"A compact cesium deposition system was used for direct deposition of cesim atoms and ion onto the inner surface of the 1/3 scale Hydrogen Negative Ion Source for the LHD-NBI system. A small, well defined amount of cesium deposition in the range of 3-200 mg was tested. Negative ion extraction and acceleration were carried out both in the pure hydrogen operation mode and in the cesium mode. Single Cs deposition of 3-30 mg to the plasma chamber have produced temporary 2-5 times increases of H- yield, but the yield was decreased within several discharge pulses to the previous steady-state value. Two consecutive 30 mg depositions done within a 3-5 hours/ 60 shot interval, produced a similar temporary increase of H- beam, but reached a larg...
The development of large and powerful RF sources for negative hydrogen and deuterium ions is mandato...
International audienceThe functions of a biased plasma grid of a negative hydrogen (H-) ion source f...
International audienceA high production rate of negative hydrogen ion was observed from a nanoporous...
"Cesium recovery from the polluted layers in the 1/3 scale hydrogen negative ion source for LHD-NBI ...
The work is dedicated to the theoretical and experimental investigation of the intensive H-volume-pl...
The fusion experiment ITER requires powerful neutral beam injection (NBI) systems for heating and cu...
This paper is a review of research effected on negative ion plasma-surface sources in the Institute ...
High power density of hydrogen negative ion beams with over 70 MW/m2 at the energy of 500 keV has be...
Effective production of hydrogen negative ions (H-) is one of the important issues in high power neu...
The state of hydrogen plasma in the extraction region in a hydrogen negative-ion (H−) source for NBI...
International audienceNegative hydrogen or deuterium ions are the precursor particles used to genera...
The injection of fast neutral particles (NBI) into a fusion plasma is an important method for plasma...
Long pulse operation of H- negative ion beams having energies of 0.5 MeV with the current density of...
Protection system of cathodes from local discharge has been developed for the high power and stable ...
International audienceA study was conducted on the properties of molybdenum implanted with caesium a...
The development of large and powerful RF sources for negative hydrogen and deuterium ions is mandato...
International audienceThe functions of a biased plasma grid of a negative hydrogen (H-) ion source f...
International audienceA high production rate of negative hydrogen ion was observed from a nanoporous...
"Cesium recovery from the polluted layers in the 1/3 scale hydrogen negative ion source for LHD-NBI ...
The work is dedicated to the theoretical and experimental investigation of the intensive H-volume-pl...
The fusion experiment ITER requires powerful neutral beam injection (NBI) systems for heating and cu...
This paper is a review of research effected on negative ion plasma-surface sources in the Institute ...
High power density of hydrogen negative ion beams with over 70 MW/m2 at the energy of 500 keV has be...
Effective production of hydrogen negative ions (H-) is one of the important issues in high power neu...
The state of hydrogen plasma in the extraction region in a hydrogen negative-ion (H−) source for NBI...
International audienceNegative hydrogen or deuterium ions are the precursor particles used to genera...
The injection of fast neutral particles (NBI) into a fusion plasma is an important method for plasma...
Long pulse operation of H- negative ion beams having energies of 0.5 MeV with the current density of...
Protection system of cathodes from local discharge has been developed for the high power and stable ...
International audienceA study was conducted on the properties of molybdenum implanted with caesium a...
The development of large and powerful RF sources for negative hydrogen and deuterium ions is mandato...
International audienceThe functions of a biased plasma grid of a negative hydrogen (H-) ion source f...
International audienceA high production rate of negative hydrogen ion was observed from a nanoporous...