Design Near-threshold Photoelectron Imaging Spectrometer Based on UV Laser Induced Photoelectron Emission Anion Source
文献类型：期刊论文
| 作者 | Qin, Zheng-bo; Wu, Xia; Tang, Zi-chao |
| 刊名 | chinese journal of chemical physics
 |
| 出版日期 | 2013-12-01 |
| 卷号 | 26期号:6页码:774-779 |
| 关键词 | Threshold photoelectron imaging Dissociative photoelectron attachment Laser induced photoelectron emission |
| 英文摘要 | we have developed a compact photoelectron imaging facility, including an anion source with dissociative photoelectron attachment to molecules, a linear time-of-flight mass spectrometry (tofms), and an orthogonal high-resolution threshold photoelectron velocity map imaging spectrometer (vmi). intense and cold cluster anions were prepared in photoelectron-attachment processes upon pulsed uv laser ablation of metal target. combining this anion source with tofms-vmi, the achieved mass resolution is about 200, and the electron kinetic energy resolution is better than 3%, i.e., 30 mev for 1 ev electrons. more importantly, low-energy photoelectron imaging spectra for ch3s- and s-2(-) at 611.46 nm are obtained. in both cases, the refined electron affinities are determined to be 1.8626 +/- 0.0020 ev for ch3s and 1.6744 +/- 0.0035 ev for s-2, respectively. preliminary results suggest that the apparatus is a powerful tool for estimating precise electron affinities values from threshold photoelectron imaging spectroscopy. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | physics, atomic, molecular & chemical |
| 研究领域[WOS] | physics |
| 关键词[WOS] | high-resolution photodetachment ; bottle electron spectrometer ; mass-spectrometry ; cluster anions ; negative-ions ; organic-compounds ; soft-ionization ; spectroscopy ; affinities ; ch3s |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000330591600022 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/137927]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qin, Zheng-bo,Wu, Xia,Tang, Zi-chao. Design Near-threshold Photoelectron Imaging Spectrometer Based on UV Laser Induced Photoelectron Emission Anion Source[J]. chinese journal of chemical physics,2013,26(6):774-779. |
| APA | Qin, Zheng-bo,Wu, Xia,&Tang, Zi-chao.(2013).Design Near-threshold Photoelectron Imaging Spectrometer Based on UV Laser Induced Photoelectron Emission Anion Source.chinese journal of chemical physics,26(6),774-779. |
| MLA | Qin, Zheng-bo,et al."Design Near-threshold Photoelectron Imaging Spectrometer Based on UV Laser Induced Photoelectron Emission Anion Source".chinese journal of chemical physics 26.6(2013):774-779. |
入库方式： OAI收割
来源：大连化学物理研究所
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