Premium
Particle Simulation of the Transient Behavior of One‐Dimensional SOL‐Divertor Plasmas after an ELM Crash
Author(s) -
Takizuka T.,
Hosokawa M.
Publication year - 2006
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.200610066
Subject(s) - divertor , collisionality , plasma , tokamak , transient (computer programming) , crash , heat flux , particle (ecology) , mechanics , nuclear engineering , materials science , atomic physics , computational physics , physics , nuclear physics , heat transfer , computer science , oceanography , engineering , programming language , geology , operating system
Enhanced heat flux to the divertor plates after an ELM crash in H‐mode plasmas is a crucial issue for the tokamak reactor. Characteristic time of this heat flux is one of key factors of the influence on the plate. We investigate the transient behavior of SOL‐divertor plasmas after an ELM crash with the use of a one‐dimensional particle simulation code, PARASOL. Influence of the collisionality and the recycling rate on characteristic times of the fast‐time‐scale response and of the slow‐time‐scale response are examined. Fast‐time‐scale behaviors are affected by collisions, but slow‐time‐scale behaviors are insensitive to collisions. On the other hand, slow‐timescale behaviors are affected by recycling, but fast‐time‐scale behaviors are independent of recycling. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)