4π spectrometer of β-decay electrons with Si(Li)-detectors

I.E. Alekseev, S.V. Bakhlanov, N.V. Bazlov, E.A. Chmel,A.V. Derbin,I.S. Drachnev, I.M. Kotina,M.S. Mikulich,V.N. Muratova,N.V. Niyazova, D.A. Semonov, M.V. Trushin,E.V. Unzhakov

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment（2023）

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摘要

We present a description of the originally developed β-spectrometer consisting of two Si(Li)-detectors with sensitive area thickness above 8 mm and 4π-geometry. The full absorption spectrometer allows for direct measurements of β-spectra, disregarding the corrections to response function induced by the electron backscattering from the crystal surface. In case of β-spectra of transitions to the excited state of the daughter isotope additional 3″ BGO-detector is used in order to detect the γ-quanta in coincidence with the pair of Si(Li)-spectrometers.

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关键词

Semiconductor detectors,Beta spectrometry

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