A NOVEL GUINIER DIFFRACTOMETER WITH AUTOMATED ADJUSTMENT AND SETTINGS

A novel Guinier camera and diffractometer allow automated adjustment o f all optical components and change from transmission to reflection ge ometry by remote control. The apparatus is equipped with two counters. A special degree of freedom within the counter set-up aligns the coun ters towards any point at the circumference of the Rowland circle and keeps it oriented towards the sample during a 2theta scan. So. only on e rotation is used during measurement. The sample support, oriented by two translations and one rotation, is independent from the counter se t-up. The apparatus combines the highest accuracy with full variabilit y.