Self-absorption of Hβ line in pellet ablation clouds in devices with magnetic confinement of high-temperature plasma
Abstract
We have determined the optical absorption depth for Hβ line in clouds of secondary plasma near pellets ablating in high-temperature plasma of devices with magnetic confinement. It is established that, for all values of the electron concentration (1016-3 × 1017 cm-3) and electron temperature (2-5 eV) measured in typical impurity pellet clouds, the absorption is negligibly small. At the same time, it can be significant in clouds of higher density (1017-5 × 1017 cm-3) with a temperature of 1-2 eV, which are typical of cryogenic fuel pellets.
- Publication:
-
Technical Physics Letters
- Pub Date:
- April 2014
- DOI:
- 10.1134/S1063785014040257
- Bibcode:
- 2014TePhL..40..361S