Experimental determination of cross-talk between neutron detectors

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Abstract

Neutron cross-talk measurements have been performed with 14.1 MeV neutrons for organic scintillator detectors with n-γ discrimination capability. The probability for cross-talk between two 156 mm thick neutron detectors with a hexagonal cross section (effective diameter 167 mm) placed 0.33 m apart was found to be (2.5±1.1) 10−4. A similar measurement between two 100 mm thick, cylindrically shaped detectors with 50 mm diameter and at 75 mm distance from each other yielded a cross-talk probability of (2.5±0.4) 10−3. The measured cross-talk probabilities are in agreement with values from a Monte Carlo calculation.

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