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题名: Note: A simple method to suppress the artificial noise for velocity map imaging spectroscopy
作者: Qin, Zhengbo1;  Li, Chunsheng1;  Qu, Zehua1;  Tang, Zichao2
刊名: REVIEW OF SCIENTIFIC INSTRUMENTS
发表日期: 2015-04-01
DOI: 10.1063/1.4916716
卷: 86, 期:4
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Instruments & Instrumentation ;  Physics, Applied
研究领域[WOS]: Instruments & Instrumentation ;  Physics
英文摘要: A simple method has been proposed to suppress artificial noise from the counts with respect to the central line (or point) for the reconstructed 3D images with cylindrical symmetry in the velocity-map imaging spectroscopy. A raw 2D projection around the z-axis (usually referred to as central line) for photodetachment, photoionization, or photodissociation experiments is pre-processed via angular tailored method to avoid the signal counts distributed near the central line (or point). Two types of photoelectron velocity-map imaging (O- and Au-center dot NH3) are demonstrated to give rise to the 3D images with significantly reduced central line noise after pre-processing operation. The major advantages of the pre-operation are the ability of suppression of central-line noise to resolve weak structures or vibrational excitation in atoms or molecules near photon threshold. (C) 2015 AIP Publishing LLC.
关键词[WOS]: NEGATIVE-IONS ;  PHOTOELECTRON ;  DYNAMICS ;  EXPANSION
语种: 英语
WOS记录号: WOS:000353837700067
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146232
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Anhui Normal Univ, Dept Phys, Wuhu 241000, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China

Recommended Citation:
Qin, Zhengbo,Li, Chunsheng,Qu, Zehua,et al. Note: A simple method to suppress the artificial noise for velocity map imaging spectroscopy[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2015,86(4).
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