Published July 2000 | Version v1
Journal article Metadata-only

Double-beta decay of 48Ca in the TGV experiment

Creators

  • 1. Joint Inst. for Nuclear Research, Dubna (Russian Federation)
  • 2. Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse, Orsay (France)
  • 3. Czech Technical Univ., Faculty of Nuclear Science and Physical Engineering, Prague (Czech Republic)

Description

The low-background, high-sensitivity Ge multi-detector spectrometer TVG was used to study the double-beta decay of 48Ca. Additional suppression of the registered background was achieved with a neutron shielding and a method of distinguishing β-particles from γ-rays by detector pulse rise time. The estimates T1/2ββ2ν = (4.2 ±2.4) x 1019 yr and T1/2ββ0ν > 1.5 x 1021 yr (90% C.L.) for the double-beta decay of 48Ca were obtained

Abstract (Russian)

Низкошумовой высокочувствительный Ge мультидетектор использовался для двойного бета-распада 48Ca. Дополнительное подавление зарегистрированного шума было достигнуто нейтронным экранированием и методом различия β-частиц из γ-лучей с помощью времени возрастания импульсного детектора. Получены оценки T1/2ββ2ν = (4.2 ±2.4) x 1019 лет и T1/2ββ0ν > 1.5 x 1021 лет (90% - лабораторные условия) для двойного-бета распада 48Ca

Additional details

Publishing Information

Journal Title
Yadernaya Fizika
Journal Volume
63
Journal Issue
7
Journal Page Range
p. 1292-1295
ISSN
0044-0027
CODEN
IDFZA7

Conference

Title
2. international conference on Nonaccelerator new physics
Original Conference Title
Materialy vtoroj mezhdunarodnoj konferentsii Novaya fizika v neuskoritel'nykh ehksperimentakh
Dates
28 Jun - 3 Jul 1999
Place
Dubna (Russian Federation)

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
32021836
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CALCIUM 48; DIAGRAMS; DOUBLE BETA DECAY; GAMMA DETECTION; GAMMA SPECTRA; NUCLEAR STRUCTURE
Descriptors DEC
ALKALINE EARTH ISOTOPES; BETA DECAY; BETA-MINUS DECAY; CALCIUM ISOTOPES; DECAY; DETECTION; EVEN-EVEN NUCLEI; INFORMATION; INTERMEDIATE MASS NUCLEI; ISOTOPES; NUCLEAR DECAY; NUCLEI; RADIATION DETECTION; SPECTRA; STABLE ISOTOPES

Optional Information

Notes
10 refs., 5 figs.