LXX International conference "NUCLEUS – 2020. Nuclear physics and elementary particle physics. Nuclear physics technologies"

Segmented semi-conductor spectrometer for studying of α-β-γ angular correlations in 4π-geometry

Not scheduled

25m

Online

Oral report Section 3. Modern nuclear physics methods and technologies. Will not participate

Speaker

D. Ponomarev (Dzhelepov Laboratory of Nuclear Problems, JINR, Joliot-Curie 6, 141980 Dubna, Russia)

Description

New semi-conductor spectrometer dedicated to study of α-β-γ angular correlations in 4π-geometry was created in close cooperation between JINR and Baltic Scientific Instruments. The main part of the spectrometer is an HPGe detector that has a segmented N-area with six segments. Each of the segments has an energy resolution (FWHM) better than 1 keV for the energy 122 keV (γ– line of Co-57) and better than 2 keV for the energy 1332 keV (γ– line of Co-60). The HPGe crystal has cylindrical coaxially drilled hole in the middle. Diameter of the through hole is 23 mm. The through hole and the crystal segmentation allow investigate γγ-coincidences in near 4π-geometry. Sensitive volume of the HPGe detector is 70 cm${^\text{3}}$, diameter and height of the crystal are 50 mm. Second part of the spectrometer is segmented Si-detecstrong texttor placed in the through hole. It is gives an opportunity to study coincidences of γ– quanta with α– and β– particles.
This work was supported by the grant AYSS 20-203-04.
The work was partly supported by RFBR grant N 18-02-00159 А.