反应显微成像谱仪动量及能量分辨因素分析

在对反应显微成像谱仪的工作原理作简要介绍的基础上,全面分析了各种可能影响动量分辨的因素,并结合反应显微成像谱仪的技术参数分别对反冲离子动量分辨以及电子动量与能量分辨进行了详细计算和讨论,确定了反应显微成像谱仪的动量及能量分辨,并为进一步提高分辨提供了重要依据. 关键词： 动量分辨 能量分辨 反应显微成像谱仪 动量成像原理

Analysis of momentum and energy resolutions of the reaction microscope

Based on the working principle of the reaction microscope and the technical parameters employed in our setup, all the possible factors which affect the momentum resolutions of the recoil-ions and the electrons are analyzed. The resolution dependences on the parameters are discussed in detail. The target extension is critical to the momentum and energy resolutions. For electrons the energy resolution is sensitive to the momentum anti-parallel to the extraction electric field: the larger the momentum, the worse the resolution is. The results are applicable to both longitudinal and transverse reaction microscopes.