The MULTI spectrometer for measurement of beta-decay process in exotic nuclei

Kód výsledku v IS VaVaI

RIV/61389005:_____/21:00557384 - isvavai.cz

Výsledek na webu

http://dx.doi.org/10.1051/epjconf/202125301003

DOI - Digital Object Identifier

10.1051/epjconf/202125301003

Jazyk výsledku

angličtina

Název v původním jazyce

The MULTI spectrometer for measurement of beta-decay process in exotic nuclei

Popis výsledku v původním jazyce

The construction of the portable spectrometer, MULTI, is designed for the measurement of beta-gamma-neutron coincidences on beams of radioactive exotic nuclei. It will be used in measurements of the beta-decay process of neutron-rich nuclei with large Q(beta) 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 Co-60 source are presented. Design of the neutron counter array, consisting of 40 proportional counters filled with He-3 gas, was optimized with Monte Carlo simulations. Results were validated with a Cf-252 spectroscopic source, leading to expected detection efficiency of similar to 35% for neutrons with energy < 1MeV. Further development plans are discussed.

Název v anglickém jazyce

The MULTI spectrometer for measurement of beta-decay process in exotic nuclei

Popis výsledku anglicky

The construction of the portable spectrometer, MULTI, is designed for the measurement of beta-gamma-neutron coincidences on beams of radioactive exotic nuclei. It will be used in measurements of the beta-decay process of neutron-rich nuclei with large Q(beta) 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 Co-60 source are presented. Design of the neutron counter array, consisting of 40 proportional counters filled with He-3 gas, was optimized with Monte Carlo simulations. Results were validated with a Cf-252 spectroscopic source, leading to expected detection efficiency of similar to 35% for neutrons with energy < 1MeV. Further development plans are discussed.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

LTT18021: Spolupráce ČR s SÚJV Dubna v teoretické a jaderné fyzice a při využití jaderných metod v dalších oborech

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

EPJ Web of Conferences

ISBN

—

ISSN

2100-014X

e-ISSN

—

Počet stran výsledku

6

Strana od-do

01003

Název nakladatele

E D P Sciences

Místo vydání

Les Ulis

Místo konání akce

Prague

Datum konání akce

21. 6. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000788459400003