Comparison between different approximations in the modelling of plasma shield formation in hard disruptions
Wall damage is ultimately determined by the effectiveness of radiative energy transport mechanisms acting within the ablation material. In this report the behaviour of the material ablated from the wall during thermal quench is investigated in terms of a similarity solution approach. Atomic physics and radiation physics features can be modelled in a relatively streamlined fashion using a magnetic field effect to describe the dynamics of the ionised ablation cloud. This is called the plasma shield. Different types of approximations in the modelling of plasma shields are compared and then used in an application to an ITER-type device.
Bibliographic Reference: Report: ENEA RT/FUS/93/14 EN (1993) 13 pp.
Record Number: 199410990 / Last updated on: 1994-11-28
Original language: en
Available languages: en