How Geoneutrinos can help in understanding of the Earth heat flux

Abstract

Abstract. The Hydride Earth model predictions of geoneutrino flux and intrinsic Earth heat flux are discussed. The geoneutrino flux predicted by the model can be adjusted to the experimental one. The predicted intrinsic Earth heat flux is significantly larger than model dependent experimental value obtained under assumption that the main heat transfer mechanism is a thermal conductivity. We introduce an additional mechanism of heat transfer in the Earth's crust, namely the energy transfer by hot gases produced in the Earth crust at great depths. The experimental data supporting this idea, in particular the temperature profiles measured in the Kola super deep borehole, are discussed.

On first detection of solar neutrinos from CNO cycle with Borexino

“…The intensity of events for the function from column 3 with 40 K geoantineutrinos contribution is R CNO+1%K = 7.05 cpd/100 t. The intensity of events for the function from column 4 with 40 K geoantineutrinos contribution is R CNO+1.5%K = 8.1 cpd/100 t. (10) Let compare (7) with ( 9) and ( 8) with (10). We can see that the values are close.…”

“…Therefore, in the Hydridic Earth model, the subsurface temperature oscillates [6] and not grows up till hydrides exist in the Earth. This argument was used in [10,11,12,13]. It is noted in these works that thermal conductivity is not the main mechanism of heat transfer in the Earth, but protons and hydrogen-containing gases carry out the heat away.…”

On the contribution of the $^{40}$K geo-antineutrino to single Borexino events

“…We have learned how to respond to the objections to Hydridic Earth model. The answers to the main objections are published in [7,8,9,10]. Here we note that the entire Earth could not have melt because the Hydridic Earth model contains a subsurface cooling mechanism that is activated when the subsurface is heated enough to decompose the metal hydrides.…”

“…It is also noted in [7,8,9,10] that thermal conductivity is not the main mechanism of heat transfer in the Earth, but protons and hydrogen-containing gases carry out the heat away. In these works the experimental evidences are provided that the heat flux from Earth interior can reach the several hundreds TW.…”

“…We expect to find a certain value for the intensity of total events from the CNO neutrinos and from the 40 K geo-antineutrinos in the range of 6 ÷ 9 events per day in 100 tons of scintillator. We also expect that, as a result of this analysis, several events per day will be taken away from events attributed in work [1] to solar 7 Be neutrinos interactions and 210 Bi decays. The errors of the obtained intensities will become symmetrical.…”