Improvement of radiopurity level of enriched 116CdWO4 and ZnWO4 crystal scintillators by recrystallization

被引：38

作者：

Barabash, A. S. ^{[1
]}

Belli, P. ^{[2
]}

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

Borovlev, Yu. A. ^{[4
]}

Cappella, F. ^{[5
]}

Caracciolo, V. ^{[5
]}

Cerulli, R. ^{[5
]}

Danevich, F. A. ^{[6
]}

Incicchitti, A. ^{[7
,8
]}

Kobychev, V. V. ^{[6
]}

Konovalov, S. I. ^{[1
]}

Laubenstein, M. ^{[5
]}

Mokina, V. M. ^{[6
,7
]}

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

Safonova, O. E. ^{[9
]}

Shlegel, V. N. ^{[4
]}

Tretyak, V. I. ^{[6
,7
]}

Tupitsyna, I. A. ^{[10
]}

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

Zhdankov, V. N. ^{[11
]}

机构：

[1] Inst Theoret & Expt Phys, Kurchatov Inst, Natl Res Ctr, Moscow 117218, Russia

[2] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy

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

[4] Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia

[5] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67100 Assergi, AQ, Italy

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

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

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

[9] RAS, VS Sobolev Inst Geol & Mineral, Siberian Branch, Novosibirsk 630090, Russia

[10] Inst Scintillat Mat, UA-61001 Kharkov, Ukraine

[11] CML Ltd, Novosibirsk 630090, Russia

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2016年 / 833卷

关键词：

Radioactive contamination of scintillators; Low counting experiments; CdWO4 crystal scintillator; ZnWO4 crystal scintillator; DOUBLE-BETA DECAY; 2-BETA DECAY; SEARCH; CD-116; DETECTORS; GROWTH;

D O I：

10.1016/j.nima.2016.07.025

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

As low as possible radioactive contamination of a detector plays a crucial role to improve sensitivity of a double beta decay experiment. The radioactive contamination of a sample of (CdWO4)-Cd-116 crystal scintillator by thorium was reduced by a factor approximate to 10, down to the level 0.01 mBq/kg (Th-228), by exploiting the recrystallization procedure. The total alpha activity of uranium and thorium daughters was reduced by a factor approximate to 3, down to 1.6 mBq/kg. No change in the specific activity (the total alpha activity and Th-228) was observed in a sample of ZnWO4 crystal produced by recrystallization after removing approximate to 0.4 mm surface layer of the crystal. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：77 / 81

页数：5

共 28 条

[1] Probing Higgs sector CP violation with top quarks at a photon linear collider [J].

Anlauf, H ;

Bernreuther, W ;

Brandenburg, A .

PHYSICAL REVIEW D, 1995, 52 (07) :3803-3808

[2]

Armengaud E., 2016, ASTROPART PHYS UNPUB

[3]

Barabash AS, 2016, EUR PHYS J C, V76, DOI 10.1140/epjc/s10052-016-4331-2

[4] Low background detector with enriched 116CdWO4 crystal scintillators to search for double β decay of 116Cd [J].

Barabash, A. S. ;

Belli, P. ;

Bernabei, R. ;

Boiko, R. S. ;

Cappella, F. ;

Caracciolo, V. ;

Chernyak, D. M. ;

Cerulli, R. ;

Danevich, F. A. ;

Di Vacri, M. L. ;

Dossovitskiy, A. E. ;

Galashov, E. N. ;

Incicchitti, A. ;

Kobychev, V. V. ;

Konovalov, S. I. ;

Kovtun, G. P. ;

Kudovbenko, V. M. ;

Laubenstein, M. ;

Mikhlin, A. L. ;

Nisi, S. ;

Poda, D. V. ;

Podviyanuk, R. B. ;

Polischuk, O. G. ;

Shcherban, A. P. ;

Shlegel, V. N. ;

Solopikhin, D. A. ;

Stenin, Yu G. ;

Tretyak, V. I. ;

Umatov, V. I. ;

Vasiliev, Ya V. ;

Virich, V. D. .

JOURNAL OF INSTRUMENTATION, 2011, 6

[5] Investigation of ZnWO4 crystals as scintillating absorbers for direct dark matter search experiments [J].

Bavykina, Irina ;

Angloher, Godehard ;

Hauff, Dieter ;

Pantic, Emilija ;

Petricca, Federica ;

Proebst, Franz ;

Seidel, Wolfgang ;

Stodolsky, Leo .

IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2008, 55 (03) :1449-1452

[6] Search for long-lived superheavy eka-tungsten with radiopure ZnWO4 crystal scintillator [J].

Belli, P. ;

Bernabei, R. ;

Cappella, F. ;

Cerulli, R. ;

Danevich, F. A. ;

Denisov, V. Yu ;

d'Angelo, A. ;

Incicchitti, A. ;

Kobychev, V. V. ;

Poda, D. V. ;

Polischuk, O. G. ;

Tretyak, V. I. .

PHYSICA SCRIPTA, 2015, 90 (08)

[7] Final results of an experiment to search for 2β processes in zinc and tungsten with the help of radiopure ZnWO4 crystal scintillators [J].

Belli, P. ;

Bernabei, R. ;

Cappella, F. ;

Cerulli, R. ;

Danevich, F. A. ;

d'Angelo, S. ;

Incicchitti, A. ;

Kobychev, V. V. ;

Poda, D. V. ;

Tretyak, V. I. .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2011, 38 (11)

[8] Radioactive contamination of ZnWO4 crystal scintillators [J].

Belli, P. ;

Bernabei, R. ;

Cappella, F. ;

Cerulli, R. ;

Danevich, F. A. ;

Dubovik, A. M. ;

d'Angelo, S. ;

Galashov, E. N. ;

Grinyov, B. V. ;

Incicchitti, A. ;

Kobychev, V. V. ;

Laubenstein, M. ;

Nagornaya, L. L. ;

Nozzoli, F. ;

Poda, D. V. ;

Podviyanuk, R. B. ;

Polischuk, O. G. ;

Prosperi, D. ;

Shlegel, V. N. ;

Tretyak, V. I. ;

Tupitsyna, I. A. ;

Vasiliev, Ya. V. ;

Vostretsov, Yu. Ya. .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2011, 626 :31-38

[9] Progress in growth of large sized BGO crystals by the low-thermal-gradient Czochralski technique [J].

Borovlev, YA ;

Ivannikova, NV ;

Shlegel, VN ;

Vasiliev, YV ;

Gusev, VA .

JOURNAL OF CRYSTAL GROWTH, 2001, 229 (01) :305-311

[10] On the potentiality of the ZnWO4 anisotropic detectors to measure the directionality of Dark Matter [J].

Cappella, F. ;

Bernabei, R. ;

Belli, P. ;

Caracciolo, V. ;

Cerulli, R. ;

Danevich, F. A. ;

d'Angelo, A. ;

Di Marco, A. ;

Incicchitti, A. ;

Poda, D. V. ;

Tretyak, V. I. .

EUROPEAN PHYSICAL JOURNAL C, 2013, 73 (01) :1-13

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