In the first four years of the LHD experiment, several encouraging results have emerged, the
most significant of which is that MHD stability and good transport are compatible in the …

As the finalization of a hydrogen experiment towards the deuterium phase, the exploration of
the best performance of hydrogen plasma was intensively performed in the large helical …

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× 10 …

Divertor plasma characteristics in the Large Helical Device (LHD) have been investigated
mainly by using Langmuir probes. The three-dimensional structure of the helical divertor …

A negative-ion-based neutral beam injection (NBI) system, in which large caesium-seeded
negative-ion sources are utilized, has operated reliably in the Large Helical Device (LHD) …

Neoclassical transport is studied for large helical device (LHD) configurations in which the
magnetic axis has been shifted radially by determining the mono-energetic transport …

A novel method to obtain the full neoclassical transport matrix for general toroidal plasmas
by using the solution of the linearized drift kinetic equation with the pitch-angle-scattering …

Classical novae emit gamma-ray radiation at 511 keV and below (with a cutoff at around 20–
30 keV), related to positron annihilation and its Comptonization in the expanding envelope …

Recent experimental results in the Large Helical Device have indicated that a large pressure
gradient can be formed beyond the stability criterion for the Mercier (high-n) mode. While the …

A multi-pellet injector system has been developed as a fundamental fueling tool for the
Large Helical Device (LHD). Since a primary goal of the LHD project is demonstration of …