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Author(s):
H. Sanuki, J. Todoroki and T. Kamimura
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Title:
Spatial Structure of Particle-Orbit Loss Regions in l =2 Helical Systems
Date of publication:
Feb. 1990
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Key words:
Helical system, orbit-loss, adiabatic invariant, drift equations
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Abstract:
Particle orbits and loss regions in both configuration and velocity space are studied on the basis of adiabatic invariants and guiding center drift equations. The boundary of loss region is determined from the condition whether the drift surfaces for both localized particles and transition particles between localized and blocked particles hit the limiter or not . Analytical form of loss region boundary for localized particle with (upsilon_ parallel)=0 is obtained. Effects of ripple modulation and electrostatic potential on particle confinement are also discussed.
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