1.Below is a selected area electron diffraction pattern of a-Fe (bcc.a=0.2866nm).Find AL for the diffraction pattern,index the pattern and determine the zone axis. R (R/R2 (R:/R)2X2 BCC(hkl) Ri 1.6 1 2 110 R3 2.8 3.06 6.12 211 R 4.2 6.89 13.78 321 R> R2 Ra 1.6 1 2 110 cos中= hh2+k k2 +1l2 Vh+k+Vn好+k好+ Lλ=Rd1.Below is a selected area electron diffraction pattern of -Fe (bcc. a=0.2866nm). Find L for the diffraction pattern, index the pattern and determine the zone axis. R (Ri /R1 ) 2 (Ri /R1 ) 2X2 BCC(hkl) R1 1.6 1 2 110 R3 2.8 3.06 6.12 211 R2 4.2 6.89 13.78 321 R4 1.6 1 2 110 R1 R2 R R3 4