Converts hyperfine couplings from Gauss to MHz (linear frequency). The Gauss specification may be defined as "the magnetic field at which the electron frequency is equal to the frequency provided".
hfc_gauss - an array of values in Gauss g - electron g-factor; if this parameter is skipped, free electron g-factor is used for conversion
hfc_mhz - an array of values in MHz
See examples/esr_liquids and examples/esr_solids directories.
The principal advantage of Gauss and mT units for hyperfine coupling is that they make the hyperfine tensor independent of the electron g-tensor. This is very useful in ab initio calculations of hyperfine couplings because g-tensor is a much harder quantity to compute.
Version 2.2, authors: Ilya Kuprov