四、X射线衍射强度
四、X射线衍射强度 1
衍射强度 CsCl:Pm-3m bcc-Fe:Im-3m a=0.431nm a=0.287nm 2
衍射强度 2 CsCl: Pm-3m a=0.431nm bcc-Fe： Im-3m a=0.287 nm
Intensity 100 901 CsCl:Pm-3m a=0.431nm -10 0 10 40 50 70 80 90100110120 130 140 150 160 170 180 2-theta =1.9373A Cscl(Sim) Observed Reflections Intensity 1001 bcc-Fe:Im-3m 0 a=0.287nm 00 o -10 10 20 60 70 90 100 110 120 130 140 150 160 170 180 2-theta Fe (5im) Observed Reflections
3 CsCl: Pm-3m a=0.431nm bcc-Fe: Im-3m a=0.287 nm =1.9373 Å
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 Refections
4 CsCl: Pm-3m a=0.431nm bcc-Fe: Im-3m a=0.431 nm 假设 =1.9373 Å
衍射的类型 X-ray:scattered by electron Electron:scattered by electrostatic potential Neutron:scattered by nuclei Diffraction pattern of X-ray Diffraction pattern of electron beam passing through Al foil beam passing through Al foil
衍射的类型 • X-ray: scattered by electron • Electron: scattered by electrostatic potential • Neutron: scattered by nuclei 5