Geo-neutrinos and Earth's interior

TL;DR

Geo-neutrinos are a new tool for exploring Earth's interior, providing insights into its composition and heat sources through advanced neutrino detection technologies.

Contribution

This paper reviews the recent developments and future prospects of geo-neutrino detection as a novel method to study Earth's composition and thermal dynamics.

Findings

Detection of geo-neutrinos offers new insights into Earth's radioactive elements.

Advances in neutrino detectors enable exploration of Earth's interior.

Geo-neutrino studies can help understand Earth's heat flow and formation.

Abstract

The deepest hole that has ever been dug is about 12 km deep. Geochemists analyze samples from the Earth's crust and from the top of the mantle. Seismology can reconstruct the density profile throughout all Earth, but not its composition. In this respect, our planet is mainly unexplored. Geo-neutrinos, the antineutrinos from the progenies of U, Th and K40 decays in the Earth, bring to the surface information from the whole planet, concerning its content of natural radioactive elements. Their detection can shed light on the sources of the terrestrial heat flow, on the present composition, and on the origins of the Earth. Geo-neutrinos represent a new probe of our planet, which can be exploited as a consequence of two fundamental advances that occurred in the last few years: the development of extremely low background neutrino detectors and the progress on understanding neutrino propagation. We review the status and the prospects of the field.