使用超短脉冲电子枪开发一种（e,2e）电子动量谱仪。

Development of an (e,2e) electron momentum spectroscopy apparatus using an ultrashort pulsed electron gun.

作者信息

Yamazaki M, Kasai Y, Oishi K, Nakazawa H, Takahashi M

机构信息

Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.

出版信息

Rev Sci Instrum. 2013 Jun;84(6):063105. doi: 10.1063/1.4809792.

DOI:10.1063/1.4809792

PMID:23822331

Abstract

An (e,2e) apparatus for electron momentum spectroscopy (EMS) has been developed, which employs an ultrashort-pulsed incident electron beam with a repetition rate of 5 kHz and a pulse duration in the order of a picosecond. Its instrumental design and technical details are reported, involving demonstration of a new method for finding time-zero. Furthermore, EMS data for the neutral Ne atom in the ground state measured by using the pulsed electron beam are presented to illustrate the potential abilities of the apparatus for ultrafast molecular dynamics, such as by combining EMS with the pump-and-probe technique.

摘要

已开发出一种用于电子动量谱（EMS）的（e，2e）装置，该装置采用重复频率为5kHz且脉冲持续时间为皮秒量级的超短脉冲入射电子束。报告了其仪器设计和技术细节，包括一种寻找时间零点的新方法的演示。此外，还给出了使用脉冲电子束测量的基态中性氖原子的EMS数据，以说明该装置在超快分子动力学方面的潜在能力，例如通过将EMS与泵浦-探测技术相结合。