@article{oai:nifs-repository.repo.nii.ac.jp:00010626,
 author = {NISHIMURA,  Shin and Nakamura, Y. and Nishioka, K.},
 issue = {9},
 journal = {Physics of Plasmas},
 month = {Sep},
 note = {The configuration dependence of parallel momentum inputs to target plasma particle species by tangentially injected neutral beams is investigated in non-axisymmetric stellarator/heliotron model magnetic fields by assuming the existence of magnetic flux-surfaces. In parallel friction integrals of the full Rosenbluth-MacDonald-Judd collision operator in thermal particles' kinetic equations, numerically obtained eigenfunctions are used for excluding trapped fast ions that cannot contribute to the friction integrals. It is found that the momentum inputs to thermal ions strongly depend on magnetic field strength modulations on the flux-surfaces, while the input to electrons is insensitive to the modulation. In future plasma flow studies requiring flow calculations of all particle species in more general non-symmetric toroidal configurations, the eigenfunction method investigated here will be useful.},
 title = {Parallel momentum input by tangential neutral beam injections in stellarator and heliotron plasmas},
 volume = {22},
 year = {2015}
}