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Abstract

Theory has shown that completely detached gas targets are completely controlled by the transverse ion-neutral collisionality. In order to transform this information to a format of practical relevance, knowledge of the plasma density width delta(n) at the gas target entrance (GTE) is required. In a previous work, delta(n) was determined with the relation delta(n) delta(T), where delta(T) is the upstream temperature fall-off length, which can be reliably estimated. This paper provides evidence for this relation, which is not a priori obvious. In the absence of empirical data, one has to rely on a computational (B2-EIRENE) database. Proportionality between delta(n) and delta(T) is confirmed. Complementary analytical considerations are presented to elucidate the underlying physics.

Additional information

Authors: BORASS K, Max-Planck-Institut f³r Plasmaphysik, EURATOM Association, Garching (DE)
Bibliographic Reference: An article published in: Elsevier; Journal of Nuclear Materials, 290-293 (2001) pp.551-555
Availability: An article published in: Elsevier; Journal of Nuclear Materials, 290-293 (2001) pp.551-555
Record Number: 200013458 / Last updated on: 2001-06-27
Category: PUBLICATION
Original language: en
Available languages: en