Key points are not available for this paper at this time.
A search experiment has been carried out to look for relic cosmic axions trapped in the halo of our Galaxy and limits on their coupling g₀ and galactic abundance are presented for the axion mass range of m₀= (5. 4-5. 9) 10^-6 eV. The detector consisted of a tunable high-Q microwave cavity immersed in liquid helium and permeated by a strong magnetic field. A low-noise microwave receiver with a cryogenic HEMT amplifier as its first stage was coupled to the cavity. The noise power within successive cavity bandwidths was spectrum analyzed and searched for narrow peaks resulting from axion-to-photon conversions in the cavity.
Hagmann et al. (1990) studied this question.