102 citations · 254 across the 15 of their papers we have counts for
15 papers
Isotope Effects on TEM-driven Turbulence and Zonal Flows in Helical and Tokamak Plasmas
Motoki Nakata, Masanori Nunami, Hideo Sugama +1
Impacts of isotope ion mass on trapped electron mode (TEM) driven turbulence and zonal flows in magnetically confined fusion plasmas are investigated. Gyrokinetic simulations of TE…
Comprehensive Gyrokinetic Study of Eigenstate Transitions in Fast Ion-Driven Electrostatic Drift Instabilities
ByungJun Kang, Hideo Sugama, Tomo-Hiko Watanabe +1
This study comprehensively investigates fast ion-driven drift instability, extending the theory in [B. J. Kang and T. S. Hahm, Phys. Plasmas 26, 042501 (2019)]. The eigenmode equat…
Energy exchange between electrons and ions in ion temperature gradient turbulence
T. Kato, H. Sugama, T. -H. Watanabe +1
Microturbulence in magnetic confined plasmas contributes to energy exchange between particles of different species as well as the particle and heat fluxes. Although the effect of t…
Absolute value measurement of ion-scale turbulence by two-dimensional phase contrast imaging in Large Helical Device
T. Kinoshita, K. Tanaka, H. Sakai +3
Absolute value measurements of turbulence amplitude in magnetically confined high-temperature plasmas can effectively explain turbulence-driven transport characteristics and their…
Polarization and magnetization in collisional and turbulent transport processes
H. Sugama, S. Matsuoka, M. Nunami
Expressions of polarization and magnetization in magnetically confined plasmas are derived, which include full expansions in the gyroradius to treat effects of both equilibrium and…
Study on impurity hole plasmas by global neoclassical simulation
Keiji Fujita, Shinsuke Satake, Masanori Nunami +3
An impurity hole observed in the Large Helical Device (LHD) is a hollow density profile of an impurity ion species formed in the core plasma where the negative (inward-pointing) am…