# scale_bt_rate¶

ChiantiPy.tools.util.scale_bt_rate(inDict, ip, f=1.7)[source] [edit on github]

Apply ionization descaling of [R55], a Burgess-Tully type scaling to ionization rates and temperatures. The result of the scaling is to return a scaled temperature between 0 and 1 and a slowly varying scaled rate as a function of scaled temperature. In addition, the scaled rates vary slowly along an iso-electronic sequence.

Parameters: inDict : dict the input dictionary should have the following key pairs: temperature, array-like and rate, array-like the ionization potential in eV. f : float (optional) the scaling parameter, 1.7 generally works well

Notes

btTemperature and btRate keys are added to inDict

References

 [R55] (1, 2) Dere, K. P., 2007, A&A, 466, 771