Intensity 100 90 CsCl:Pm-3m a=0.431nm -10 0 10 40 50 70 80 90 100110120 130 140 150 160 170 180 2-theta =1.9373A CsCl(5m Observed Reflections 100 bcc-Fe:Im-3m 060000 a=0.431nm 假设 10 0 10 20 60 80 90 100 110 120 130 140 150 160 170 180 2-theta 4 Fe (Sim) Observed Refections4 CsCl: Pm-3m a=0.431nm bcc-Fe: Im-3m a=0.431 nm 假设 =1.9373 Å