title: Observation of stable superdense core plasmas in the large helical device.
abstract: In reduced recycling discharges in the Large Helical Device, a super dense core plasma develops when a series of pellets are injected. A core region with density as high as 4.5 x 10(20) m(-3) and temperature of 0.85 keV is maintained by an internal diffusion barrier with very high-density gradient. These results may extrapolate to a scenario for fusion ignition at very high density and relatively low temperature in helical devices.
authors.affiliation: National Institute for Fusion Science, Toki 509-5292, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Ohyabu
authors.forename: T
authors.initials: T
authors.lastname: Morisaki
authors.forename: S
authors.initials: S
authors.lastname: Masuzaki
authors.forename: R
authors.initials: R
authors.lastname: Sakamoto
authors.forename: M
authors.initials: M
authors.lastname: Kobayashi
authors.forename: J
authors.initials: J
authors.lastname: Miyazawa
authors.forename: M
authors.initials: M
authors.lastname: Shoji
authors.forename: A
authors.initials: A
authors.lastname: Komori
authors.forename: O
authors.initials: O
authors.lastname: Motojima