Diffraction vector type: h,-2*h,l
For h = 1, l = 1: I /= 0 F = (0,Fy,Fz)
For h = 1, l = 2: I /= 0 F = (0,Fy,Fz)
For h = 2, l = 1: I /= 0 F = (0,Fy,Fz)
For h = 2, l = 2: I /= 0 F = (0,Fy,Fz)
Diffraction vector type: 2*h,-h,l
For h = 1, l = 1: I /= 0 F = (Fx,0,Fz)
For h = 1, l = 2: I /= 0 F = (Fx,0,Fz)
For h = 2, l = 1: I /= 0 F = (Fx,0,Fz)
For h = 2, l = 2: I /= 0 F = (Fx,0,Fz)
Diffraction vector type: h,h,l
For h = 1, l = 1: I /= 0 F = (Fx,Fx,Fz)
For h = 1, l = 2: I /= 0 F = (Fx,Fx,Fz)
For h = 2, l = 1: I /= 0 F = (Fx,Fx,Fz)
For h = 2, l = 2: I /= 0 F = (Fx,Fx,Fz)