An assessment of diffusive tokamak transport mechanisms of concern for alpha particles indicates that the ‘‘stochastic regime’’ is the only one that appears to pose a real danger for adequate alpha confinement. This fact, in conjunction with the threshold character of that mechanism, allows one to decide whether an alpha born at a given location will be lost or confined, according to a very simple criterion. Implementing this criterion numerically results in a new code for the assessment of alpha confinement, which is orders of magnitude faster than earlier codes used for this purpose.
REFERENCES
1.
2.
K.
Tani
, T.
Takizuka
, M.
Azumi
, and H.
Kishimoto
, Nucl. Fusion
5
, 657
(1983
).3.
4.
R. B. White, A. H. Boozer, R. Goldston, R. Hay, J. Albert, and C. F. F. Karney, in Plasma Physics and Controlled Nuclear Fusion Research, 1982, Proceedings of the 9th International Conference (IAEA, Vienna, 1983), Vol. III, p. 391.
5.
K. Tani, T. Takizuka, and M. Azumi, in Proceedings of the Workshop on ‘Statistical Plasma Physics,’ U.S.‐Japan Joint Institute for Fusion Theory Program (Institute of Plasma Physics, Nagoya University, Nagoya, 1986), p. 176.
6.
7.
8.
9.
10.
11.
V. Ya.
Goloborod’ko
, Ya. I.
Kolesnichenko
, and V. A.
Yavorskij
, Phys. Scr.
T16
, 46
(1987
).12.
13.
14.
15.
16.
This content is only available via PDF.
© 1989 American Institute of Physics.
1989
American Institute of Physics
You do not currently have access to this content.