论文部分内容阅读
本文介绍了光电阴极金属网导电基底的作用原理和制备工艺,并在同一型式快门变像管JTG305—2像管)中比较了金属网导电基底和钯导电基底的优劣,说明了金属网导电基底的优越性。原钯导电基底的像管130ns下的动态空间分辨率为10—131p/mm,改用压制镍网(33线/mm)导电基底后70ns下动态空间分辨率为8—10/1pmm,30ns下达3—41p/mm,其动态范围为128,而且图像畸变显著减小。钯导电基底透过率差(为30％左右,光电阴极灵敏度一般为30pa/1m左右,而镍网导电基底透过率高(45—50％),阴极灵敏度一般为80μa/1m左右,并可达100μa/1m以上,并且由于压制网格时对光电阴极曲率半径的校正作用,像管空间分辨率稳定,成活率高。根据20ns,0.53μm单次脉冲激光照明与等待型变像管测试结果(空间分辨率11—121p/mm),说明该像管还大有潜力可挖。
This paper describes the principle and preparation of photocathode conductive network substrate, and in the same type of shutter CRT JTG305-2 image tube) compared the advantages of metal mesh conductive substrate and palladium conductive substrate, indicating the metal mesh conductive The superiority of the substrate. The dynamic spatial resolution of the original palladium conductive tube under 130ns is 10-131p / mm, and the dynamic spatial resolution at 70ns is 8-10 / 1 pmm, 30ns instead of using pressed nickel mesh (33 lines / mm) 3-41p / mm, its dynamic range is 128, and image distortion is significantly reduced. The conductivity of palladium conductive substrate is poor (about 30%, the photocathode sensitivity is generally about 30pa / 1m, while the nickel mesh conductive substrate high transmittance (45-50%), the cathode sensitivity is generally about 80μa / 1m, and Up to 100μa / 1m, and because of the correction of the photocathode's curvature radius when the grid is pressed, the image tube has a stable spatial resolution and a high survival rate.According to 20ns, 0.53μm single-pulse laser illumination and waiting tube test results (Spatial resolution 11-121p / mm), indicating that the image tube has great potential to dig.