Gamma-ray flux in the Frejus underground laboratory measured with NaI detector

被引：21

作者：

Ohsumi, H ^{[1
]}

Gurriarán, R

Hubert, P

Arnold, R

Augier, C

Baker, J

Barabash, A

Bing, O

Brudanin, V

Caffrey, AJ

Campagne, JE

Caurier, E

Dassie, D

Egorov, V

Errahmane, K

Eschbach, R

Filipova, T

Guyonnet, JL

Hubert, F

Jollet, C

Jullian, S

Kisel, I

Klimenko, A

Kochetov, O

Kornoukhov, VN

Kovalenko, V

Kuzichev, V

Lalanne, D

Laplanche, F

Leccia, F

Linck, I

Longuemare, C

Marquet, C

Mauger, F

Nicholson, HW

Nikolic-Audit, I

Piquemal, F

Reyss, JL

Sarazin, X

Smolnikov, A

Stekl, I

Suhonen, J

Sutton, CS

Szklarz, G

Timkin, V

Tretyak, V

Umatov, V

Vála, L

Vanyushin, I

Vareille, A

机构：

[1] Saga Univ, Fac Culture & Educ, Saga 8408502, Japan

[2] CENBG, INP23, CNRS, F-33175 Gradignan, France

[3] Univ Bordeaux 1, F-33175 Gradignan, France

[4] IReS, INP23, CNRS, F-67037 Strasbourg, France

[5] Univ Strasbourg, F-67037 Strasbourg, France

[6] LAL, INP23, CNRS, F-91405 Orsay, France

[7] Univ Paris 11, F-91405 Orsay, France

[8] INEEL, Idaho Falls, ID 83415 USA

[9] ITEP, Moscow 117259, Russia

[10] JINR, Dubna 141980, Russia

[11] LPC, INP23, CNRS, F-14032 Caen, France

[12] Univ Caen, F-14032 Caen, France

[13] MHC, S Hadley, MA 01075 USA

[14] LSCE, CNRS, F-91190 Gif Sur Yvette, France

[15] Czech Tech Univ, FNSPE, Prague, Czech Republic

[16] Univ Jyvaskyla, Jyvaskyla 40351, Finland

[17] Charles Univ Prague, Prague, Czech Republic

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2002年 / 482卷 / 03期

关键词：

gamma-ray flux; NaI detector; underground laboratory; background; neutron capture gamma-ray; double beta decay;

D O I：

10.1016/S0168-9002(01)01866-6

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The gamma-ray flux in the Frejus underground laboratory has been studied using an NaI detector surrounded by different diagonostic shields. Below 4 MeV, the spectrum is dominated by radioactivities in the surrounding materials and rocks. Between 4 and 6 MeV, the shape of the spectrum is well explained by U, Th and daughters, which are internal contaminations in the NaI crystal. Between 6 and 10 MeV, the gamma-ray flux is strongly correlated with neutron captures in the surrounding materials. Finally, the gamma-ray flux above 10 MeV falls off and is related to the very weak cosmic muon flux via muon bremsstrahlung. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：832 / 839

页数：8

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