Modelling of Impurity Transport in a Scrape-off Layer with a Monte Carlo Method for a Single Particle Motion
✍ Scribed by T. Ono; T. Muramoto; T. Kenmotsu; Y. Hirooka; T. Kawamura
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 103 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0005-8025
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✦ Synopsis
Impurity transport in a scrape-off layer(SOL) of a toroidal device is analyzed based on a single particle motion using Monte Carlo procedures. A Langevin-type equation of motion is solved for an impurity particle. To follow long tracks of impurity particles, a guiding center model is adopted. The SOL adopted in this analysis is equivalent topologically to that of Large Helical Device (LHD). Screening efficiency of a SOL for the impurity penetration into a core plasma, deposition distribution of impurity particles and the relative densities of neutral and ionized impurity particles are discussed for two sets of plasma parameters assumed.