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Abstract

Aiming at understanding the details of plasma - wall interaction during hard disruptions in Tokamaks, a theory has been conceived, whereby the formation of so-called "virtual limiters" is predicted to occur. A numerical code has been accordingly prepared, based on a somewhat simplified mathematical description of the complex interplay that is envisaged to take place between three systems: the hot plasma, the solid first wall, and the "virtual limiter" - namely, the cloud of vaporized material (impervious to the hot plasma particles) which is originated because of the very high heat loads that are produced over certain spots of the first wall system. The full evolutionary history of the phenomenon is in principle amenable to being investigated with the help of the prepared numerical code + albeit with some degree of uncertainty, resulting from the rather crude approximations that have been resorted to, due to the complexity of the problem.

Additional information

Authors: SESTERO A ENEA, CENTRO RICERCHE ENERGIA FRASCATI (ITALY) VENTURA A ENEA, DIV. FISICA E CALCOLO SCIENTIFICO, BOLOGNA (ITALY) , ENEA, CENTRO RICERCHE ENERGIA FRASCATI (ITALY);ENEA, DIV. FISICA E CALCOLO SCIENTIFICO, BOLOGNA (ITALY)
Bibliographic Reference: 6TH INTERNATIONAL CONFERENCE ON PLASMA SURFACE INTERACTIONS IN CONTROLLED FUSION DEVICES, NAGOYA (JAPAN), MAY 14-18, 1984 PP. 1-11 WRITE TO ENEA - CENTRO RICERCHE ENERGIA FRASCATI, SERVIZIO STUDI E DOCUMENTAZIONE, C.P. 65 - 00044 FRASCATI, ROMA (ITALY) ME
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