作者: U. van Bürck
关键词: Atomic physics 、 Pulse propagation 、 Infrared 、 Beat (acoustics) 、 Physics 、 Synchrotron radiation 、 Thin film 、 Scattering 、 Time evolution 、 Radiation
摘要: Resonant pulse propagation (RPP) is reviewed with special emphasis on the of synchrotron radiation (SR) pulses through nuclear single-resonance media. The most remarkable feature in time evolution RPP dynamical beat (DB), a pronounced modulation periods increasing and decreasing sample thickness. A comparison at α-wavelengths (SR Mossbauer radiation) infrared visible regimes case molecular, atomic excitonic resonances reveals an astonishing universality observed phenomena. DB described within double-hump picture group-velocity picture, finally attributed to energy exchange between field oscillator system multiple scattering.