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arXiv · 2104.04684

Measurement of the Ionization Yield of Neutron-Induced Proton Recoils in Tetramethylsilane

Shuoxing Wu·Brian Lenardo·Giorgio Gratta
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Abstract

We report on a low energy measurement of the ionization yield in a Tetramethylsilane Time Projection Chamber (TPC) using 2.8 MeV neutrons from a deuterium-deuterium neutron generator. The proton recoil charge yield is measured at four different electric fields, finding a dependence that is well described by the Thomas-Imel model. By comparing the proton recoil yield to that obtained from $\gamma$-ray calibrations, a quenching factor is obtained for each electric field. These results demonstrate the feasibility of using room temperature organic ionisation detectors to detect MeV-scale neutrons in the proton-recoil channel.

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Shuoxing Wu, Brian Lenardo, Giorgio Gratta. 2021-04-10. Measurement of the Ionization Yield of Neutron-Induced Proton Recoils in Tetramethylsilane. https://doi.org/10.1088/1748-0221/16/07/p07053

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