Abstract
The resonance absorption of solar axions by 7Li nuclei, which is accompanied by the excitation of the first nuclear level of lithium a + 7Li → 7Li* → 7Li + γ, is sought. To this end, the energy spectrum has been measured by an HPGe detector that is surrounded by a LiOH layer. A new upper limit m a ≤ 16 keV (at 90% C.L.) has been determined for the mass of the hadron axion.
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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 81, No. 8, 2005, pp. 453–458.
Original Russian Text Copyright © 2005 by Derbin, Egorov, Mitropolsky, Muratova.
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Derbin, A.V., Egorov, A.I., Mitropolsky, I.A. et al. Search for solar axions emitted in an M1 transition in 7Li* nuclei. Jetp Lett. 81, 365–370 (2005). https://doi.org/10.1134/1.1951009
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DOI: https://doi.org/10.1134/1.1951009