Pulse propagation of synchrotron radiation through a nuclear two-resonancesystem - art. no. 013803

Pulse propagation through a two-resonance medium was investigated in nuclea r forward scattering (NFS) of synchrotron radiation (SR). The SR pulse was coherently transmitted through a target system exhibiting two equivalent re sonances, the energy separation of which was varied via the Doppler effect, This allowed a continuous change from a single-resonance medium to a two-r esonance system with adjustable splitting. For increasing splitting, the ob served time evolutions of NFS changed from a dynamical brat (DB) via hybrid forms of beating into a DB-modulated quantum beat. The experimental result s were consistently fitted using a dynamical theory for NFS of SR.