DocumentCode :
1031436
Title :
An enhancement of ion energy spectra resolution and sensitivity in a multigridded energy analyzer with a retarding grid potential: the variable energy analyzer (VEA)
Author :
Leal-Quiros, Edbertho ; Prelas, Mark A.
Author_Institution :
Dept. of Nucl. Eng., Missouri Univ., Columbia, MO, USA
Volume :
16
Issue :
6
fYear :
1988
Firstpage :
661
Lastpage :
666
Abstract :
An energy analyzer was developed that allows enhanced resolution of ion energy spectra and sensitivity. The energy analyzer is based on the principles of electrostatic multigrid ion or electron energy analyzers. Studies indicate that geometrical parameters such as grid separation, the grid transparency, and the spatial charge all influence the characteristic curve of the analyzer (typically a plot of collector current versus the retarding potential on the discriminator grid of the analyzer). Through the adjustment of these parameters, the resolution and the sensitivity of the analyzer is improved by a factor of two. It was found that there was an optimum separation distance between the two grids where the analyzer provides optimal resolution.<>
Keywords :
beam handling equipment; ion optics; mass spectrometer components and accessories; characteristic curve; collector current; discriminator grid; electrostatic multigrid; enhancement; geometrical parameters; grid separation; grid transparency; ion energy spectra resolution; multigridded energy analyzer; optimal resolution; retarding grid potential; retarding potential; sensitivity; spatial charge; variable energy analyzer; Electrons; Energy measurement; Energy resolution; Plasma measurements; Plasma temperature; Prototypes; Spatial resolution; Temperature measurement; Temperature sensors; Testing;
fLanguage :
English
Journal_Title :
Plasma Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-3813
Type :
jour
DOI :
10.1109/27.16555
Filename :
16555
Link To Document :
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