ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
The design and operation of a neutral-hydrogen flux detection system is described. The central feature of the detector is an inductively driven electron cyclotron resonance heated (ECRH) discharge, which functions as the neutral-flux ionizer. The prominent features of the ionizer are its small (5×3×3 cm3) size and excitation of the ECRH mode using a 200-W, 30-MHz rf driver and static magnetic field level near 30 G. The ability of the system to ionize 910-eV neutral-hydrogen fluxes with subsequent detection in a high resolution energy analyzer is shown. The detection efficiency of the ionizer was found to be ≈6×10−4, based on scattering and charge exchange cross sections measured using a methane charge exchange cell. The ionizer has potential applications in angle-resolved reflected neutral-flux measurements and in beam-plasma interaction analysis.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1141606
