深圳大学学报（理工版）2016，Vol.33Issue(6)：593-598,6.DOI:10.3724/SP.J.1249.2016.06593
相同激励下双磁透镜分幅变像管的成像研究
Imaging evaluation of magnetic double-lens framing tube under the same excitation
摘要
Abstract
A large cathode framing tube is designed and developed.Its imaging at a magnification ratio of 1∶1 is investigated by using a magnetic double-lens system with the same excitation.Firstly, based on the imaging formula of thin lens, four imaging situations are analyzed, and the relationship between the positions of the two magnetic lenses and the focal length is derived.Then, resolution plates photo-etched on the cathode micro-stripe are adopted to test the imaging quality of the tube under the four situations.The test results show that 1∶1 imaging with higher image quality occurs only when the double lenses are placed in a few positions.The factors that affect the 1∶1 imaging of the magnetic double-lens system are mainly the magnetization saturation effect of the lens, magnetic-field interference between the ferromagnetic materials of the two lenses, and the lens thickness.关键词
核仪器仪表/超快诊断技术/分幅变像管/双磁透镜/激励条件/成像规律Key words
nuclear instrumentation/ultrafast diagnostic technique/framing tube/magnetic double lenses/excitation condition/imaging rules分类
信息技术与安全科学引用本文复制引用
廖昱博,龙井华,蔡厚智,陈家堉,刘进元..相同激励下双磁透镜分幅变像管的成像研究[J].深圳大学学报（理工版）,2016,33(6):593-598,6.基金项目
National Natural Science Foundation of China(11305107) （11305107）
国家自然科学基金资助项目(11305107) （11305107）
