問い合わせ番号

INS-0000000313

Helicity-modulation XMCD

  At BL39XU, the helicity-modulation technique for precise XMCD measurements has been developed by combining an XPR with a phase-sensitive (lock-in) detection system. This technique provides us with extremely high quality XMCD spectra in short measurement times. A dichroism signal in the order of 10^-4 is obtainable with a good signal-to-noise ratio for 10 s-integration times at each energy point with a properly prepared sample. Additionally, XMCD measurements during a magnetic saturation process and under high magnetic fields generated with a superconducting magnet are feasible.