Abstract
The total momentum and energy conservation relations for the plasma-maser interaction among the resonant, nonresonant modes, and the electrons are satisfied for magnetized plasma. The Manley-Rowe relation in its original form is violated because the resonant electrons carry nonlinear momentum and energy. The plasma-maser satisfies the generalized Manley-Rowe relation which includes the effective action from resonant electrons in addition to the original one from waves. It is shown that the plasma-maser effect works if there are Onsager symmetry breaking factors such as temperature anisotropy due to external magnetic field, inhomogeneity due to density gradient. The generation mechanism of the electromagnetic radiation is studied based on the plasma-maser interaction among the electrostatic lower hybrid turbulences, accelerated electrons and extraordinary mode radiation. The theory agrees with the most striking and new features of the observation of the auroral kilometric radiation (AKR) in that the AKR bursts are observed at frequencies well above the local electron gyrofrequency.
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