Exploring the hidden interior of the Earth with directional neutrino measurements - INSPIRE

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Exploring the hidden interior of the Earth with directional neutrino measurements

Michael Leyton
(
- Barcelona, IFAE and
- Royal Holloway, U. of London and
- MIT and
- MIT, LNS
)
,
Stephen Dye
(
- U. Hawaii, Honolulu
)
,
Jocelyn Monroe
(
- Royal Holloway, U. of London and
- MIT and
- MIT, LNS and
- KEK, Tsukuba
)

Oct 18, 2017

11 pages

Published in:

Nature Commun. 8 (2017) 15989

e-Print:

1710.06724 [physics.geo-ph]

DOI:

10.1038/ncomms15989

View in:

ADS Abstract Service

reference search23 citations

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Abstract: (arXiv)

Roughly 40% of the Earth's total heat flow is powered by radioactive decays in the crust and mantle. Geo-neutrinos produced by these decays provide important clues about the origin, formation and thermal evolution of our planet, as well as the composition of its interior. Previous measurements of geo-neutrinos have all relied on the detection of inverse beta decay reactions, which are insensitive to the contribution from potassium and do not provide model-independent information about the spatial distribution of geo-neutrino sources within the Earth. Here we present a method for measuring previously unresolved components of Earth's radiogenic heating using neutrino-electron elastic scattering and low-background, direction-sensitive tracking detectors. We calculate the exposures needed to probe various contributions to the total geo-neutrino flux, specifically those associated to potassium, the mantle and the core. The measurements proposed here chart a course for pioneering exploration of the veiled inner workings of the Earth.

Note:

18 pages, 11 figures, 8 tables

neutrino: geophysics
neutrino electron: elastic scattering
energy flow: temperature
potassium
spatial distribution
semileptonic decay
tracking detector
radioactivity
formation
thermal

References(43)

Figures(10)

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