TY - JOUR
T1 - Higher order multipoles and splines in plasma simulations
AU - Okuda, H.
AU - Cheng, C. Z.
N1 - Funding Information:
This work was supported by United States Energy Research and Development Administration, Contract no. EY-76-C.02-3073.
PY - 1978
Y1 - 1978
N2 - The reduction of spatial grid effects in plasma simulations has been studied numerically using higher order multipole expansions and the spline method in one dimension. It is found that, while keeping the higher order moments such as quadrupole and octopole moments substantially reduces the grid effects, quadratic and cubic splines in general have better stability properties for numerical plasma simulations when the Debye length is much smaller than the grid size. In particular the spline method may be useful in three-dimensional simulations for plasma confinement where the grid size in the axial direction is much greater than the Debye length.
AB - The reduction of spatial grid effects in plasma simulations has been studied numerically using higher order multipole expansions and the spline method in one dimension. It is found that, while keeping the higher order moments such as quadrupole and octopole moments substantially reduces the grid effects, quadratic and cubic splines in general have better stability properties for numerical plasma simulations when the Debye length is much smaller than the grid size. In particular the spline method may be useful in three-dimensional simulations for plasma confinement where the grid size in the axial direction is much greater than the Debye length.
UR - https://www.scopus.com/pages/publications/0017961829
UR - https://www.scopus.com/pages/publications/0017961829#tab=citedBy
U2 - 10.1016/0010-4655(78)90012-7
DO - 10.1016/0010-4655(78)90012-7
M3 - Article
AN - SCOPUS:0017961829
SN - 0010-4655
VL - 14
SP - 169
EP - 176
JO - Computer Physics Communications
JF - Computer Physics Communications
IS - 3-4
ER -