Results of Searching for Solar Hadronic Axions Emitted in the M1 Transition in 83Kr Nuclei

摘要

Axions with the energy of $$9.4$$ keV emitted in the М 1 transition in_(83)Kr nuclei in the Sun have been searched for using the resonant absorption reaction $$A + ,{{,}^{{83}}}{kern 1pt} {ext{Kr}} o ,{{,}^{{83}}}{ext{K}}{{{ext{r}}}^{ star }} o ,{{,}^{{83}}}{kern 1pt} {ext{Kr}} + gamma ,e$$ (9.4 keV). A krypton-filled proportional counter located in a low-background setup is used to detect $$gamma $$ rays and electrons. A new limit on the axion–nucleon coupling constant $$left| {g_{{AN}}^{3} - g_{{AN}}^{0}} ight| leqslant 8.4 imes {{10}^{{ - 7}}}$$ is obtained. In the hadronic axion model, it leads to a new limit on the axion mass $${{m}_{A}} leqslant 65$$ eV (95% CL). A possibility of searching for solar axions with_(57)Fe-containing semiconductor crystals is described.