Results from a search for cosmic axions

Journal Article · Wed Aug 15 04:00:00 EDT 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.42.1297· OSTI ID:6507322

Hagmann, C; Sikivie, P; Sullivan, N S; Tanner, D B ^[1]

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1. University of Florida, Gainesville, FL (USA)

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 {ital g}{sub {ital a}{gamma}{gamma}} and galactic abundance are presented for the axion mass range of {ital m}{sub {ital a}}=(5.4--5.9){times}10{sup {minus}6} eV. The detector consisted of a tunable high-{ital 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.

• DOE Contract Number: FG05-86ER40272
• OSTI ID: 6507322
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 42:4; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

640101* -- Astrophysics & Cosmology-- Cosmic Radiation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AXIONS
BOSONS
COSMIC RADIATION
COUPLING CONSTANTS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
GALAXIES
GOLDSTONE BOSONS
IONIZING RADIATIONS
MICROWAVE RADIATION
MILKY WAY
PARTICLE IDENTIFICATION
POSTULATED PARTICLES
RADIATIONS
RELICT RADIATION