RUI: Spectroscopy and Structure of Negative Ions

RUI：负离子的光谱学和结构

• 批准号: 0140233
• 负责人: C Walter
• 金额: $ 22.45万
• 依托单位: Denison University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0140233&HistoricalAwards=false
• 关键词: RUI; Spectroscopy; Structure; Negative; Ions

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.

该项目重点研究两个系列实验中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接近阈值的高精度光脱离横截面。 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，其中新出现的电子的波函数被电场电势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静电对新发现的 Os- 独特激发态的影响。 第二系列的补充实验将并行进行。 使用先进光源 (ALS) 作为高能光子源，将研究 C- 和 B- 的内壳光分离。