June 22, 2020 to July 2, 2020
US/Central timezone

A search for resonant absorption of solar axions by atomic nuclei

Not scheduled


Dr Dmitriy Semenov (NRC Kurchatov Insitute "PNPI")


In series of works resonance excitation of the $^8$$^3$Kr first nuclear level (E = 9.4 keV) by solar axions formed via the Primakoff mechanism is sought. The $\gamma$- and X-ray photons, the conversion and Auger electrons arising from the excited-level relaxation are detected with a gas proportional counter of a low-background detector in the underground Baksan Neutrino Observatory. The following experimental constraint is obtained for the product of the axion–photon coupling constant and the axion mass: |g$_A$$_\gamma$×m$_A$| ≤ 6.3×10$^-$$^7$ and model independent upper limit on the combination of isoscalar and isovector axion-nucleon couplings |g$_3$−g$_0$|≤8.4×10$^-$$^7$. In the framework of the hadronic-axion model, this corresponds to a new axion-mass constraint of m$_A$ ≤ 12.7 eV at 95% C.L.


Presented the results of searches for resonant absorption of solar axions by atomic nuclei

Primary authors

Albert Musaevich Gangapshev (Institute for Nuclear Research RAS) Prof. Aleksandr Derbin (Petersburg Nuclear Physics Institute NRC KI) Dr Dmitriy Semenov (NRC Kurchatov Insitute "PNPI") Dzhamilya Anuarovna Tekueva (Institute for Nuclear Research RAS) Mr Evgeniy Unzhakov (NRCKI PNPI) Dr Ilia Drachnev (PNPI-NRC KI) Ms Irina Lomskaya (PNPI named by B.P. Konstantinov NRCKI) Sergey Ivanovich Panasenko (Karazin Kharkiv National University) Sergey Stanislavovich Ratkevich (Karazin Kharkiv National University) Dr Valentina Muratova (NRCKI PNPI) Valery Vasilyevich Kuzminov (Researcher, Institute for Nuclear Research RAS) Vladimir Vladimirovich Kazalov (Institute for Nuclear Research RAS) Yuri Mikhailovich Gavrilyuk (Institute for Nuclear Research RAS)

Presentation materials