Fig. 1: Experimental setup and nuclear phase retrieval spectroscopy (NPRS) algorithms’ sketch.
From: Nuclear phase retrieval spectroscopy using resonant x-ray scattering
Resonant monochromatized synchrotron radiation (SR) passes through the analyzer with transmission function T(Δ − ΔD) mounted on the Mössbauer drive. The x-rays are then scattered off a 57Fe sample with response function R(Δ). Single x-ray photons are detected by avalanche photodiods (APDs) as a function of time and Doppler detuning. Our iterative NPRS algorithms are applied to recover the spectrum (intensity and phase) from these registered counts. Starting from a flat initialization, the algorithms iteratively improve the spectrum up to the desired precision. Here the example of a magnetized 57Fe sample with the SR pulse driving two nuclear hyperfine transitions is presented.
