Development of a pulsed electron gun for ultrafast electron inelastic scattering experiments

在这项研究中，为了将超短脉冲电子束技术应用于电子非弹性散射实验，我们开发了一种新的脉冲电子枪，具有小的动能分布，同时保持其持续时间适用于实时观察化学反应。结果表明，所研制的电子枪成功地产生了能量宽度小于电子激发能量（c）的电子脉冲。a. 5eV）的典型简单分子。该电子枪在强度和能宽方面都达到了预期的性能。

In this study, in order to apply ultrashort pulsed electron beam techniques to electron inelastic scattering experiments, we have developed a new pulsed electron gun having a small kinetic energy distribution, while keeping its duration applicable to a real-time observation of chemical reactions. As a result, the developed electron gun is successful in producing electron pulses whose energy width is less than electronic excitation energies(c. a. 5 eV)of typical simple molecules. The electron gun has shown the expected performance in its intensity as well as in the energy width.