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arXiv · 1910.02439

Monte Carlo N-Particle simulations of an underwater chemical threats detection system using neutron activation analysis

P. Sibczyński·M. Silarski·O. Bezshyyko·V. Ivanyan·E. Kubicz·Sz. Niedźwiecki·P. Moskal·J. Raj·S. Sharma·O. Trofimiuk
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Abstract

In this paper we present Monte Carlo N-Particle (MCNP) simulations of the system for underwater threat detection using neutron activation analysis developed in the SABAT project. The simulated system is based on a D-T neutron generator emitting 14~MeV neutrons without associated $\alpha$ particle detection and equipped with a LaBr$_3$:Ce scintillation detector offering superior energy resolution and allowing for precise identification of activation $\gamma$ quanta. The performed simulations show that using the neutron activation analysis method with the designed geometry we are able to identify $\gamma$-rays from hydrogen, carbon, sulphur and chlorine originating from mustard gas in a sea water environment. Our results show that the most efficient way of mustard gas detection is to compare the integral peak ratio for Cl and H.

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P. Sibczyński, M. Silarski, O. Bezshyyko, V. Ivanyan, E. Kubicz, Sz. Niedźwiecki, P. Moskal, J. Raj, S. Sharma, O. Trofimiuk. 2019-10-06. Monte Carlo N-Particle simulations of an underwater chemical threats detection system using neutron activation analysis. https://doi.org/10.1088/1748-0221/14/09/p09001

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