Quantum efficiency of a channel electron multiplier in the far ultraviolet

Details Quantum efficiency of a channel electron multiplier in the far ultraviolet Quantum efficiency of a channel electron multiplier in the far ultraviolet

Dec 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apopt..14.2823p&link_type=abstract

Applied Optics, vol. 14, Dec. 1975, p. 2823, 2824.

Physics

Optics

10

Far Ultraviolet Radiation, Photomultiplier Tubes, Quantum Mechanics, Radiation Detectors, Hollow Cathodes, Pressure Effects, Wavelengths

Scientific paper

Variation of the quantum efficiency of a channel electron multiplier (CEM) in the wavelength range from 1200 to 2536 A is studied. Emphasis is on measurement of CEM sensitivity longward of 1500 A. Results indicate an overall rapid decrease in quantum efficiency with increasing wavelength, with little evidence for a possible change in slope in the range from 2000 to 2500 A. The lowest efficiency measured is 4.5 + or -2.5 times 10 to the minus ninth count/photon at 2536 A. These efficiencies should ensure that unwanted radiation longward of 1500 A can be effectively removed from the bandpass of the instrument.

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