Abstract
Photoelectron collection efficiency for 3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine (PDT) photocathode in pure Methane and in Argon Methane gas mixtures at different rations i.e. 50:50, 80:20 and 90:10 against decreased electric field and photons of wavelength ranging from 190nm to 230nm has been presented. Maximum QE reaches to ~95%, ~94 and ~95 of vacuum QE respectively in charge multiplication mode. These values are achieved at approximately E/p = 3.5 V/cm.Torr, 2.5 V/cm.Torr and 2 V/cm.Tor at 190 nm respectively. Similar QE are achieved E/p = 4.1 V/cm.Torr, 2.7 V/cm.Torr and 2.2 V/cm.Torr respectively at 230 nm.
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