The perpendicular spectrum of high-energy particles originally injected tangentially was measured using a neutral particle analyzer (NPA) based on a natural diamond detector (NDD) in the Large Helical Device (LHD). The steady state spectrum showed the dependence on the magnetic configuration, indicating the effect of the orbit loss. An analytical asymptotic solution of the Fokker-Planck equation, taking into account collision terms of coulomb interaction, the fast-ion source term and the orbit loss of the helically trapped and transition particles, is proposed
The neutralization effect for energetic protons in Large Helical Device (LHD) was estimated from the...
The neutral beam (NB) fast ion confinement in the Large Helical Device (LHD) is studied for several ...
A horizontal, vertical, and radial high-energy particle distribution measurement system, which consi...
"The confinement property of high energy ions and the role of ripple induced transport have been stu...
In this study, using a scintillator-based lost fast-ion probe, we have measured fast-ion losses in t...
Energetic tail formation by ion-cyclotron-range-of-frequencies (ICRF) heating was studied in the lar...
In a helical device, the particle loss by the resonance between the ∇B drift and the E × B drift is ...
In magnetic confinement devices, it is required that fast ions, such as heating ions and alpha par...
High-energy particle measurement is important for an ion temperature monitor, the study of the high-...
An experimental technique to investigate fast ion confinement based on charge exchange spectroscopy ...
Time-resolved measurements of the energetic ion distribution from different viewing angles allow stu...
A high-energy neutral particle measurement is one of the important diagnostics for ion temperature a...
"Fast ion orbits for helical magnetic axis configurations in LHD (Large Helical Device) are analyzed...
Effective ion heating and good fast ion confinement are essential for ignition. Therefore the influe...
"This paper reports on the behavior of high-energy ions produced by Ion Cyclotron Range of Frequency...
The neutralization effect for energetic protons in Large Helical Device (LHD) was estimated from the...
The neutral beam (NB) fast ion confinement in the Large Helical Device (LHD) is studied for several ...
A horizontal, vertical, and radial high-energy particle distribution measurement system, which consi...
"The confinement property of high energy ions and the role of ripple induced transport have been stu...
In this study, using a scintillator-based lost fast-ion probe, we have measured fast-ion losses in t...
Energetic tail formation by ion-cyclotron-range-of-frequencies (ICRF) heating was studied in the lar...
In a helical device, the particle loss by the resonance between the ∇B drift and the E × B drift is ...
In magnetic confinement devices, it is required that fast ions, such as heating ions and alpha par...
High-energy particle measurement is important for an ion temperature monitor, the study of the high-...
An experimental technique to investigate fast ion confinement based on charge exchange spectroscopy ...
Time-resolved measurements of the energetic ion distribution from different viewing angles allow stu...
A high-energy neutral particle measurement is one of the important diagnostics for ion temperature a...
"Fast ion orbits for helical magnetic axis configurations in LHD (Large Helical Device) are analyzed...
Effective ion heating and good fast ion confinement are essential for ignition. Therefore the influe...
"This paper reports on the behavior of high-energy ions produced by Ion Cyclotron Range of Frequency...
The neutralization effect for energetic protons in Large Helical Device (LHD) was estimated from the...
The neutral beam (NB) fast ion confinement in the Large Helical Device (LHD) is studied for several ...
A horizontal, vertical, and radial high-energy particle distribution measurement system, which consi...