Abstract.A search for resonant absorbtion of 14.4 keV solar axions by 57 Fe target was performed. The Si(Li) detector placed inside the low-background setup was used to detect the γ-quanta appearing in the deexcitation of 14.4 keV nuclear level: A + 57 Fe → 57 Fe * → 57 Fe + γ. The new upper limit for the hadronic axion mass have been obtained: mA ≤ 151 eV (90% C.L.) (S=0.5, z=0.56).

The search for resonant absorption of the Primakoff solar axions by 169 Tm nuclei have been performed. Such an absorption should lead to the excitation of low-lying nuclear energy level: A+ 169 Tm → 169 Tm * → 169 Tm +γ (8.41 keV). The Si(Li) detector and 169 Tm target placed inside the low-background setup were used for that purpose. As a result, a new restriction on the axion-photon coupling and axion mass was obtained: g Aγ (GeV −1 ) · m A (eV ) ≤ 1.36 · 10 −5 (90% c.l.). In model of hadronic axion this restriction corresponds to the upper limit on axion mass -m A ≤ 191 eV for 90% c.l.

A search for axioelectric absorption of solar axions produced in the p + d → 3 He + γ (5.5 MeV) reactions has been performed with a BGO detector placed in a lowbackground setup. A model-independent limit on an axionnucleon and axion-electron coupling constant has been obtained: |g Ae × g 3 AN | < 2.9 × 10 −9 for 90 % confidence level. The constrains of the axion-electron coupling have been obtained for hadronic axion with masses in (0.1-1) MeV range: |g Ae | ≤ (1.4-9.7) × 10 −7 .

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