-value The Q-value is one of several possible forms to represent the positional information of peaks in powder pattern. They are defined as Q=1/d2=(4in2)2 Q can be represented as a quadratic form of the (hkl)'s Q=hA+kB+12C+ hk d+hl E+kl F whereAb.c d.e. f are related to the lattice constants In ITo each Q-value is multiplied by 10000. U 苏五长苏 玉 长 Q-value The Q-value is one of several possible forms to represent the positional information of peaks in powder pattern. They are defined as: Q = 1/d2= ( 4 sin2Q)/l 2 Q can be represented as a quadratic form of the (hkl)'s. Q = h2A + k2B + l2C + hk D + hl E + kl F, where A, B, C, D, E, F are related to the lattice constants. In ITO each Q-value is multiplied by 10000