Neutrino-Less Double Beta Decay Experiment Using Ca 100MoO4 Scintillation Crystals

被引：34

作者：

Kim, H. J. ^{[1
]}

Annenkov, A. N. ^{[2
]}

Boiko, R. S. ^{[3
]}

Buzanov, O. A. ^{[6
]}

Chernyak, D. M. ^{[3
]}

Cho, J. H. ^{[4
,5
]}

Danevich, F. A. ^{[3
]}

Dossovitsky, A. E. ^{[8
]}

Rooh, Gul ^{[1
]}

Kang, U. K. ^{[7
]}

Kim, M. J. ^{[1
]}

Kim, S. C. ^{[4
,5
]}

Kim, S. K. ^{[4
,5
]}

Kim, Y. D. ^{[7
]}

Kobychev, V. V. ^{[3
]}

Kornoukhov, V. N. ^{[9
]}

Kosmyna, M. B. ^{[10
]}

Lee, S. J. ^{[4
,5
]}

Lee, J. I. ^{[7
]}

Lee, J. H. ^{[4
,5
]}

Myung, S. S. ^{[4
,5
]}

Nazarenko, B. P. ^{[10
]}

Nikolaiko, A. S. ^{[3
]}

Podviyanuk, R. B. ^{[3
]}

Puzikov, V. M. ^{[10
]}

Shekhovtsov, A. N. ^{[10
]}

So, J. H. ^{[1
]}

Solskii, I. ^{[11
]}

Tretyak, V. I. ^{[3
]}

Veresnikova, A. V. ^{[12
]}

机构：

[1] Kyungpook Natl Univ, Dept Phys, Taegu 702701, South Korea

[2] Moscow Steel & Alloy Inst, Moscow 119049, Russia

[3] Ukrainian Acad Sci, Inst Nucl Res, UA-252028 Kiev, Ukraine

[4] Seoul Natl Univ, DMRC, Seoul 151742, South Korea

[5] Seoul Natl Univ, Sch Phys & Astron, Seoul 151742, South Korea

[6] JSC Fomos Mat, Moscow 107023, Russia

[7] Sejong Univ, Dept Phys, Seoul 143747, South Korea

[8] Inst Chem Reagents & Very Pure Subst, Moscow 107076, Russia

[9] Inst Theoret & Expt Phys, Moscow 117218, Russia

[10] Inst Single Crystals, UA-61001 Kharkov, Ukraine

[11] SRC Carat, Inst Mat, UA-79031 Lvov, Ukraine

[12] RAS, Inst Nucl Res, Moscow 117246, Russia

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2010年 / 57卷 / 03期

关键词：

CaMoO4; double beta decay; energy resolution; internal background; isotopic enrichment; MAJORANA NEUTRINOS; MATRIX-ELEMENTS; SEARCH; DETECTOR; MO-100; CA-48; MASS;

D O I：

10.1109/TNS.2010.2043264

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Search for neutrino-less double beta decay of Mo-100 is proposed using active method with Ca (MoO4)-Mo-100 scintillation crystals which show the brightest scintillation light among variety of inorganic scintillation materials containing Mo. Study of X-ray luminescence and scintillation properties such as energy response, number of photoelectrons/keV, absolute light yield, decay time, pulse shape discrimination and radioactive contamination of CaMoO4 crystals grown by the Czochralski method with different conditions are presented. Further R&D of resolution optimization, crystal quality improvement and background reduction are underway. Significant improvement of sensitivity to neutrino-less double beta decay can be achieved by using Mo-100 enriched Ca (MoO4)-Mo-100 crystals with good energy resolution and low background. Further reduction of background induced by Ca-48 two neutrino double beta decay can be achieved by using Ca-48 depletion. We are planning to install several kilograms of Ca (MoO4)-Mo-100 crystals depleted in Ca-48 at underground laboratory for the neutrino-less double beta decay experiment in the near future.

引用

页码：1475 / 1480

页数：6

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