Hard x-ray spectral enhancement using Fano resonance

Wen-Te Liao^1*

¹Department of Physics, National Central University, Taoyuan, Taiwan

* Presenter:Wen-Te Liao, email:wente.liao@gmail.com

Nuclear resonant scattering of x rays is an important method to probe the dynamics and structure of condensed matter. As the bandwidth of a synchrotron-radiation pulse is much broader than the linewidth of Mössbauer isotopes in a target, the number of input resonant x-ray photons is less than one in average. The authors propose using magnetic switching to control the interference between the off-resonant background x rays and the resonant scattered signal, for enhancement of the output spectral intensity via Fano resonance [Phys. Rev. Applied 18, L051001 (2022)]. This scheme points toward a bright, flexible x-ray source for precision spectroscopy utilizing modern synchrotron radiation and nuclear resonance.

Keywords: x ray, synchrotron radiation, nuclear resonant scattering, iron borate