaded Liquid Scintillator

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11 Author(s)
Swiderski, L. ; Soltan Inst. for Nucl. Studies, Otwock-Swierk, Poland ; Moszynski, M. ; Wolski, D. ; Iwanowska, J.
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Performance of a He-3 counter and a B-10 loaded liquid scintillator EJ309B5 has been studied in terms of neutron detection efficiency. The measurements were carried out in a mixed field of neutron and gamma radiation from an intense ( ~ 106 neutrons/s/4π)252Cf source. The response of both detectors to background and high intensity gamma radiation ( ~ 100 μSv/h at a detector) from a 60Co source has been measured to establish background count rate and gamma rays cut-off point, respectively. The analysis showed that the properties of a He-3 counter are significantly better than that of EJ309B5. However, it has been pointed out how to improve the performance of a liquid scintillator in order to reduce gamma radiation sensitivity.

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Nuclear Science, IEEE Transactions on  (Volume:57 ,  Issue: 5 )