triaxial pinch

triaxial pinch

[trī′ak·sē·əl ′pinch]
(plasma physics)
A device for heating a confined plasma, in which a discharge in an annular space between two concentric cylindrical conductors forms a cylindrical sheet of plasma, and this plasma is then confined and compressed by magnetic fields produced by currents flowing in the axial direction in the discharge itself and in the two conductors.