R7511 tubes equivalent, photomultiplier tubes.
Sensitivity in the Vacuum Ultraviolet Region R7311.115 to 320nm R7511.115 to 195nm High Quantum Efficiency (at 121.6nm) R7311...17.3% (Typ.) R7511...26.5% (Typ.) High Ano.
Emission Spectroscopy, etc.
TPMSF0077
GENERAL
Parameter R7311 R7511 Spectral Response 115 to 320 115 to 195 Wavelength .
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