The resonant absorption of solar axions by 57Fe nuclei, which is accompanied by the excitation of the first excited nuclear level: A + 57Fe → 57Fe*→ 57Fe + γ(14.4 keV), is sought. To seek 14.4-keV photons, a Si(Li) detector and an enriched 57Fe target are used. The detector and target are placed in a low-background setup equipped with passive and active shieldings. As a result, a new upper limit m A ≤ 360 eV (at 90% C.L.) has been determined for the axion mass.

Original languageEnglish
Pages (from-to)12-16
Number of pages5
JournalJETP Letters
Volume85
Issue number1
DOIs
StatePublished - 1 Jan 2007

    Scopus subject areas

  • Physics and Astronomy (miscellaneous)

ID: 42278854