Fig. 61: Upper part: scan along the (1 1 0) direction across the (3/2, 5/2, 0) quadrupolar node at T = 19 k, within the double-k ordered phase of NdMg. The line is a lorenztian fit to the peak. Lower part: scan along the (1 1 0) direction across the (3/2, 5/2, 0) quadrupolar node at T = 78 K, above the Néel temperature.