Level crossings, excess times, and transient plasma-wall interactions in fusion plasmas

被引：22
|
作者：
Theodorsen, A. [1 ]
Garcia, O. E. [1 ]
机构：
[1] UiT Arctic Univ Norway, Dept Phys & Technol, N-9037 Tromso, Norway
来源：
PHYSICS OF PLASMAS | 2016年 / 23卷 / 04期
关键词：
MATHEMATICAL-ANALYSIS;
D O I：
10.1063/1.4947235
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Based on a stochastic model for intermittent fluctuations in the boundary region of magnetically confined plasmas, an expression for the level crossing rate is derived from the joint distribution of the process and its derivative. From this the average time spent by the process above a certain threshold level is obtained. This provides novel predictions of plasma-wall interactions due to transient transport events associated with a radial motion of blob-like structures in the scrape-off layer. Published by AIP Publishing.
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页数：5
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