Prümper G, Fukuzawa H, Lischke T, Ueda K
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan.
Rev Sci Instrum. 2007 Aug;78(8):083104. doi: 10.1063/1.2774823.
We describe a momentum resolving time-of-flight ion mass spectrometer that combines a high mass resolution, a velocity focusing condition for improved momentum resolution, and field-free conditions in the source region for high resolution electron detection. It is used in electron-ion coincidence experiments to record multiple ionic fragments produced in breakup reactions of small to medium sized molecules, such as F(3)SiCH(2)CH(2)Si(CH(3))(3). These breakup reactions are caused by soft x rays or intense laser fields. The ion spectrometer uses pulsed extraction fields, an electrostatic lens, and a delay line detector to resolve the position. Additionally, we describe a simple analytical method for calculating the momentum from the measured hit position and the time of flight of the ions.
我们描述了一种动量分辨飞行时间离子质谱仪，它结合了高分辨率质量、用于提高动量分辨率的速度聚焦条件以及源区的无场条件以实现高分辨率电子检测。它用于电子 - 离子符合实验，以记录中小分子（如F(3)SiCH(2)CH(2)Si(CH(3))(3)）分解反应中产生的多个离子碎片。这些分解反应由软X射线或强激光场引起。该离子光谱仪使用脉冲提取场、静电透镜和延迟线探测器来分辨位置。此外，我们描述了一种简单的分析方法，用于根据测量的撞击位置和离子的飞行时间计算动量。
