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Palm-size low-level neutron sensor for radiation monitoring

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4 Author(s)
Aryaeinejad, R. ; Idaho Nat. Eng. Lab., Idaho Falls, ID, USA ; Dardenne, Y.X. ; Cole, J.D. ; Caffrey, A.J.

We have developed a new technique for the detection of neutrons in the presence of a high gamma-ray background. This was accomplished by using two lithium-loaded glass scintillators (6Li/7Li) in combination. The neutron capture reaction in 6Li has a very high Q-value which means better discrimination against gamma-ray background. The 7Li detector, on the other hand, is neutron insensitive and was used to measure separately the gamma contribution in a mixed neutron-gamma field. By subtracting this gamma contribution from the 6Li data, which is sensitive to both gamma rays and neutrons, one can obtain the pure neutron counts

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Nuclear Science, IEEE Transactions on  (Volume:43 ,  Issue: 3 )