4 papers
Non-Ambipolarity of Microturbulent Transport
Allen H Boozer
When exact magnetic surfaces are assumed to exist, the gyrokinetic theory of microturbulence gives the same radial transport for ions and electrons. But, exact magnetic surfaces do…
The toroidal flux and separatrix effects in tokamaks
Allen H Boozer
An implication of Faraday's Law is thst the rate of change of the poloidal flux relative to the toroidal flux associated with a magnetic surface is given by the loop voltage. The e…
Pfirsch-Schlüter Current
Allen H Boozer
The Pfirsch-Schlüter current is a current that flows along the magnetic field lines in a toroidal plasma equilibrium that is required to make the plasma current density divergence…
Comment on Nuclear Fusion 66, 016012 (2026) and arXiv:2508.03561 by Richard Fitzpatrick, A Simple Model of Current Ramp-Up and Ramp-Down in Tokamaks
Allen H Boozer
The paper Nuclear Fusion \textbf{66}, 016012 (2026) by Richard Fitzpatrick is based on fundamental errors in the physics of the evolution of the poloidal magnetic flux in tokamaks.…