Large volume CaMoO4 scintillation crystals

Mikhail V. Korzhik; Vasily N. Kornoukhov; Oleg V. Missevitch; Andrei A. Fedorov; Alexander N. Annenkov; Oleg A. Buzanov; Andrei E. Borisevicth; Valery I. Dormenev; Alexander L. Kholmetskii; Sun Kee Kim; Youngduk Kim; Hongjoo Kim; Anna V. Bratyakina

doi:10.1109/TNS.2008.920428

Large volume CaMoO₄ scintillation crystals

Mikhail V. Korzhik, Vasily N. Kornoukhov, Oleg V. Missevitch, Andrei A. Fedorov, Alexander N. Annenkov, Oleg A. Buzanov, Andrei E. Borisevicth, Valery I. Dormenev, Alexander L. Kholmetskii, Sun Kee Kim, Youngduk Kim, Hongjoo Kim, Anna V. Bratyakina

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Several scintillation CaMoO₄ crystals with size up to 28 × 28 × 220 mm³ were grown by Czochralski method. Their scintillation properties have been evaluated. Light yield of full size crystals measured with XP2020 PMT is about 4% relative to small reference CsI(Tl) crystal. Radio luminescence spectrum under gamma-excitation contains single emission peak with maximum at 520 nm. Optical transmission spectra contain weak absorption band around 420 nm, which has almost no influence on scintillation light. This allows to produce even larger scintillation elements without deteriorating the light yield. Scintillation kinetics was measured under gamma- and alpha-particle excitation both in fast (2000 ns) and slow (200 μs) time scales. Fast components - 12 ns, (0.1%); 200 ns (0.5%) were detected along with slow - 3.8 μs (3.4%); 20 μs (96%) - components. Difference in fast component contribution under gamma and alpha excitation allows to implement pulse-shape discrimination of alpha-radioactive background coming from impurities in the crystals.

Original language	English
Article number	4545166
Pages (from-to)	1473-1475
Number of pages	3
Journal	IEEE Transactions on Nuclear Science
Volume	55
Issue number	3
DOIs	https://doi.org/10.1109/TNS.2008.920428
State	Published - Jun 2008

Keywords

Crystal growth
Neutrinos
Scintillation detectors

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Korzhik, M. V., Kornoukhov, V. N., Missevitch, O. V., Fedorov, A. A., Annenkov, A. N., Buzanov, O. A., Borisevicth, A. E., Dormenev, V. I., Kholmetskii, A. L., Kim, S. K., Kim, Y., Kim, H., & Bratyakina, A. V. (2008). Large volume CaMoO₄ scintillation crystals. IEEE Transactions on Nuclear Science, 55(3), 1473-1475. Article 4545166. https://doi.org/10.1109/TNS.2008.920428

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title = "Large volume CaMoO4 scintillation crystals",

abstract = "Several scintillation CaMoO4 crystals with size up to 28 × 28 × 220 mm3 were grown by Czochralski method. Their scintillation properties have been evaluated. Light yield of full size crystals measured with XP2020 PMT is about 4% relative to small reference CsI(Tl) crystal. Radio luminescence spectrum under gamma-excitation contains single emission peak with maximum at 520 nm. Optical transmission spectra contain weak absorption band around 420 nm, which has almost no influence on scintillation light. This allows to produce even larger scintillation elements without deteriorating the light yield. Scintillation kinetics was measured under gamma- and alpha-particle excitation both in fast (2000 ns) and slow (200 μs) time scales. Fast components - 12 ns, (0.1%); 200 ns (0.5%) were detected along with slow - 3.8 μs (3.4%); 20 μs (96%) - components. Difference in fast component contribution under gamma and alpha excitation allows to implement pulse-shape discrimination of alpha-radioactive background coming from impurities in the crystals.",

keywords = "Crystal growth, Neutrinos, Scintillation detectors",

author = "Korzhik, {Mikhail V.} and Kornoukhov, {Vasily N.} and Missevitch, {Oleg V.} and Fedorov, {Andrei A.} and Annenkov, {Alexander N.} and Buzanov, {Oleg A.} and Borisevicth, {Andrei E.} and Dormenev, {Valery I.} and Kholmetskii, {Alexander L.} and Kim, {Sun Kee} and Youngduk Kim and Hongjoo Kim and Bratyakina, {Anna V.}",

year = "2008",

month = jun,

doi = "10.1109/TNS.2008.920428",

language = "English",

volume = "55",

pages = "1473--1475",

journal = "IEEE Transactions on Nuclear Science",

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publisher = "Institute of Electrical and Electronics Engineers Inc.",

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AU - Korzhik, Mikhail V.

AU - Kornoukhov, Vasily N.

AU - Missevitch, Oleg V.

AU - Fedorov, Andrei A.

AU - Annenkov, Alexander N.

AU - Buzanov, Oleg A.

AU - Borisevicth, Andrei E.

AU - Dormenev, Valery I.

AU - Kholmetskii, Alexander L.

AU - Kim, Sun Kee

AU - Kim, Youngduk

AU - Kim, Hongjoo

AU - Bratyakina, Anna V.

PY - 2008/6

Y1 - 2008/6

N2 - Several scintillation CaMoO4 crystals with size up to 28 × 28 × 220 mm3 were grown by Czochralski method. Their scintillation properties have been evaluated. Light yield of full size crystals measured with XP2020 PMT is about 4% relative to small reference CsI(Tl) crystal. Radio luminescence spectrum under gamma-excitation contains single emission peak with maximum at 520 nm. Optical transmission spectra contain weak absorption band around 420 nm, which has almost no influence on scintillation light. This allows to produce even larger scintillation elements without deteriorating the light yield. Scintillation kinetics was measured under gamma- and alpha-particle excitation both in fast (2000 ns) and slow (200 μs) time scales. Fast components - 12 ns, (0.1%); 200 ns (0.5%) were detected along with slow - 3.8 μs (3.4%); 20 μs (96%) - components. Difference in fast component contribution under gamma and alpha excitation allows to implement pulse-shape discrimination of alpha-radioactive background coming from impurities in the crystals.

AB - Several scintillation CaMoO4 crystals with size up to 28 × 28 × 220 mm3 were grown by Czochralski method. Their scintillation properties have been evaluated. Light yield of full size crystals measured with XP2020 PMT is about 4% relative to small reference CsI(Tl) crystal. Radio luminescence spectrum under gamma-excitation contains single emission peak with maximum at 520 nm. Optical transmission spectra contain weak absorption band around 420 nm, which has almost no influence on scintillation light. This allows to produce even larger scintillation elements without deteriorating the light yield. Scintillation kinetics was measured under gamma- and alpha-particle excitation both in fast (2000 ns) and slow (200 μs) time scales. Fast components - 12 ns, (0.1%); 200 ns (0.5%) were detected along with slow - 3.8 μs (3.4%); 20 μs (96%) - components. Difference in fast component contribution under gamma and alpha excitation allows to implement pulse-shape discrimination of alpha-radioactive background coming from impurities in the crystals.

KW - Crystal growth

KW - Neutrinos

KW - Scintillation detectors

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JO - IEEE Transactions on Nuclear Science

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ER -

Large volume CaMoO₄ scintillation crystals

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