ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
To obtain high-flux hydrogen atoms equivalent to the irradiation condition at the surface of the first-wall or divertor plate in a nuclear fusion reactor, a new microwave ion source was constructed and its operation was demonstrated. The source was designed so that H3+ ions are efficiently produced through the ion-molecule reaction between H2+ ions and H2 molecules. Extracted ion beams were mass analyzed and pure H3+ ions were introduced into the ultrahigh-vacuum target chamber. The obtainable irradiation current of H3+ ions was 1.5 mA at 3 keV. The beam diameter at the target was about 1 cm. Maximum flux density of hydrogen atoms at an energy of 1 keV exceeded 4×1016 H/cm2 s, which is high enough for plasma-wall interaction studies.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1143348
