Ultrahigh Densities and Volume Recombination inside the Separatrix of the Alcator C-Mod Tokamak
Year: 1998
Type: article
Abstract: MARFEs are experimentally studied using spectroscopic techniques to determine their internal characteristics. We find the local density and temperature in the MARFE to be $(2--3)\ifmmode\times\else\texttimes\fi{}{10}^{21}\mathrm{m}{}^{\ensuremath{-}3}$ and 0.7--1.0 eV, respectively. The volume recombination rate is also large in the MARFE, $(5--10)\ifmmode\times\else\texttimes\fi{}{10}^{22}\mathrm{s}{}^{\ensuremath{-}1}$, similar in magnitude to the plasma source rate in the core. Because this plasma sink is located in confined regions of the plasma, the MARFE acts like a limiter; ions ``recycle'' from the MARFE as neutrals. These characteristics have not been predicted by current models.
Source: Physical Review Letters
Authors: B. Lipschultz, J. L. Terry, C. Boswell, A. Hubbard, B. LaBombard, D. A. Pappas
Institution: Massachusetts Institute of Technology
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2066735683