Role of phase space structures in collisionless drift wave turbulence and impact on transport modeling
作者: Y. KosugaS.-I. ItohP.H. DiamondK. ItohM. Lesur
作者单位: 1Research Institute for Applied Mechanics, Kyushu University, Fukuoka, Japan
2Research Center for Plasma Turbulence, Kyushu University, Fukuoka, Japan
3CASS and CMTFO, University of California at San Diego, CA, United States of America
4National Institute for Fusion Science, Gifu, Japan
5Institut Jean Larmor, Lorraine University, Nancy, France
刊名: Nuclear Fusion, 2017, Vol.57 (7)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1741-4326/57/7/072006
原始语种摘要: In fusion plasmas, several mechanisms such as heating, wave-particle interaction etc can drive deviations of distribution function from Maxwelian to form phase space structures. This article discusses the impact of phase space structures in drift wave turbulence on dynamics and transport modeling. The two cases of (i) coherent holes and (ii) incoherent granulations (clusters of correlated resonant particles with finite life time) are treated. Their dynamical impact on driving subcritical instability is analyzed by explicitly calculating the nonlinear growth rate. The role of zonal flows is also addressed. It is explained how phase space structures can be related to transient events and non-diffusive transport, issues in current confinement research.
全文获取路径: IOP  (合作)

  • collisionless 无碰撞的
  • turbulence 湍流紊流
  • impact 冲击碰撞
  • phase 相位
  • transport 输运
  • drift 水平巷道
  • modeling 制祝型
  • diffusive 扩散的
  • zonal 带状的
  • particle 颗粒