TY - JOUR T1 - Improved Unlike-Particle Collision Operator for delta-f Drift-Kinetic Particle Simulations AU - R. A. Kolesnikov, W. X. Wang & F. L. Hinton JO - Communications in Computational Physics VL - 2 SP - 231 EP - 239 PY - 2011 DA - 2011/09 SN - 9 DO - http://doi.org/10.4208/cicp.090410.260410a UR - https://global-sci.org/intro/article_detail/cicp/7498.html KW - AB -
Plasmas in modern tokamak experiments contain a significant fraction of impurity ion species in addition to main deuterium background. A new unlike-particle collision operator for δf particle simulation has been developed to study the nonlocal effects of impurities due to finite ion orbits on neoclassical transport in toroidal plasmas. A new algorithm for simulation of cross-collisions between different ion species includes test-particle and conserving field-particle operators. An improved field-particle operator is designed to exactly enforce conservation of number, momentum and energy.