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The annihilation into axion $e^+ e^- \to a$ is investigated in a plasma andan external magnetic field. This process via a plasmon intermediate state has aresonant character at a particular energy of the emitted axion. The emissivityby $e^+ e^- \to a$ is compared with the axion cyclotron emissivity.Comment: 8 pages, latex, 4 PS figure

FIELD-INDUCED AXION EMISSION VIA PROCESS e+e-→a IN PLASMA

FIELD-INDUCED AXION EMISSION VIA PROCESS e⁺e^-→a IN PLASMA