STUDY OF NEUTRINO AND DARK-MATTER BY HIGH-SENSITIVITY BETA-BETA,GAMMA AND X-RAY SPECTROMETER ELEGANTS

被引：1

作者：

EJIRI, H ^{[1
]}

FUSHIMI, K ^{[1
]}

HAZAMA, R ^{[1
]}

KUDOMI, N ^{[1
]}

KUME, K ^{[1
]}

NAGATA, K ^{[1
]}

OHSUMI, H ^{[1
]}

OKADA, K ^{[1
]}

TANAKA, J ^{[1
]}

ZDESENKO, Y ^{[1
]}

机构：

[1] INR,KIEV,UKRAINE

来源：

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, VOL 32: NEUTRINOS IN COSMOLOGY, ASTRO, PARTICLE AND NUCLEAR PHYSICS | 1994年 / 32卷

关键词：

BETA-GAMMA SPECTROMETER ELEGANTS V; DOUBLE BETA DECAYS OF MO-100 AND CD-116; DARK MATTER SEARCH BY ELASTIC AND INELASTIC SCATTERING OF NUCLEI;

D O I：

10.1016/0146-6410(94)90014-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Nuclear and particle rare decay and weak processes were studied by high sensitivity beta-gamma and X ray spectrometer ELEGANTS V. A finite value of half life for the two neutrino double beta. decay of Mo-100 (T-1/2(2 upsilon) = 1.15(-0.20)(+0.30) x 10(19)yr) and the lower limit 1/2 for neutrino less double beta decay (TP1/20 upsilon > 7 x 10(21)yr) for Mo-100 were obtained. Double beta. decays of Cd-116 has also been studied. The preliminary half life for the two neutrino double beta decay (T-1/2(2 upsilon) = 2.6(-0.6)(+1.3) X 10(19)yr) and the lower limit for neutrino less double beta decay (T-1/2(0 upsilon) > 1.1 x 10(21)yr) were obtained. The large 1/2 volume NaI(Tl) scintillators in ELEGANTS V have been applied to search for cosmic cold dark matter candidates. The elastic scattering and inelastic scattering of dark matter and the nuclei in the NaI(Tl) scintillator were studied. The low back ground (similar or equal to 5/day/KeV/kg) and low noise (similar or equal to 5keV) experiment was successfully done and stringent limit on the local density of dark matter candidates was given.

引用

页码：119 / 130

页数：12

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