.. index:: ElasticDiffSphere
This fitting function models the elastic part of the dynamics structure factor of a particle undergoing continuous diffusion but confined to a spherical volume, :ref:`ElasticDiffSphere <func-ElasticDiffSphere>`.
S(Q,E\equiv \hbar \omega) = (3 \frac{j_1(QR)}{QR})^2(Q\cdot R) \delta (\omega)
Because of the spherical symmetry of the problem, the structure factor is expressed in terms of the j_l(z) spherical Bessel functions.
.. attributes::
Q (double, default=1.0) Momentum transfer
.. properties::
.. categories::
.. sourcelink::