@article{oai:nifs-repository.repo.nii.ac.jp:00010764,
 author = {YOSHIMURA,  Shinji and TERASAKA,  Kenichiro and TANAKA, E. and ARAMAKI,  Mitsutoshi and OKAMOTO,  Atsushi and NAGAOKA,  Kenichi and NAGAOKA, Ken-ichi and TANAKA, M. Y.},
 issue = {2},
 journal = {Journal of Plasma Physics},
 month = {Dec},
 note = {0000-0002-0602-0665, HYPER-I (High Density Plasma Experiment-I) is a linear device that combines a wide operation range of plasma production with flexible diagnostics. The plasmas are produced by the electron cyclotron resonance (ECR) heating with parallel injection of right-handed circularly polarized microwaves of 2.45 GHz from the high-field side. The maximum attainable electron density is more than two orders of magnitude higher than the cutoff density of ordinary waves. Spontaneous formation of a variety of large-scale flow structures, or vortices, has been observed in the HYPER-I plasmas. Flow-velocity field measurements using directional Langmuir probes (DLPs) and laser-induced fluorescence (LIF) method have clarified the physical processes behind such vortex formations. Recently, a new intermittent behavior of local electron temperature has also been observed. Statistical analysis of the floating potential changes has revealed that the phenomenon is characterized by a stationary Poisson process.},
 title = {Exploration of spontaneous vortex formation and intermittent behavior in ECR plasmas: The HYPER-I experiments},
 volume = {81},
 year = {2014}
}