夫兰克-赫兹实验中几个问题的研究  

Research on the Franck-Hertz experiment

作　　者：董键[1] 李咏梅[2] 崔秀芝[1] 

机构地区：[1]曲阜师范大学物理工程学院,山东曲阜273165 [2]济宁学院物理系,山东曲阜273165

出　　处：《物理实验》2008年第10期36-39,共4页Physics Experimentation

摘　　要：测量了F-H实验中控制电压的敏感区,观测了3种不同电路下汞原子的电离曲线并对其成因进行了解释.观测了电离情况下板极电流与反射电压的关系,阐明了在高反射电压下电子在第二栅极附近聚集会增加离子的复合概率.观测了两栅极之间处于"悬浮"状态时板极电流的不稳定,反映了电子和离子扩散的随机性与噪声电压的影响.The sensitive range of controlling voltage of Franck-Hertz apparatus is measured, the ionization curves are measured using three kinds of circuit. The relationship between plate electrode current and controlling voltage is observed, and this is helpful to explain the increase in combination probability of electon and ion around the second grid-electrode at high reflector voltage. When the two grid-electrodes are ＂floating＂, the unstability of plate electrode current is measured to indicate the random diffusion of electrons and ions and the existence of voltage noise.

关 键 词：F-H实验 控制电压 板极电流 电离 反射电压 紫外线 

分 类 号：O562.4[理学—原子与分子物理]