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

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

2008-11-24

arxiv.org/abs/0811.3836v2

Kinematics and Physics of Celestial Bodies 25 (2009) 102-106

Physics

Nuclear Physics

Nuclear Experiment

8 pages

Scientific paper

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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