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The MULTI spectrometer for measurement of β-decay process in exotic nuclei.
- Source :
-
EPJ Web of Conferences . 11/19/2021, Vol. 254, p1-6. 6p. - Publication Year :
- 2021
-
Abstract
- The construction of the portable spectrometer, MULTI, is designed for the measurement of β-γ-neutron coincidences on beams of radioactive exotic nuclei. It will be used in measurements of the β-decay process of neutron-rich nuclei with large Qβ values accessible in radioactive beams facilities. The experimental technique includes the measurement of the ratios between gamma-ray emission and multi-neutron emission, following beta-decay of radioactive nuclei implanted into an active target. The construction of a gamma-ray spectrometer based on high-volume CeBr3+NaI(Tl) phoswich scintillation detectors is introduced. Results of the measurements of its fundamental characteristics – total detection efficiency, peak efficiency and Compton suppression effect with a 60Co source are presented. Design of the neutron counter array, consisting of 40 proportional counters filled with 3He gas, was optimized with Monte Carlo simulations. Results were validated with a 252Cf spectroscopic source, leading to expected detection efficiency of ∼35% for neutrons with energy < 1MeV. Further development plans are discussed. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SPECTROMETERS
*EXOTIC nuclei
*GAMMA rays
*NEUTRONS
*SCINTILLATORS
Subjects
Details
- Language :
- English
- ISSN :
- 21016275
- Volume :
- 254
- Database :
- Academic Search Index
- Journal :
- EPJ Web of Conferences
- Publication Type :
- Conference
- Accession number :
- 153822705
- Full Text :
- https://doi.org/10.1051/epjconf/202125301003