radtools.BCT.b2

property

property BCT.b2

Second reciprocal lattice vector.

\[\vec{b}_2 = \frac{2\pi}{V}\vec{a}_3\times\vec{a}_1\]

where \(V = \vec{a}_1\cdot(\vec{a}_2\times\vec{a}_3)\)

Returns:

b2(3,) numpy.ndarray

Second reciprocal lattice vector \(\vec{b}_2\).