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arXiv · 0904.3443

Search for Solar Axions Produced by Primakoff Conversion Using Resonant Absorption by $^{169}$Tm Nuclei

A. V. Derbin·S. V. Bakhlanov·A. I. Egorov·I. A. Mitropolsky·V. N. Muratova·D. A. Semenov·E. V. Unzhakov
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Abstract

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 $\to ^{169}$Tm$^*$ $\to ^{169}$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: $g_{Aγ}({GeV}^{-1})\cdot m_A(eV)\leq1.36\cdot10^{-5}$ (90% c.l.). In model of hadronic axion this restriction corresponds to the upper limit on axion mass - $m_A\leq$ 191 eV for 90% c.l.

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A. V. Derbin, S. V. Bakhlanov, A. I. Egorov, I. A. Mitropolsky, V. N. Muratova, D. A. Semenov, E. V. Unzhakov. 2009-04-22. Search for Solar Axions Produced by Primakoff Conversion Using Resonant Absorption by $^{169}$Tm Nuclei. https://doi.org/10.1016/j.physletb.2009.06.016

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