Abstract—
The shape of pulses produced in a 3He counter by thermal neutrons has been investigated. The electronics, which consist of a charge-sensitive preamplifier and a shaping amplifier, have been developed. The measured pulse shape is compared to the result of simulation of the 3He counter signals under neutron irradiation. A new method for determining the pressure in a 3He counter is proposed that is based on measurements of the total charge-collection efficiency and the maximum effective pulse width in the counter. This method is in good agreement with the direct measurement of the pressure in a 3He counter using the transmission method.
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ACKNOWLEDGMENTS
We express gratitude to I.I. Tkachev, A.V. Feshchenko, O.V. Karavichev, and V.E. Postoev for their support and help in the work.
Funding
This work was performed using the equipment of the Accelerator Center for Neutron Studies of the Structure of Substances and Nuclear Medicine of the INR RAS collective use center with the support of the Ministry of Education and Science of the Russian Federation under the Agreement on the provision of subsidies (no. 14.621.21.0014 of August 28, 2017), unique identifier RFMEFI62117X0014.
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Translated by N. Goryacheva
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Vasilyev, I.A., Djilkibaev, R.M. & Hlustin, D.V. Investigation of the Pulse Shape in a 3He Counter under Neutron Irradiation. Instrum Exp Tech 63, 146–153 (2020). https://doi.org/10.1134/S0020441220010236
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DOI: https://doi.org/10.1134/S0020441220010236