Monte-Carlo modeling and simulation of neutrons detection process using Boron-10

Benzaid, Djelloul; Seghour, A.; Borrás, A.

doi:10.1142/s0218301317500586

Cited by 1 publication

(1 citation statement)

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“…This configuration has the advantage of not requiring correction of the detection efficiency since the majority of the 6 Li reaction particles penetrate the silicon detector. Its other advantage is the simplicity of installation, which is practical and allows the detector to be replaced as many times as necessary with others with different thicknesses of 6 LiF films [23,24]. For protection against stray radiation, the silicon detector with the 6 LiF thin films is inserted into a Teflon cylinder (Fig.…”

Section: Measurementsmentioning

confidence: 99%

Study and Characterization of LiF Thin Film Combined with a Silicon Detector for Neutron Metrology

Brahimi¹,

Keffous

Haine

et al. 2023

Acta Phys. Pol. A

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The last decades have seen a lot of work and development on new methods of neutron detection that would replace 3 He gas-based detectors, a device widely used due to its efficiency, which is being phased out due to the scarcity of 3 He gas and its high cost. The work showed that a combination of inorganic materials (Si, 6 LiF) could represent a viable basis for the development of new generations of thermal neutron detectors. This type of device is based on a silicon detector coupled to 6 LiF thin film converters. In this work, a model has been developed based on the fabricated silicon detector with a Schottky surface barrier associated with different thicknesses of 6 LiF films. To study its behavior as a function of the different film thicknesses, the model was characterized using a thermal neutron flux from the source (AmBe-OB26). Preliminary results show that it is possible to measure low-energy neutrons with an average detection efficiency of about 1%, a sensibility of 10 ± 0.1 cps on the 3 H peak, and insensibility to gamma radiation < 10 −6 , with a thin films size of about 2 µm. In this paper, we will present a state of the art of detector design, an evaluation of its characteristics (efficiency, resolution, dead time, proper motion), and a clarification of the influence of other parameters on the shape of the spectrum, highlighting the possibility of improving its detection efficiency to make it high, with a gamma/neutron rejection capability comparable to the 3 He gas detector.

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