4,886 research outputs found
Diagnostics of Plasma with Negative Ions Using the Eclipse Laser Photodetachment Method in Divertor Simulator MAP-II in the Univ. Tokyo
<Advanced Energy Generation Division> Complex Plasma Systems Research Section
3-1. Research Activities in 202
Measurement of the Non-Parallel Flow Velocity Using a Mach Probe in Divertor- Simulating Weakly Magnetized Plasmas (NIFS04KOAB009)
Development of Laser Thomson Scattering System Applicable to Low Temperature Recombining Plasmas in Divertor Simulator MAP-II in the Univ. Tokyo
Laser Thomson scattering system applicable to low-temperature plasma in the divertor simulator MAP-II
Laser Thomson Scattering Diagnostics for Low Temperature Recombining Plasmas in MAP-II Divertor Simulator at the Univ. Tokyo
Measurements of poloidal rotation velocity using charge exchange spectroscopy in a large helical device
Absolute measurements of poloidal rotation velocity with the accuracy up to 1 km/s (2 pm in wavelength) were done using charge exchange spectroscopy in a large helical device. Radial profiles of the absolute Doppler shift of charge exchange emission with a beam are obtained from spectra measured with four sets of optical fiber arrays that view downward and upward at the poloidal cross section with and without neutral beam injection. By arranging the optical fiber from four arrays close to each other at the entrance slit, the apparent Doppler shift due to aberrations of the spectrometer and due to interference of the cold component (the charge exchange between He-like oxygen and thermal neutrals 8 pm from the charge exchange emission with a beam) can be eliminated from the measurements. The measured poloidal rotation velocity is 1 3 km/s in the electron diamagnetic direction at half of the plasma minor radius
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