Search for resonant absorption of solar axions emitted in M1 transition in 57Fe nuclei

A. V. Derbin; A. I. Egorov; I. A. Mitropol’sky; V. N. Muratova; D. A. Semenov; E. V. Unzhakov

doi:10.1140/epjc/s10052-009-1095-y

EPJ

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2022 Impact factor 4.4

Particles and Fields

Open Access

Eur. Phys. J. C (2009) 62: 755-760
https://doi.org/10.1140/epjc/s10052-009-1095-y

Regular Article - Experimental Physics

Search for resonant absorption of solar axions emitted in M1 transition in ⁵⁷Fe nuclei

A. V. Derbin^*, A. I. Egorov, I. A. Mitropol’sky, V. N. Muratova, D. A. Semenov and E. V. Unzhakov

St. Petersburg Nuclear Physics Institute, 188300, Gatchina, Russia

^* e-mail: derbin@pnpi.spb.ru

Received: 26 May 2009
Revised: 17 June 2009
Published online: 9 July 2009

Abstract

A search for resonant absorption of 14.4 keV solar axions by a ⁵⁷Fe 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 the 14.4 keV nuclear level: A+⁵⁷Fe→⁵⁷Fe^*→⁵⁷Fe+γ. The new upper limit for the hadronic axion mass has been obtained of m _A≤159 eV (95% c.l.) (S=0.5, z=0.56).