First results of the experiment to search for 2β decay of 106Cd with 106CdWO4 crystal scintillator in coincidence with four crystals HPGe detector

被引：4

作者：

Tretyak, V. I. ^{[1
]}

Belli, P. ^{[2
]}

Bernabei, R. ^{[2
,3
]}

Brudanin, V. B. ^{[4
]}

Cappella, F. ^{[5
,6
]}

Caracciolo, V. ^{[7
]}

Cerulli, R. ^{[7
]}

Chernyak, D. M. ^{[1
]}

Danevich, F. A. ^{[1
]}

D'Angelo, S. ^{[2
,3
]}

Incicchitti, A. ^{[5
]}

Laubenstein, M. ^{[7
]}

Mokina, V. M. ^{[1
]}

Poda, D. V. ^{[1
]}

Polischuk, O. G. ^{[1
,6
]}

Podviyanuk, R. B. ^{[1
]}

Tupitsyna, I. A. ^{[8
]}

机构：

[1] Inst Nucl Res, MSP, UA-03680 Kiev, Ukraine

[2] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy

[3] INFN Sez Roma Tor Vergata, I-00133 Rome, Italy

[4] Joint Inst Nucl Res, Dubna 141980, Russia

[5] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[6] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy

[7] Ist Nazl Fis Nucl, Laboratori Nazionali Gran Sasso, I-67100 Assergi, AQ, Italy

[8] Inst Scintillat Mat, UA-61001 Kharkiv, Ukraine

来源：

RPSCINT 2013 - INTERNATIONAL WORKSHOP ON RADIOPURE SCINTILLATORS | 2014年 / 65卷

关键词：

DOUBLE-BETA-DECAY;

D O I：

10.1051/epjconf/20136501004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

An experiment to search for double beta processes in Cd-106 by using cadmium tungstate crystal scintillator enriched in Cd-106 ((CdWO4)-Cd-106) in coincidence with the four crystals HPGe detector GeMulti is in progress at the STELLA facility of the Gran Sasso underground laboratory of INFN (Italy). The (CdWO4)-Cd-106 scintillator is viewed by a low-background photomultiplier tube through a lead tungstate crystal light-guide produced from deeply purified archaeological lead to suppress gamma quanta from the photomultiplier tube. Here we report the first results of the experiment after 3233 hours of the data taking. A few new improved limits on double beta processes in Cd-106 are obtained, in particular T-1/2(2 nu epsilon beta+) >= 8.4 x 10(20) yr at 90% C.L.

引用

页数：4

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