Abstract
Profiles of the He II 4686- and 3203-Å lines observed during the passage of the imploding current sheath in a high-velocity, low-density pinch show a broadening that at early times is not due to the usual mechanisms (Doppler, Holtsmark, or Zeeman effects). Most of this broadening is therefore interpreted as due to Stark effects caused by suprathermal collective field fluctuations, and at later times as due to a combination of these and Doppler effects.
- Received 29 September 1969
DOI:https://doi.org/10.1103/PhysRevLett.23.1279
©1969 American Physical Society