Abstract
The efficiency of thin foils which are used for charge state modification, start/stop pulse triggering, and UV shielding in space plasma diagnostic instrumentation is highly sensitive to pinholes in the foil. In this study, we present a high resolution method to map pinhole locations and sizes in thin foils based on the different transmission properties of incident ions through holes and hole-free regions of the foil. Results are presented for 200-eV ions transmitted through 0.2-, 0.5-, and 1.0-μg/cm2 carbon foils. Acceleration of transmitted ions into the imaging detector increases both the imaging resolution and the contrast between holes and hole-free regions of the foil.
Original language | English (US) |
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Pages (from-to) | 4741-4743 |
Number of pages | 3 |
Journal | Review of Scientific Instruments |
Volume | 63 |
Issue number | 10 |
DOIs | |
State | Published - 1992 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Instrumentation