2.A face centered cubic structured single crystal with a lattice constant of ap is studied by a monochromatic X-ray radiation whose wavelength is A=a/2: 2)If the incident beam direction is along the [010]direction of the crystal,please deduce the possible directions of diffracted beams. 衍射斑点：(2-20)，(-2-20)， (2-20) (0-2-2),(0-22),(0-40) 衍射方向：[200]，[-200]， [002][00-2],[0-20] (0-2-2) Incident> (0-40) (000) beam (0-20) [010] (0-22) -2-20)2.A face centered cubic structured single crystal with a lattice constant of a0 is studied by a monochromatic X-ray radiation whose wavelength is λ= a0 /2: 2)If the incident beam direction is along the [010] direction of the crystal, please deduce the possible directions of diffracted beams. (0-20) O Incident beam (0-2-2) (2-20) (0-22) (-2-20) (000) [010] (0-40) 衍射斑点：(2-20),(-2-20), (0-2-2),(0-22),(0-40) 衍射方向：[200],[-200], [002],[00-2],[0-20] k0 k1