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Expression for the angular dependence in the quantum efficiency of a skinny multi-alkali photocathode and its optical QualitiesA different form of radio frequency (RF) timing system is introduced. It is predicated on a helical deflector, which performs circular or elliptical sweeps of Picture- or secondary electrons, accelerated to keV energies, vi

Distinctive crystalline resources are incredibly different regarding their hardness as well as other Attributes, which decide with which approaches and how easily they may be Slice and polished with high quality.人造红宝石激光晶体是首次实现激光输出的材料。可用焰熔法、提拉法或助熔剂法生产单晶。用提拉法容