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The power radiated by low-temperature high-density impurity inclusions in plasmas, such as the clouds surrounding ablating impurity pellets, or the vapour layers evolving over vapourizing surfaces subjected to high-temperature plasmas, is calculated by means of a collisional-radiative (CR) model without the usual assumptions of equilibrium conditions. The populations of the ionization levels are determined by finite-rate calculations and, due to the much shorter characteristic times involved, instantaneous relaxation is assumed for the intermediate excitation levels considered. Data obtained with this model in the low-density limit are compared with those of Post-Jensen corona model. Results of representative scenario calculations pertaining to the ablation of carbon and neon pellets are presented.

Additional information

Authors: VERES G, KFKI-Research Institute for Particle and Nuclear Physics, Budapest (HU);LENGYEL L L, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE)
Bibliographic Reference: Article: Journal of Nuclear Materials, Vol. 250 (1997), pp. 96-102
Record Number: 199810325 / Last updated on: 1998-03-09
Original language: en
Available languages: en