treams.TMatrix.cd

property TMatrix.cd

Circular dichroism (CD).

The CD is calculated as

\[CD = \frac{\langle \sigma_\mathrm{abs} \rangle_+ - \langle \sigma_\mathrm{abs} \rangle_-} {\langle \sigma_\mathrm{abs} \rangle_+ + \langle \sigma_\mathrm{abs} \rangle_-}\]

where \(\langle \sigma \rangle_s\) is the rotationally averaged absorption cross section under the illumination with the polarization \(s\). It is only implemented for global T-matrices.

Returns:

float or complex