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- Title
Search for resonant absorption of solar axions emitted in an M1 transition in <sup>57</sup>Fe nuclei.
- Authors
Derbin, A. V.; Egorov, A. I.; Mitropol'sky, I. A.; Muratova, V. N.; Bazlov, N. V.; Bakhlanov, S. V.; Semenov, D. A.; Unzhakov, E. V.
- Abstract
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.
- Subjects
LIGHT absorption; AXIONS; NUCLEAR activation analysis; TRANSITION metals; CHEMICAL detectors; SPECTRUM analysis
- Publication
JETP Letters, 2007, Vol 85, Issue 1, p12
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364007010031