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作者:... H. Tsuchiya , K. Itoh , S.-I. Itoh
来源:[J].Scientific Reports(IF 2.927), 2018, Vol.8 (1), pp.879-929
摘要:Abstract(#br)Interaction between a quasi-stable stationary MHD mode and a tongue-shaped deformation is observed in the toroidal plasma with energetic particle driven MHD bursts. The quasi-stable stationary 1/1 MHD mode with interchange parity appears near the resonant ration...
作者:... A. Fujisawa , K. Itoh , S.-I. Itoh
来源:[J].Scientific Reports(IF 2.927), 2016, Vol.6 (1), pp.4-161
摘要:Abstract(#br)Turbulence and its structure formation are universal in neutral fluids and in plasmas. Turbulence annihilates global structures but can organize flows and eddies. The mutual-interactions between flow and the eddy give basic insights into the understanding of non...
作者:... Y. Suzuki , S.-I. Itoh , K. Itoh
来源:[J].Scientific Reports(IF 2.927), 2015, Vol.5 (1), pp.473-482
摘要:Abstract(#br)The coupling between the transport and magnetic topology is an important issue because the structure of magnetic islands, embedded in a toroidal equilibrium field, depends on the nature of the transport at the edge of the islands. Measurements of modulated heat pulse...
作者:... H. Tsuchiya , S. Inagaki , S.-I. Itoh
来源:[J].Scientific Reports(IF 2.927), 2016, Vol.6 (1), pp.045004-53
摘要:Abstract(#br)An abrupt onset of the new tongue-shaped deformation of magnetic surface in magnetized plasmas, which was conjectured in since the 1960s but has not been observed, is experimentally identified just before an abrupt onset of a large-scale collapse event. Two novel pro...
作者:K. Kamiya , K. Itoh , S.-I. Itoh
来源:[J].Scientific Reports(IF 2.927), 2016, Vol.6 (1), pp.1408-49
摘要:Abstract(#br)The turbulent structure formation, where strongly-inhomogeneous turbulence and global electromagnetic fields are self-organized, is a fundamental mechanism that governs the evolution of high-temperature plasmas in the universe and laboratory (e.g., the generation of ...
作者:S.-I. Itoh , T. Mitsuzono ...
来源:[J].Scientific Reports(IF 2.927), 2016, Vol.6 (1)
摘要:Abstract(#br)The variety of scalar and vector fields in laboratory and nature plasmas is formed by plasma turbulence. Drift-wave fluctuations, driven by density gradients in magnetized plasmas, are known to relax the density gradient while they can generate flows. On the other ha...
作者:S.-I. Itoh , Y. Miura ...
来源:[J].Scientific Reports(IF 2.927), 2016, Vol.6 (1), pp.1408-1412
摘要:Abstract(#br)Self-regulation between structure and turbulence, which is a fundamental process in the complex system, has been widely regarded as one of the central issues in modern physics. A typical example of that in magnetically confined plasmas is the Low confinement mod...
作者:S.-I. Itoh , K. Itoh , A. Fukuyama
来源:[J].Journal of Nuclear Materials(IF 1.211), 1995, Vol.220, pp.117-131
摘要:Abstract(#br)In this article, the physics of various enhanced confinement modes are reviewed. After the discovery of the H-mode, many enhanced confinement modes have been observed. Various kinds of enhanced confinement modes are surveyed first. Typical features of enhanced confin...
作者:S.-I. Itoh , A. Fukuyama
来源:[J].Physics Letters A(IF 1.766), 2000, Vol.276 (5), pp.281-285
摘要:Abstract(#br)Correlation between electron heat diffusivity and short wavelength ( kρ i ∼5) fluctuation amplitude was observed in the TFTR tokamak in the core of ERS plasmas (Phys. Lett. A 236 (1997) 339). These fluctuations propagate in the ion diamagnetic drift direction wi...
作者:S.-I. Itoh , K. Itoh , S. Inagaki
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (2)
摘要:This article assesses the understanding of and impact by the hysteresis in transport relation. The rapid changes of fluxes compared to slow changes of plasma parameters are overviewed for both edge barrier and core plasmas. The theoretical approaches to understanding the dir...

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