Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· References in the article
· Citations to the Article (73) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Partial radiogenic heat model for Earth revealed by geoneutrino measurements
Authors:
Kamland Collaboration; Gando, A.; Gando, Y.; Ichimura, K.; Ikeda, H.; Inoue, K.; Kibe, Y.; Kishimoto, Y.; Koga, M.; Minekawa, Y.; Mitsui, T.; Morikawa, T.; Nagai, N.; Nakajima, K.; Nakamura, K.; Narita, K.; Shimizu, I.; Shimizu, Y.; Shirai, J.; Suekane, F.; Suzuki, A.; Takahashi, H.; Takahashi, N.; Takemoto, Y.; Tamae, K.; Watanabe, H.; Xu, B. D.; Yabumoto, H.; Yoshida, H.; Yoshida, S.; Enomoto, S.; Kozlov, A.; Murayama, H.; Grant, C.; Keefer, G.; Piepke, A.; Banks, T. I.; Bloxham, T.; Detwiler, J. A.; Freedman, S. J.; Fujikawa, B. K.; Han, K.; Kadel, R.; O'Donnell, T.; Steiner, H. M.; Dwyer, D. A.; McKeown, R. D.; Zhang, C.; Berger, B. E.; Lane, C. E.; Maricic, J.; Miletic, T.; Batygov, M.; Learned, J. G.; Matsuno, S.; Sakai, M.; Horton-Smith, G. A.; Downum, K. E.; Gratta, G.; Tolich, K.; Efremenko, Y.; Perevozchikov, O.; Karwowski, H. J.; Markoff, D. M.; Tornow, W.; Heeger, K. M.; Decowski, M. P.
Affiliation:
AA(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AB(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AC(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AD(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AE(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AF(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AG(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AH(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AI(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AJ(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AK(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AL(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AM(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AN(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AO(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AP(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AQ(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AR(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AS(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AT(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AU(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AV(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AW(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AX(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AY(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), AZ(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), BA(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), BB(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), BC(Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan), BD(Institute for the Physics and Mathematics of the Universe, Tokyo University, Kashiwa 277-8568, Japan), BE(Institute for the Physics and Mathematics of the Universe, Tokyo University, Kashiwa 277-8568, Japan), BF(Institute for the Physics and Mathematics of the Universe, Tokyo University, Kashiwa 277-8568, Japan), BG(Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA), BH(Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA), BI(Institute for the Physics and Mathematics of the Universe, Tokyo University, Kashiwa 277-8568, Japan), BJ(Physics Department, University of California, Berkeley and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA), BK(Physics Department, University of California, Berkeley and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA), BL(Physics Department, University of California, Berkeley and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA), BM(Institute for the Physics and Mathematics of the Universe, Tokyo University, Kashiwa 277-8568, Japan), BN(Institute for the Physics and Mathematics of the Universe, Tokyo University, Kashiwa 277-8568, Japan), BO(Physics Department, University of California, Berkeley and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA), BP(Physics Department, University of California, Berkeley and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA), BQ(Physics Department, University of California, Berkeley and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA), BR(Physics Department, University of California, Berkeley and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA), BS(W. K. Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA), BT(W. K. Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA), BU(W. K. Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA), BV(Department of Physics, Colorado State University, Fort Collins, Colorado 80523, USA), BW(Physics Department, Drexel University, Philadelphia, Pennsylvania 19104, USA), BX(Physics Department, Drexel University, Philadelphia, Pennsylvania 19104, USA), BY(Physics Department, Drexel University, Philadelphia, Pennsylvania 19104, USA), BZ(Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA), CA(Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA), CB(Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA), CC(Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA), CD(Institute for the Physics and Mathematics of the Universe, Tokyo University, Kashiwa 277-8568, Japan), CE(Physics Department, Stanford University, Stanford, California 94305, USA), CF(Physics Department, Stanford University, Stanford, California 94305, USA), CG(Physics Department, Stanford University, Stanford, California 94305, USA), CH(Institute for the Physics and Mathematics of the Universe, Tokyo University, Kashiwa 277-8568, Japan), CI(Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA), CJ(Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA), CK(Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA), CL(Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA), CM(Institute for the Physics and Mathematics of the Universe, Tokyo University, Kashiwa 277-8568, Japan), CN(Institute for the Physics and Mathematics of the Universe, Tokyo University, Kashiwa 277-8568, Japan)
Publication:
Nature Geoscience, Volume 4, Issue 9, pp. 647-651 (2011).
Publication Date:
09/2011
Origin:
NATURE
Abstract Copyright:
(c) 2011: Nature
DOI:
10.1038/ngeo1205
Bibliographic Code:
2011NatGe...4..647K

Abstract

The Earth has cooled since its formation, yet the decay of radiogenic isotopes, and in particular uranium, thorium and potassium, in the planet's interior provides a continuing heat source. The current total heat flux from the Earth to space is 44.2+/-1.0TW, but the relative contributions from residual primordial heat and radiogenic decay remain uncertain. However, radiogenic decay can be estimated from the flux of geoneutrinos, electrically neutral particles that are emitted during radioactive decay and can pass through the Earth virtually unaffected. Here we combine precise measurements of the geoneutrino flux from the Kamioka Liquid-Scintillator Antineutrino Detector, Japan, with existing measurements from the Borexino detector, Italy. We find that decay of uranium-238 and thorium-232 together contribute TW to Earth's heat flux. The neutrinos emitted from the decay of potassium-40 are below the limits of detection in our experiments, but are known to contribute 4TW. Taken together, our observations indicate that heat from radioactive decay contributes about half of Earth's total heat flux. We therefore conclude that Earth's primordial heat supply has not yet been exhausted.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)


Find Similar Abstracts:

Use: Authors
Title
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints