Some Measurements of the Efficiency for Observing Photoelectrons in Image Intensifiers

Journal Article · Fri Jun 01 04:00:00 EDT 1962 · IRE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/TNS2.1962.4316001· OSTI ID:4820533

Waters, J. R.; Reynolds, G. T.; Scarl, D. B.; Zdanis, R. A.

A method is described for measuring the efficiency with which photoelectrons can be detected in an image intensifier system. A weak light is shone onto the first cathode and the photoelectron current measured. The light is then attenuated by a large known factor and compared with the number of spots observed in a given time. A simple system was used to demonstrate this method; a maximum efficiency of 85% was achieved. The results of experiments with a filament scintillation chamber and a Cerenkov detector using image intensifiers are discussed and yield some information about the electron detection efficiency. A simple method of finding the detection threshold is also mentioned with two typical examples of its results.

• Research Organization: Princeton Univ., N.J.
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-023906
• OSTI ID: 4820533
• Journal Information: IRE Transactions on Nuclear Science, Journal Name: IRE Transactions on Nuclear Science Journal Issue: 3 Vol. 9; ISSN 0096-2015
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CATHODES
CHERENKOV COUNTERS
EFFICIENCY
ELECTRONS
ENGINEERING AND EQUIPMENT
IMAGES
MEASURED VALUES
PHOTOELECTRIC EFFECT
SCINTILLATION CHAMBERS
SCINTILLATION COUNTERS