Self-sustained Maser oscillations of a large magnetization driven by a radiation damping-based electronic feedback

Abstract : In this paper, the dynamics of a magnetization undergoing a radiation-damping based feedback radio-frequency field is investigated both theoretically and experimentally. It is shown that due to the presence of T-1 relaxation the evolution equations predict the existence of self-sustained maser pulses. This phenomenon is a consequence of the competition between two different processes, namely, T-1 relaxation and a precession about a magnetization-dependent radio-frequency field. Experiments show the existence of periodic revivals of the free induction decay over unusually long periods of time, on the order of tens of seconds. (C) 2002 American Institute of Physics.
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Journal of Chemical Physics, American Institute of Physics, 2002, 116 (16), pp.7073-7080. 〈10.1063/1.1462583〉
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Daniel Abergel, Alain Louis-Joseph, Jean-Yves Lallemand. Self-sustained Maser oscillations of a large magnetization driven by a radiation damping-based electronic feedback. Journal of Chemical Physics, American Institute of Physics, 2002, 116 (16), pp.7073-7080. 〈10.1063/1.1462583〉. 〈hal-00954860〉

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