Mossbauer filtration of synchrotron radiation (SR) in the multipulse regime is considered. Phase correlations causes interference between resonant responses of single pulses of SR sequence. Therefore, both the coherent amplification of response intensity and the variation in form of free-induction decay take place. Numerical analysis of theoretical expressions has been carried out.
The coherent response in the forward direction to the almost stepwise -pulse (hereafter one supposes that the pure stepwise -pulse is described by a step function) is theoretically analysed. In this way, first of all the analytical form of the -pulse has been obtained when remagnetization of the `magnetic shutter' takes place. The problem is solved by employing the semiclassical Maxwell - Bloch formalism. Then the time evolution of the coherent response to that -pulse is calculated when it propagates through a two-level resonant medium. Finally the theoretical results are used to describe the experiment quantitatively.
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