UNIT CELL PARAMETERS

Allows the user to convert the standard real space unit cell parameters, $a, b, c, \alpha , \beta ,$ and $\gamma$ into the reciprocal space parameters $a^*, b^*, c^*, \alpha^*, \beta^*,$ and $\gamma^*$. All angles are entered and displayed in degrees, and all distances should be in Angstroms or inverse Angstroms.

The user starts by choosing the direction of the conversion, followed by the parameters of the unit cell.