21-23 October 2019
Conference center of the Czech Association of Scientific and Technical Societies
Europe/Prague timezone

Terrestrial 40K geoneutrinos and Solar CNO neutrinos

22 Oct 2019, 16:50
25m
Room 319 (3rd floor) (Conference center of the Czech Association of Scientific and Technical Societies)

Room 319 (3rd floor)

Conference center of the Czech Association of Scientific and Technical Societies

Novotného lávka 5, Prague 1, Czech Republic

Speaker

Valery Sinev

Description

Value of the Earth thermal flux is estimated through temperature gradient method (47 TW). There are exist other ways of heat transfer to the Earth surface from inside, so total heat flux is unknown yet. Non-direct measurements establish Earth thermal flux on the level 200-300 TW. To produce so high flux one needs to add heat produced by 40K to the known isotopes 238U and 232Th. Exact value of potassium in the Earth is unknown. To estimate its content we need to measure 40K antineutrino flux on the surface of the Earth. The problem that solar neutrino fluxes from CNO cycle look very similar to 40K flux. It is needed independent experiment on measuring solar CNO neutrinos to distinguish between 40K and CNO fluxes in a large scintillation detector (e.g. Borexino). We propose to use 115In as a target (R. Raghavan's idea) for solar CNO neutrinos. New type of a detector proposed.

Primary authors

Valery Sinev Dr Leonid Bezrukov (INR RAS) Dr Ivan Karpikov (INR RAS) Mrs Alexandra Kurlovich (INR RAS) Bayarto Lubsandorzhiev (Institute for Nuclear Research) Dr Andrey Mezhokh (INR RAS) Ms Svetlana Silaeva (INR RAS) Dr Valentina Zavarzina (INR RAS) Mr Vasily Morgalyuk (IOC RAS)

Presentation Materials