RUI: Spectroscopy and Structure of Negative Ions

本项目通过两个系列的实验研究光子与负离子的相互作用。 第一项研究将使用交叉千伏离子束/可调谐激光方法来测量静电场中阈值附近的高精度光剥离截面。 I-和Bi-都将在高达几kV/cm的电场中进行研究，以表征再散射效应，其中新兴电子的波函数被电场电位反射并被现在中性的原子核散射。 随后，教师和学生研究人员将研究对新发现的独特的激发态的静电效应。 第二个系列的补充实验将同时进行。 使用先进光源（ALS）作为高能量光子的来源，从C-和B-的内壳光剥离将被研究。

This project focuses on the study of the interactions of photons with negative ions in two series of experiments. The first studies will use the crossed kilovolt ion beam/tunable laser method to measure high precision photodetachment cross sections near threshold in a static electric field. Both I- and Bi- will be studied in electric fields up to several kV/cm to characterize rescattering effects in which the emerging electron's wavefunction is reflected by the electric field potential and scattered by the now neutral atomic core. Subsequently, the faculty and student researchers will investigate static electric effects on the newly discovered unique excited states in Os-. The second series of complementary experiments will proceed in parallel. Using the Advanced Light Source (ALS) as a source of high energy photons, inner-shell photodetachment from C- and B- will be investigated.