基于阈值光电子-光离子符合技术的分子离子光谱和解离动力学研究

唐小锋; 牛铭理; 周晓国; 刘世林

doi:10.7498/aps.59.6940

摘要

对电子和离子同时采用速度聚焦电场收集的阈值光电子-光离子符合成像谱仪能够有效提高电子的收集效率和能量分辨率.利用该符合成像谱仪,开展了Xe/Ar/Ne 惰性混合气体及NO 分子的阈值光电子谱、阈值光电子-光离子符合质谱和质量选择的符合光谱等实验研究,精确测量了NO 分子的电离势,并且获得了NO+离子振动态分辨的X1Σ+,c3Π和B1

关键词:

In a recently built threshold photoelectron-photoion coincidence spectrometer, the photoelectrons and photoions were velocity-focused simultaneously to effectively improve the collection efficiency and the energy resolution. With this spectrometer we measured the threshold photoelectron spectra (TPES) and the mass-selected threshold photoelectron-photoion coincidence mass spectra (TPEPICO-MS) of NO molecules, as well as Xe/Ar/Ne rare gas mixtures. The ionization potential of NO was accurately determined, and the vibrationally resolved TPES spectra of the X1Σ+, c3Π and B1Π states of NO+ were obtained. Subsequently, the dissociation dynamics of the c3Π state of NO+ were studied by measuring the TPEPICO-MS and fitting the time-of-flight profile of the N+ fragment. The overall kinetic energy released from dissociation was determined to be 0.717 eV.

Keywords:

作者及机构信息

1.
合肥微尺度物质科学国家实验室(筹),中国科学技术大学化学物理系,合肥 230026

基金项目: 国家自然科学基金(批准号:21027005,10979042 )、国家重点基础研究发展计划(批准号:2007CB815204)和教育部创新计划同步辐射研究生创新基金(批准号:20080141S )资助的课题.

Authors and contacts

1.
Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China

参考文献

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[24]	Jarvis G K, Evans M, Ng C Y, Mitsuke K 1999 J. Chem. Phys. 111 3058
[25]	Wang S S, Kong R H, Tian Z Y, Shan X B, Zhang Y W, Sheng L S, Wang Z Y, Hao L Q, Zhou S K 2006 Acta Phys. Sin. 55 3433 (in Chinese) [王思胜、孔蕊弘、田振玉、单晓斌、张允武、盛六四、王振亚、郝立庆、周士康 2006 55 3433]
[26]	Franklin J L, Hierl P M, Whan D A 2004 J. Chem. Phys. 47 3148
[27]	Weitzel K M, Mahnert J 2002 Int. J. Mass Spectrom. 214 175
[28]	Xu H F, Li Q F, Zhou X G, Dai J H, Liu S L, Ma X X 2004 Acta Phys. Sin. 53 1759 (in Chinese) [徐海峰、李奇峰、周晓国、戴静华、刘世林、马兴孝 2004 53 1759]
[29]	Shi Y, Li Q F, Wang H, Dai J H, Liu S L, Ma X X 2005 Acta Phys. Sin. 54 2418 (in Chinese) [石勇、李奇峰、汪华、戴静华、刘世林、马兴孝 2005 54 2418]
[30]	Seccombe D P, Chim R Y L, Jarvis G K, Tuckett R P 2000 Phys. Chem. Chem. Phys. 2 769
[31]	Guthe F, Malow M, Weitzel K M, Baumgartel H 1998 Int. J. Mass Spectrom. Ion Proc. 172 47
[32]	Zhang L M, Wang F, Wang Z, Yu S Q, Liu S L, Ma X X 2004 J. Phys. Chem. A 108 1342

施引文献

[1]	Johnson P M, Otis C E 1981 Ann. Rev. Phys. Chem. 32 139
[2]	Ashfold M N R, Howe J D 1994 Ann. Rev. Phys. Chem. 45 57
[3]	Xu H F, Guo Y, Li Q F, Shi Y, Liu S L, Ma X X 2004 J. Chem. Phys. 121 3069
[4]	Wang H, Liu S L, Liu J, Wang F Y, Jang B, Yang X M 2008 Acta Phys. Sin. 57 796(in Chinese) [汪华、刘世林、刘杰、王凤燕、姜波、杨学明 2008 57 796]
[5]	Baer T 2000 Int. J. Mass Spectrom. 200 443
[6]	Ng C Y 2002 Ann. Rev. Phys. Chem. 53 101
[7]	Huang C Q, Yang B, Yang R, Wang J, Wei L X, Shan X B, Sheng L S, Zhang Y W, Qi F 2005 Rev. Sci. Instrum. 76 126108
[8]	Brehm B, Puttkamer E V 1967 Z. Naturforsch. 22 A 8
[9]	Eland J H D 1973 Int. J. Mass Spectrom. Ion Phys. 12 389
[10]	Werner A S, Baer T 1975 J. Chem. Phys. 62 2900
[11]	Stockbauer R 1973 J. Chem. Phys. 58 3800
[12]	Baer T 1979 Gas Phase Ion Chemistry (Vol. 1) (New York: Academic) p153
[13]	Eppink A T J B, Parker D H 1997 Rev. Sci. Instrum. 68 3477
[14]	Baer T, Li Y 2002 Int. J. Mass Spectrom. 219 381
[15]	Sztaray B, Baer T 2003 Rev. Sci. Instrum. 74 3763
[16]	Bodi A, Johnson M, Gerber T, Gengeliczki Z, Sztaray B, Baer T 2009 Rev. Sci. Instrum. 80 034101
[17]	Garcia G A, Soldi-Lose H, Nahon L 2009 Rev. Sci. Instrum. 80 023102
[18]	Tang X F, Zhou X G, Niu M L, Liu S L, Sun J D, Shan X B, Liu F Y, Sheng L S 2009 Rev. Sci. Instrum. 80 113101
[19]	Wang S S, Kong R H, Shan X B, Zhang Y W, Sheng L S, Wang Z Y, Hao L Q, Zhou S K 2006 J. Synchrotron. Radiat. 13 415
[20]	Edqvist O, Asbrink L, Lindholm E 1971 Z. Naturforsch. 26 A 1407
[21]	Eland J H D 1978 J. Chem. Phys. 70 2926
[22]	Lu Y, Stolte W C, Samson J A R 1997 J. Electr. Spectr. Relat. Phenom. 87 109
[23]	Eland J H D, Duerr E J 1997 Chem. Phys. 229 1
[24]	Jarvis G K, Evans M, Ng C Y, Mitsuke K 1999 J. Chem. Phys. 111 3058
[25]	Wang S S, Kong R H, Tian Z Y, Shan X B, Zhang Y W, Sheng L S, Wang Z Y, Hao L Q, Zhou S K 2006 Acta Phys. Sin. 55 3433 (in Chinese) [王思胜、孔蕊弘、田振玉、单晓斌、张允武、盛六四、王振亚、郝立庆、周士康 2006 55 3433]
[26]	Franklin J L, Hierl P M, Whan D A 2004 J. Chem. Phys. 47 3148
[27]	Weitzel K M, Mahnert J 2002 Int. J. Mass Spectrom. 214 175
[28]	Xu H F, Li Q F, Zhou X G, Dai J H, Liu S L, Ma X X 2004 Acta Phys. Sin. 53 1759 (in Chinese) [徐海峰、李奇峰、周晓国、戴静华、刘世林、马兴孝 2004 53 1759]
[29]	Shi Y, Li Q F, Wang H, Dai J H, Liu S L, Ma X X 2005 Acta Phys. Sin. 54 2418 (in Chinese) [石勇、李奇峰、汪华、戴静华、刘世林、马兴孝 2005 54 2418]
[30]	Seccombe D P, Chim R Y L, Jarvis G K, Tuckett R P 2000 Phys. Chem. Chem. Phys. 2 769
[31]	Guthe F, Malow M, Weitzel K M, Baumgartel H 1998 Int. J. Mass Spectrom. Ion Proc. 172 47
[32]	Zhang L M, Wang F, Wang Z, Yu S Q, Liu S L, Ma X X 2004 J. Phys. Chem. A 108 1342

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