Search for 14.4 keV solar axions using a proportional Kr counter
Derbin A. V. 1, Drachnev I. S.1, Gavrilyuk Yu. M.2, Gangapshev A. M. 2, Kazalov V. V. 2, Kuzminov V. V. 2, Muratova V. N. 1, Semenov D. A. 1, Tekueva D. A. 2, Trushin M. V.1, Unzhakov E. V. 1, Yakimenko S. P. 2
1Konstantinov Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute, Gatchina, Russia
2 Institute for Nuclear Research of Russian Academy of Sciences, Moscow, Russian
Email: derbin_av@pnpi.rcki.ru

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search for axions with an energy of 14.4 keV, arising in the nuclear M1 transition of the 57Fe isotope in the Sun, was performed using the axioelectric effect in Kr atoms. A gas proportional counter in a low-background setup located in the underground laboratory of the BNO INR RAS was used for the search. As a result, a new upper limit was established for the product of the coupling constant of an axion with an electron and the effective coupling constant with nucleons: |gAe gANeff|≤ 3.2· 10-16 for 90% confidence level. Keywords: axions, dark matter, axion-like particles.
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