# mt2hz.m

Converts hyperfine couplings from milliTesla to Hz (linear frequency). The mT specification may be defined as "the magnetic field at which the electron frequency is equal to the frequency provided".

## Syntax

    hfc_hz=mt2hz(hfc_mt,g)


## Arguments

  hfc_mt     - an array of values in mT

g          - electron g-factor; if this parameter
is skipped, free electron g-factor is
used for conversion


## Outputs

  hfc_hz     - an array of values in Hz


## Examples

See examples/esr_liquids and examples/esr_solids directories.

## Notes

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.