不同加热方式对金属蒸汽速度分布的影响─—电子枪加热方式和模拟欧姆法的实验研究  

THEEFFECT OF DIFFERENTHEATINGPATTERNS ON THE VELOCITYDISTRIBUTION OF METAL VAPOUR──THE EXPERIMENT ON THE HEATING PATTERN BY ELECTRON GUN AND BY SIMULATED OHM METHOD

作　　者：王永刚[1] 王德武[1] 孔羽飞[1] 严敏[1] 包成玉[1] 应纯同[1] 

机构地区：[1]清华大学工程物理系

出　　处：《核科学与工程》1994年第4期364-367,共4页Nuclear Science and Engineering

基　　金：教委博士点资助项目

摘　　要：从实验上证明了电子枪加热方式中电子束与原子束之间的能量交换，并与模拟欧姆法加热方式进行了比较，测量结果表明：电子束直接轰击靶金属时产生的真空蒸发原子束速度为（５０７±３０）ｍ／ｓ，而模拟欧姆法产生的真空蒸发原子束速度为（４０５±３０）ｍ／ｓ。两者之间的相差约１００ｍ／ｓ。由此可见电子束对原子束的加速作用确实存在。The energy exchange between electron beam and atom beam in the electron gun heating pat-tern is proved by the experiment,and the heating pattern of simulated Ohm method is comparedwith it.The experimental results are:the velocity of the evaporated atom beam in the vacuum by the electron beam bombarding the target metal directly,is 507 ± 30 m/s,and that of Ohm heat-ing pattern is 405 ± 30 m/s. The difference is about 100 m/s. It is shown that the acceleration ofatom beam by electron beam really exists.

关 键 词：速度分布 电子束 原子束 欧姆法 金属蒸汽 

分 类 号：TL503.3[核科学技术—核技术及应用]