Gas Desorption of Inner Coating Materials Used for Cathode Ray Tube after Electron Beam Irradiation (第45回真空に関する連合講演会プロシーディングス--2004年10月27日〜29日,大阪) Gas Desorption of Inner Coating Materials Used for Cathode Ray Tube after Electron Beam Irradiation

For inner coating material of cathode ray tube (CRT), the effect of an electron beam irradiation on the gas desorption was examined by using thermal desorption spectroscopy. The major species desorbed from the electron-irradiated sample were CO2 and H2O in the temperature range below 1000 K. Compared with the spectra of un-irradiated sample, the desorption rates of H2O and CO2 in the irradiated sample largely decreased in the lower temperature region. The residual gases amounts of H2O and CO2 decreased with increase of electron energy. For example, the residual gas amounts in the sample irradiated by electron beam with energy of 2 keV were a factor of three smaller than those un-irradiated sample. The surface morphology of the irradiated sample showed more porous structure, compared with that of the un-irradiated sample.