Open AccessKINK INSTABILITIES OF A SHARP BOUNDARY PLASMA WITH SMALL ASPECT RATIO
Author(s) -
Gu Yong-Nian
Publication year - 1984
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.33.554
Subject(s) - aspect ratio (aeronautics) , plasma , beta (programming language) , physics , toroid , limit (mathematics) , boundary value problem , perturbation (astronomy) , kink instability , electrical conductor , instability , condensed matter physics , atomic physics , mechanics , plasma instability , mathematical analysis , quantum mechanics , mathematics , optoelectronics , computer science , programming language
Kink instabilities of a sharp boundary plasma with small aspect ratio are studied. The results of numerical calculations show that a conductive shell has a stabilizing effect to some extent and critical beta of toroidal mode number n=1 is the minimum whether there is a conductive shell or not, i.e. the perturbation with n=1 is the most dangerous one. With decrease of aspect ratio, the critical beta increases initially, when a/R = 0.7, it appears as a maximum, when a/R≥0.6, the critical beta values of high beta limit and low beta limit are nearly equal.