Abstract
We have studied neutron response of the PARIS phoswich [LaBr\(_3\)(Ce)-NaI(Tl)] detector which is being developed for measuring the high-energy (E\(_{\gamma }\) = 5–30 MeV) \(\gamma \) rays emitted from the decay of highly collective states in atomic nuclei. The relative neutron detection efficiency of LaBr\(_3\)(Ce) and NaI(Tl) crystals of the phoswich detector have been measured using the time-of-flight (TOF) and pulse shape discrimination (PSD) technique in the energy range of E\(_n\) = 1–9 MeV and compared with the GEANT4-based simulations. It has been found that for E\(_n\) > 3 MeV, \(\sim \)95 % of neutrons have the primary interaction in the LaBr\(_3\)(Ce) crystal, indicating that a clear \(\text {n}-\gamma \) separation can be achieved even at \(\sim \)15 cm flight path.
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Acknowledgements
We would like to thank Mr. K. V. Divekar for assistance with the setup. We would also like to thank the PARIS collaboration for their support.
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Dey, B. et al. (2018). Neutron Response of PARIS Phoswich Detector. In: Biswas, S., Das, S., Ghosh, S. (eds) Advanced Detectors for Nuclear, High Energy and Astroparticle Physics. Springer Proceedings in Physics, vol 201. Springer, Singapore. https://doi.org/10.1007/978-981-10-7665-7_18
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DOI: https://doi.org/10.1007/978-981-10-7665-7_18
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