用金属电子逸出功测定仪做设计性扩展实验的实践  

A survey of the extended design experiments on the apparatus for measuring tungsten's work function

作　　者：钱仰德[1] 

机构地区：[1]南京工程学院物理实验室,南京210013

出　　处：《物理实验》2001年第7期14-17,共4页Physics Experimentation

摘　　要：介绍利用金属电子逸出功测定仪研究轴向磁场对自由电子的磁控条件及测定电子比荷、研究真空二极管的伏安特性、研究金属中自由电子的费米 -狄拉克能量分布状况等设计性扩展实验的内容和方法 .This paper deals with the experiment and the methods of performing the extended design experiments on the apparatus for measuring tungsten's work function,including a study of the magnetic control condition of the axial magnetic field for the free electrons,a test of the specific charge of electrons,a research into the volt ampere characteristics of the two electrode tube,and an investigation of the Fermi Dirac distribution of free electrons.

关 键 词：扩展实验 自由电子 比荷 费米-狄拉克分布 金属电子逸出功测定仪 高校 物理实验 

分 类 号：O442[理学—电磁学] O4－33[理学—物理]