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arXiv · 0811.3836

Heat flow of the Earth and resonant capture of solar 57-Fe axions

F. A. Danevich·A. V. Ivanov·V. V. Kobychev·V. I. Tretyak
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Abstract

In a very conservative approach, supposing that total heat flow of the Earth is exclusively due to resonant capture inside the Earth of axions, emitted by 57-Fe nuclei on Sun, we obtain limit on mass of hadronic axion: m_a<1.8 keV. Taking into account release of heat from decays of 40-K, 232-Th, 238-U inside the Earth, this estimation could be improved to the value: m_a<1.6 keV. Both the values are less restrictive than limits set in devoted experiments to search for 57-Fe axions (m_a<216-745 eV), but are much better than limits obtained in experiments with 83-Kr (m_a<5.5 keV) and 7-Li (m_a<13.9-32 keV).

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F. A. Danevich, A. V. Ivanov, V. V. Kobychev, V. I. Tretyak. 2008-11-24. Heat flow of the Earth and resonant capture of solar 57-Fe axions. https://doi.org/10.3103/s0884591309020056

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