采用玻璃多纤维拉制(GMD)技术研制并批量生产了微小通道(孔径4-5 μm)还原铅硅酸盐玻璃微通道板(MCP),空间分辨率达到95 lp/mm。优选皮芯实体边玻璃组合,解决了小通道实体边MCP制板过程中发生变形、破裂的难题;开发新的拉丝设备和技术以及细小直径单纤维的排棒、复式纤维的排屏工艺和相应的技术设备,保证单复丝拉制过程中纤维的尺寸误差不大于0.5%,解决了MCP增益的均匀性难题,实现了两步法拉丝制作孔径5 μm以下MCP的工艺方法,制作的MCP平均孔径5 μm,厚度为0.25 mm,增益大于1×10⁴ (900 V)。

The reducing lead silicate glass microchannel plate (MCP) with 4-5 μm channel is produced by the glass multifiber draw (GMD) technology,and its resolution is 95 lp/mm. The crack and twist of MCP during production can be avoided by optimizing the glass group of the skin,core and solid border. The dimensional error of fiber is within 0.5% during fiber-drawing by developing new fiber-drawing machines and techniques,arranging slender-diameter mono-fiber and multi-fiber stick. By these ways,the problem of gaining uniformity of MCP is solved. MCPs with less than 5 μm channels were made by the method of two-step stick-drawing. The channel diameter of MCP is 5 μm,thickness is 0.25mm,and gain is 1×10⁴ (900 V) on average.