Time-resolved resonant soft X-ray scattering combined with MHz synchrotron X-ray and laser pulses at the Photon Factory

Abstract

A picosecond pump–probe resonant soft X-ray scattering measurement system has been developed at the Photon Factory storage ring for highly efficient data collection. A high-repetition-rate high-power compact laser system has been installed to improve efficiency via flexible data acquisition to a sub-MHz frequency in time-resolved experiments. Data are acquired by gating the signal of a channel electron multiplier with a pulse-counting mode capable of discriminating single-bunch soft X-ray pulses in the dark gap of the hybrid operation mode in the storage ring. The photoinduced dynamics of magnetic order for multiferroic manganite SmMn2O5 are clearly demonstrated by the detection of transient changes in the resonant soft X-ray scattering intensity around the Mn L III- and O K-edges.

Development of a portable and cost-effective femtosecond fibre laser synchronizable with synchrotron X-ray pulses

“…This is because synchrotron radiation offers a broad spectrum and high flux, high repetition rates, a wide wavelength selection and easier access to beam time, facilitating a wide range of experiments that are complementary to those possible with XFELs (Brynes, 2021). Consequently, the development of timeresolved measurement systems utilizing synchrotron X-rays is continuously advancing (Fukaya et al, 2022).…”