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Scientific paper
Apr 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrvd..39.2089v&link_type=abstract
Physical Review D (Particles and Fields), Volume 39, Issue 8, 15 April 1989, pp.2089-2099
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122
Elementary Particle Processes, Radiation Mechanisms, Polarization, Particle-Theory And Field-Theory Models Of The Early Universe
Scientific paper
We present a practical design for a detector sensitive to axions and other light particles with a two-photon interaction vertex. Such particles would be produced in the solar interior by Primakoff conversion of blackbody photons and could be detected by their reconversion into x rays (average energy about 4 keV) in a strong laboratory magnetic field. An existing large superconducting magnet would be suitable for this purpose. The transition rate is enhanced by filling the conversion region with a buffer gas (H2 or He). This induces an effective photon mass (plasma frequency) which can be adjusted to equal the axion mass being searched for. Axion-photon conversion is then coherent throughout the detector volume for all axion energies. Axions with mass in the range 0.1 eV<~ma<~5 eV can be detected using gas pressures of 0.1-300 atm. Axions with the standard coupling strength to photons would give counting rates of 10-5-10 sec-1 over this mass range. The search would definitively test one of the only two regions of axion parameters not excluded by astrophysical constraints.
Bibber Karl van
McIntyre P. M.
Morris Donald E.
Raffelt Georg
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