A method is presented for calculating the current distribution and power loss in the individual turns of helical solenoids of nonmagnetic materials. Examples are presented pertaining to 5- and 14-turn coils with or without a circular billet located inside the solenoid. In addition, experimental results are included showing the excellent agreement between theory and practice.
Ryff, Peter F., "Current Distribution in Helical Solenoids" (1972). Electrical and Computer Engineering Publications and Research. Paper 2.