The influence of photocathode resistance and space charge on the resolution of magnetic focus systems
The influence of photocathode resistance and space charge on the resolution of magnetic focus systems
Many image converter tubes exhibit decreasing resolution with decreasing exposure time, when they are used for the observation of high-speed phenomena. This effect is mainly caused by the resistance of the photocathode and the relatively high space-charge density due to high photoelectron currents w...
| Personal Name(s): | Hopmann, W. (Corresponding author) |
|---|---|
| Contributing Institute: |
Publikationen vor 2000; PRE-2000; Retrocat |
| Imprint: |
Jülich
Kernforschungsanlage Jülich, Verlag
1966
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| Physical Description: |
9 p. |
| Document Type: |
Report Book |
| Research Program: |
Addenda |
| Series Title: |
Berichte der Kernforschungsanlage Jülich
466 |
| Link: |
OpenAccess OpenAccess |
| Publikationsportal JuSER |
|
Many image converter tubes exhibit decreasing resolution with decreasing exposure time, when they are used for the observation of high-speed phenomena. This effect is mainly caused by the resistance of the photocathode and the relatively high space-charge density due to high photoelectron currents with very short exposure times. During investigations into the performance of the image section of an image orthicon as a high speed shutter, [...] these effects have been observed and a quantitative description has been developed. The results of such a calculation are helpful in distinguishing whether the loss of resolution is caused by the tube alone or by other factors, for example the incorrect shape of the shutter pulse. |