ION-BOMBARDMENT-RESISTANT GLASS COMPOSITION, MICROCHANNEL PLATE CLADDING GLASS, MICROCHANNEL PLATE AND PREPARATION METHOD

An ion-bombardment-resistant glass composition, microchannel plate skin glass, a microchannel plate and a preparation method. By means of the cooperation of components and the adjustment of the amounts thereof, especially by introducing a scandium-containing and/or strontium-containing and/or zirconium-containing and/or molybdenum-containing oxide with a high single bond energy into a glass material, the surface binding energy of the glass material is improved while necessary properties desired for glass, such as a good crystallization resistance, a good acid and alkali resistance, an appropriate softening temperature, the expansion coefficient and the bulk resistance, are satisfied, the ion bombardment resistance of the microchannel plate skin glass material is thus improved, and therefore, the service life of the microchannel plate can be substantially prolonged when high-energy ions are directly detected.