@techreport{oai:nifs-repository.repo.nii.ac.jp:00010465,
 author = {"Yokoyama,  M. and Itoh,  K. and Okamura,  S. and Matsuoka,  K. and Itoh,  S. -I"},
 month = {May},
 note = {"Maximum-J (J is the second adiabatic invariant) capability, i.e., the radial derivative of J has the same sign as that of pressure, is investigated in a quasi-axisymmetric (QA) stellarator to investigate improved confinement. Due to the existence of non-axisymmetry of the magnetic field strength, a local maximum of J is created to cause the drift reversal. External controllability of Maximum-J condition is also demonstrated, by which impact of magnetic configuration on turbulent transport can be studied."},
 title = {Maximum-J Capability in a Quasi-Axisymmetric Stellarator},
 year = {2001}
}