Details

Autor(en) / Beteiligte

• Bazlov, N. V.
• Bakhlanov, S. V.
• Derbin, A. V.
• Drachnev, I. S.
• Izegov, G. A.
• Kotina, I. M.
• Muratova, V. N.
• Niyazova, N. V.
• Semenov, D. A.
• Trushin, M. V.
• Unzhakov, E. V.
• Chmel, E. A.

Titel

A Change in the Parameters of Si(Li) Detectors under Exposure to α Particles

Ist Teil von

• Instruments and experimental techniques (New York), 2020, Vol.63 (1), p.25-29

Ort / Verlag

Moscow: Pleiades Publishing

Erscheinungsjahr

2020

Quelle

SpringerLink

Beschreibungen/Notizen

• — A spectrometer based on a Si(Li) detector has been tested by exposure to α particles with the aim of determining changes in the detector characteristics versus the fluence. As a result of 60-day measurements with a total fluence of 6.2 × 10 9 α particles, it has been established that the dependence of the deterioration in the energy resolution of α-particle peaks on the fluence is described by a linear function with a slope of Δσ/ΔФ = (8.4 ± 0.4) × 10 –10 keV/α. The measured amplitude of the α-particle momentum decreases linearly with increasing fluence with a slope of (–4.8 ± 0.6) × 10 –9 keV/α. These effects do not prevent reliable discrimination between the signals from α particles and fission fragments until the fluence reaches a value of 10 10 α particles when the Si(Li) detector is a part of a neutron source for detecting fission fragments .