Study of Ion Line Broadening in the Tormac Discharge

摘要

Tormac (Toroidal Magnetic Cusp) is a magnetic confinement plasma concept having absolute minimum-B geometry. Two versions of Tormac are considered here. Tormac T IV-c has a glass vessel of rectangular cross section, 0.5 m in diameter. The confinement field rises to approx. 4.5 kG in approx. 8.3 mu sec. Tormac T V has a T-shaped glass vessel, 1 m in diameter, with a field of approx. 3 kG, rising in approx. 10 mu sec. Gaussian HeII 4686 A spectral lines having full widths at half maximum over 2 A have been observed in both Tormac plasmas. (ERA citation 06:009981)