The beam of a collimator K with a half divergence β/2 = 17,4 x 10–4 rd is limited by a diaphragm DT with an opening of 6 mm against which the sample stand is placed.
Un collimateur K de demi-divergence β /2 = 17,4 × 10–4 rd est diaphragmé à 6 mm à l'aide du diaphragme DT contre lequel se trouve le porte-échantillon.