... glass, double-alkali photocathode Features: Diameter of 28.5mm(1.12 inch), nine stage ... analyzer, X-ray camera timer, optical density meter, optical properties to identify,replicate equipment. General ... data: Spectral Response Range300~680nmWavelength of Maximum Response 420nmMinimum effective AreaΦ28.5mmDynodeStructureRing FocusedNumber of ...