Experimental investigation of geologically produced antineutrinos with KamLAND

被引：282

作者：

Araki, T

Enomoto, S ^{[1
]}

Furuno, K

Gando, Y

Ichimura, K

Ikeda, H

Inoue, K

Kishimoto, Y

Koga, M

Koseki, Y

Maeda, T

Mitsui, T

Motoki, M

Nakajima, K

Ogawa, H

Ogawa, M

Owada, K

Ricol, JS

Shimizu, I

Shirai, J

Suekane, F

Suzuki, A

Tada, K

Takeuchi, S

Tamae, K

Tsuda, Y

Watanabe, H

Busenitz, J

Classen, T

Djurcic, Z

Keefer, G

Leonard, D

Piepke, A

Yakushev, E

Berger, BE

Chan, YD

Decowski, MP

Dwyer, DA

Freedman, SJ

Fujikawa, BK

Goldman, J

Gray, F

Heeger, KM

Hsu, L

Lesko, KT

Luk, KB

Murayama, H

O'Donnell, T

Poon, AWP

Steiner, HM

机构：

[1] Tohoku Univ, Res Ctr Neutrino Sci, Sendai, Miyagi 9808578, Japan

[2] Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA

[3] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[4] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[5] CALTECH, WK Kellogg Radiat Lab, Pasadena, CA 91125 USA

[6] Drexel Univ, Dept Phys, Philadelphia, PA 19104 USA

[7] Univ Hawaii Manoa, Dept Phys & Astron, Honolulu, HI 96822 USA

[8] Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA

[9] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

[10] Univ New Mexico, Dept Phys, Albuquerque, NM 87131 USA

[11] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[12] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[13] Duke Univ, Dept Phys, Durham, NC 27008 USA

[14] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

[15] Univ N Carolina, Dept Phys, Chapel Hill, NC 27599 USA

[16] Inst High Energy Phys, Beijing 100039, Peoples R China

[17] CEN Bordeaux Gradignan, IN2P3, CNRS, F-33175 Gradignan, France

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

来源：

NATURE | 2005年 / 436卷 / 7050期

关键词：

D O I：

10.1038/nature03980

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The detection of electron antineutrinos produced by natural radioactivity in the Earth could yield important geophysical information. The Kamioka liquid scintillator antineutrino detector (KamLAND) has the sensitivity to detect electron antineutrinos produced by the decay of U-238 and Th-232 within the Earth. Earth composition models suggest that the radiogenic power from these isotope decays is 16 TW, approximately half of the total measured heat dissipation rate from the Earth. Here we present results from a search for geoneutrinos with KamLAND. Assuming a Th/U mass concentration ratio of 3.9, the 90 per cent confidence interval for the total number of geoneutrinos detected is 4.5 to 54.2. This result is consistent with the central value of 19 predicted by geophysical models. Although our present data have limited statistical power, they nevertheless provide by direct means an upper limit (60 TW) for the radiogenic power of U and Th in the Earth, a quantity that is currently poorly constrained.

引用

页码：499 / 503

页数：5

共 29 条

[1] Measurement of the total active 8B solar neutrino flux at the sudbury neutrino observatory with enhanced neutral current sensitivity -: art. no. 181301 [J].

Ahmed, SN ;

Anthony, AE ;

Beier, EW ;

Bellerive, A ;

Biller, SD ;

Boger, J ;

Boulay, MG ;

Bowler, MG ;

Bowles, TJ ;

Brice, SJ ;

Bullard, TV ;

Chan, YD ;

Chen, M ;

Chen, X ;

Cleveland, BT ;

Cox, GA ;

Dai, X ;

Dalnoki-Veress, F ;

Doe, PJ ;

Dosanjh, RS ;

Doucas, G ;

Dragowsky, MR ;

Duba, CA ;

Duncan, FA ;

Dunford, M ;

Dunmore, JA ;

Earle, ED ;

Elliott, SR ;

Evans, HC ;

Ewan, GT ;

Farine, J ;

Fergani, H ;

Fleurot, F ;

Formaggio, JA ;

Fowler, MM ;

Frame, K ;

Fulsom, BG ;

Gagnon, N ;

Graham, K ;

Grant, DR ;

Hahn, RL ;

Hall, JC ;

Hallin, AL ;

Hallman, ED ;

Hamer, AS ;

Handler, WB ;

Hargrove, CK ;

Harvey, PJ ;

Hazama, R ;

Heeger, KM .

PHYSICAL REVIEW LETTERS, 2004, 92 (18) :181301-1

[2]

APOSTOLAKIS J, 2003, GEANT DETECTOR DESCR

[3] Measurement of neutrino oscillation with KamLAND: Evidence of spectral distortion [J].

Araki, T ;

Eguchi, K ;

Enomoto, S ;

Furuno, K ;

Ichimura, K ;

Ikeda, H ;

Inoue, K ;

Ishihara, K ;

Iwamoto, T ;

Kawashima, T ;

Kishimoto, Y ;

Koga, M ;

Koseki, Y ;

Maeda, T ;

Mitsui, T ;

Motoki, M ;

Nakajima, K ;

Ogawa, H ;

Owada, K ;

Ricol, JS ;

Shimizu, I ;

Shirai, J ;

Suekane, F ;

Suzuki, A ;

Tada, K ;

Tajima, O ;

Tamae, K ;

Tsuda, Y ;

Watanabe, H ;

Busenitz, J ;

Classen, T ;

Djurcic, Z ;

Keefer, G ;

McKinny, K ;

Mei, DM ;

Piepke, A ;

Yakushev, E ;

Berger, BE ;

Chan, YD ;

Decowski, MP ;

Dwyer, DA ;

Freedman, SJ ;

Fu, Y ;

Fujikawa, BK ;

Goldman, J ;

Gray, F ;

Heeger, KM ;

Lesko, KT ;

Luk, KB ;

Murayama, H .

PHYSICAL REVIEW LETTERS, 2005, 94 (08)

[4] EARTH AS A SOURCE OF ANTINEUTRINOS [J].

AVILEZ, C ;

MARX, G ;

FUENTES, B .

PHYSICAL REVIEW D, 1981, 23 (05) :1116-1117

[5]

BEHRENS H, 1969, LANDOLTBORNSTEIN GRO, V4

[6] TERRESTRIAL NEUTRINOS [J].

EDER, G .

NUCLEAR PHYSICS, 1966, 78 (03) :657-&

[7] First results from KamLAND: Evidence for reactor antineutrino disappearance [J].

Eguchi, K ;

Enomoto, S ;

Furuno, K ;

Goldman, J ;

Hanada, H ;

Ikeda, H ;

Ikeda, K ;

Inoue, K ;

Ishihara, K ;

Itoh, W ;

Iwamoto, T ;

Kawaguchi, T ;

Kawashima, T ;

Kinoshita, H ;

Kishimoto, Y ;

Koga, M ;

Koseki, Y ;

Maeda, T ;

Mitsui, T ;

Motoki, M ;

Nakajima, K ;

Nakajima, M ;

Nakajima, T ;

Ogawa, H ;

Owada, K ;

Sakabe, T ;

Shimizu, I ;

Shirai, J ;

Suekane, F ;

Suzuki, A ;

Tada, K ;

Tajima, O ;

Takayama, T ;

Tamae, K ;

Watanabe, H ;

Busenitz, J ;

Djurcic, Z ;

McKinny, K ;

Mei, DM ;

Piepke, A ;

Yakushev, E ;

Berger, BE ;

Chan, YD ;

Decowski, MP ;

Dwyer, DA ;

Freedman, SJ ;

Fu, Y ;

Fujikawa, BK ;

Heeger, KM ;

Lesko, KT .

PHYSICAL REVIEW LETTERS, 2003, 90 (02) :6

[8]

Enomoto S., 2005, THESIS TOHOKU U

[9]

Firestone R. B., 1997, Table of Isotopes

[10] Earth's heat flux revised and linked to chemistry [J].

Hofmeister, AM ;

Criss, RE .

TECTONOPHYSICS, 2005, 395 (3-4) :159-177

← 1 2 3 →