Depth-resolved X-ray magnetic circular dichroism measurement by a multi-anode microchannel plate detector combined with polarization switching

16th International Conference on X-ray Absorption Fine Structure

Amemiya, K.^1,2 ; Sakamaki, M.^1,2 ; Kishimoto, S.^1,2 ; Kosuge, T.^1,2 ; Nigorikawa, K.^2,3 ; Tanaka, M.^2,4 ; Uchida, T.^2,4 ; Saito, M.^2,4 ; Ikeno, M.^2,4 ; Nakayoshi, K.^2,4

Institute of Materials Structure Science, High Energy Accelerator Research Organization, Oho 1-1, Tsukuba, Ibaraki

305-0801, Japan^1

Open Source Consortium of Instrumentation (Open-It), Japan^2

Accelerator Laboratory, High Energy Accelerator Research Organization, Oho 1-1, Tsukuba, Ibaraki

305-0801, Japan^3

Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, Oho 1-1, Tsukuba, Ibaraki

305-0801, Japan^4

关键词: Depth-resolved;    High signal-to-noise ratio;    Microchannel plate detector;    Polarization switching;    Simultaneous measurement;    Soft X-ray regions;    X-ray magnetic circular dichroism;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/712/1/012033/pdf
DOI  :  10.1088/1742-6596/712/1/012033

来源: IOP

【 摘 要 】

A depth-resolved X-ray magnetic circular dichroism (XMCD) technique has been developed in the soft X-ray region by combining a multi-anode microchannel plate detector with polarization switching between right and left circular polarizations. A simultaneous measurement for 30-channel anodes has been achieved with a continuous data acquisition rate of 1 kHz, which is fast enough for 10 Hz polarization switching. This enables us to realize the layer-resolved XMCD analysis with a high signal-to-noise ratio.