Fig. 39: Gd L3-XMCD response of the Gd-Co2 amorphous thin film for two 0.1 T pulses of 25 ns and 60 ns. Each data point represents the magnitude of the GdL3-XMCD (which was 0.02 at its maximum) collected in 3 minutes. The reasonable statistics of the XMCD signal in the inset results from the difference of absorption taken with left and right circular- polarised X-rays averaged over 31 QWP-induced flipping of the photon helicity, each absorption being a sum of 80 spectra.