Fenstermacher Lower Hybrid | lower_hybrid_fenstermacher()
i_hcd_primary/i_hcd_secondary= 1:
This forumla was originally in the Oak RidgeSystems Code1, attributed to Fenstermacher and is used in the AEA FUS 172 report2.
\text{Current drive efficiency [A/W]} = 0.36 \frac{(1+(T_{\text{e}}/25)^{1.16})}{R_{0} n_{\text{e},20}}