高分辨快电子能量损失谱仪的能量损失谱测量和控制获取系统  

System of Energy Loss Spectrum Measurement,Controlling and Data Acquisition of High-Resolution Fast-Electron Energy Loss Spectrometer

作　　者：凤任飞[1] 武淑兰[1] 张芳[1] 徐克尊[1] 邱实[2] 卓惠祥 

机构地区：[1]中国科学技术大学近代物理系,合肥230027 [2]中国科学院上海原子核研究所,201800

出　　处：《核电子学与探测技术》1995年第5期261-264,共4页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金重大项目;八五"攀登计划"和中国科学重大项目资助课题

摘　　要：本文介绍了高分辨快电子能量损失谱仪(EELS)的能量损失谱测量系统。微机通过 RS-232串行通讯口,经过高压光纤和光电耦合器。控制两台浮置于不同高压电位上的扫描高压电源进行同步等值扫描,同时由通道电子倍增器接收到的电子脉冲信号经由放大、甄别后被多定标系统记录。从而得到电子能量损失谱。A system of energy sepctrum measurement,controlling and data acquisition of high-resolution fast-elec- tron energy loss sepctrometer are introduced in this paper.Through the RS-232 seriea-communication port, high-voltage phototrack and photoelectric coupling,the microcomputer controls two high-voltage power sup- plies floated on different high potentials to scan at the same value synchronously.The electron pulse signals are detected by the channel electron multiplier.After amplification and discrimination,these signals are recorded by a multiacaler system.

关 键 词：电子能量损失谱仪 通道电子倍增器 计算机 扫描电源 多定标 

分 类 号：TL81[核科学技术—核技术及应用]