离子速度成像在阈值光电子-光离子符合测量中的应用和改进

doi:10.3866/PKU.WHXB20110633

物理化学学报 >> 2011, Vol. 27 >> Issue (07): 1574-1578.doi: 10.3866/PKU.WHXB20110633

离子速度成像在阈值光电子-光离子符合测量中的应用和改进

甄承, 唐小锋, 周晓国, 刘世林

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

收稿日期:2011-03-30 修回日期:2011-04-18 发布日期:2011-06-28
通讯作者: 周晓国 E-mail:xzhou@ustc.edu.cn
基金资助:
国家自然科学基金(10979042, 21073173)和国家重点基础研究发展规划项目(973) (2007CB815204)资助

Application and Improvement in the Ion Velocity Imaging of Threshold Photoelectron-Photoion Coincidence Measurements

ZHEN Cheng, TANG Xiao-Feng, ZHOU Xiao-Guo, LIU Shi-Lin

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

Received:2011-03-30 Revised:2011-04-18 Published:2011-06-28
Contact: ZHOU Xiao-Guo E-mail:xzhou@ustc.edu.cn
Supported by:
The project was supported by the National Natural Science Foundation of China (10979042, 21073173) and National Key Basic Research Program of China (973) (2007CB815204).

摘要/Abstract

摘要：

在阈值光电子-光离子符合质谱中, 通过增加离子检测端的电极板, 并调整相对电压形成渐增的加速电场, 获得了很好的离子速度聚焦效果. 通过这种电场, 使得具有较大平动能的离子团沿飞行方向逐渐膨胀的同时, 在垂直于飞行方向受到电场的束缚, 最终在探测器的表面实现速度聚焦, 形成缩小的图像(即速度成像的放大倍率N<1), 从而确保谱仪能够同时获得较高的平动能分辨率和质量分辨率. 应用这种缩小的速度聚焦电场, 我们研究了振动态选择的O₂ (B²Σ_g^-)离子解离动力学, 获得了碎片离子O在阈值光电子-光离子符合条件下的三维时间切片图像, 并通过比较两个解离通道所产生的O不同的平动能分布, 证实了这种离子透镜电场在较宽的离子平动能范围内能够始终保持良好的速度聚焦效果.

关键词: 离子速度成像, 阈值光电子-光离子符合, 飞行时间质谱, 解离动力学

Abstract:

A series of electrodes were used to form a new accelerated electric field for ion focusing optics of a threshold photoelectron-photoion coincidence (TPEPICO) mass spectrometer. Ion groups with higher kinetic energy gradually expanded along the direction of flight while they were restricted along the direction perpendicular to the flight tube. Consequently, contractible velocity imaging was achieved on the surface of the detector for all the ions where a magnification factor (N) of less than 1 was obtained for the images. Therefore, good kinetic energy resolution and mass resolving power were obtained simultaneously. Using this novel focusing lens the dissociation of vibrational state-selected O₂ ions in the B²Σ_g^- state was reinvestigated and three-dimentional time-sliced velocity images of the O fragment were recorded. By comparing the kinetic energy released distributions of the O that dissociated from the two dissociation channels, satisfied velocity imaging was obtained for the ions with a wide kinetic energy range.

Key words: Ion velocity imaging, Threshold photoelectron-photoion coincidence, Time-of-flight mass spectrometer, Dissociation dynamics

甄承, 唐小锋, 周晓国, 刘世林. 离子速度成像在阈值光电子-光离子符合测量中的应用和改进[J]. 物理化学学报, 2011, 27(07): 1574-1578.

ZHEN Cheng, TANG Xiao-Feng, ZHOU Xiao-Guo, LIU Shi-Lin. Application and Improvement in the Ion Velocity Imaging of Threshold Photoelectron-Photoion Coincidence Measurements[J]. Acta Phys. -Chim. Sin., 2011, 27(07): 1574-1578.

链接本文: https://www.whxb.pku.edu.cn/CN/10.3866/PKU.WHXB20110633

https://www.whxb.pku.edu.cn/CN/Y2011/V27/I07/1574

参考文献

(1) Chandler, D.W.; Houston, P. L. J. Chem. Phys. 1987, 87, 1445.
(2) Heck, A. J. R.; Chandler, D.W. Annu. Rev. Phys. Chem. 1995, 46, 335.
(3) Eppink, A.; Parker, D. H. Rev. Sci. Instrum. 1997, 68, 3477.
(4) Gebhardt, C. R.; Rakitzis, T. P.; Samartzis, P. C.; Ladopoulos, V.; Kitsopoulos, T. N. Rev. Sci. Instrum. 2001, 72, 3848.
(5) Townsend, D.; Minitti, M. P.; Suits, A. G. Rev. Sci. Instrum. 2003, 74, 2530.
(6) Ashfold, M. N. R.; Nahler, N. H.; Orr-Ewing, A. J.; Vieuxmaire, O. P. J.; Toomes, R. L.; Kitsopoulos, T. N.; Garcia, I. A.; Chestakov, D. A.;Wu, S. M.; Parker, D. H. Phys. Chem. Chem. Phys. 2006, 8, 26.
(7) Chichinin, A. I.; Gericke, K. H.; Kauczok, S.; Maul, C. Int. Rev. Phys. Chem. 2009, 28, 607.
(8) Liu, Y. Z.; Zheng, Q. S.; Zhang, Y.; Zhang, R. R.;Wang, Y. M.; Zhang, B. ChemPhysChem 2009, 10, 830.
(9) Xu, H. F.; Guo, Y.; Liu, S. L.; Ma, X. X.; Dai, D. X.; Sha, G. H. J. Chem. Phys. 2002, 117, 5722.
(10) Zhang, Y.W.; Yang, C. H.;Wu, S. M.; van Roij, A.; van der Zande,W. J.; Parker, D. H.; Yang, X. M. Rev. Sci. Instrum. 2011, 82, 13301
(11) Garcia, G. A.; Nahon, L.; Harding, C. J.; Mikajlo, E. A.; Powis, I. Rev. Sci. Instrum. 2005, 76, 53302.
(12) Lin, J. J.; Zhou, J. G.; Shiu,W. C.; Liu, K. P. Rev. Sci. Instrum. 2003, 74, 2495.
(13) Garcia, G. A.; Soldi-Lose, H.; Nahon, L. Rev. Sci. Instrum. 2009, 80, 23102.
(14) Tang, X. F.; Zhou, X. G.; Niu, M. L.; Liu, S. L.; Sun, J. D.; Shan, X. B.; Liu, F. Y.; Sheng, L. S. Rev. Sci. Instrum. 2009, 80, 113101.
(15) Tang, X. F.; Niu, M. L.; Zhou, X. G.; Liu, S. L. Acta Phys. Sin. 2010, 59, 6940. [唐小锋, 牛铭理, 周晓国, 刘世林. 物理学报, 2010, 59, 6940.]
(16) Tang, X. F.; Niu, M. L.; Zhou, X. G.; Liu, S. L.; Liu, F. Y.; Shan, X. B.; Sheng, L. S. J. Chem. Phys. 2011, 134, 54312.
(17) Wang, S. S.; Kong, R. H.; Shan, X. B.; Zhang, Y.W.; Sheng, L. S.;Wang, Z. Y.; Hao, L. Q.; Zhou, S. K. J. Synchrotron Radiat. 2006, 13, 415.
(18) Richardviard, M.; Dutuit, O.; Lavollee, M.; Govers, T.; Guyon, P. M.; Durup, J. J. Chem. Phys. 1985, 82, 4054.
(19) Tang, X. F.; Zhou, X. G.; Niu, M. L.; Liu, S. L.; Liu, F. Y.; Shan, X. B.; Sheng, L. S. J. Phys. Chem. A dx.doi.org/10.1021/ jp111590s.
(20) Wang, H.; Zhou, X. G.; Liu, S. L.; Jiang, B.; Dai, D. X.; Yang, X. M. J. Chem. Phys. 2010, 132, 244309.
(21) Xu, H. F.; Guo, Y.; Li, Q. F.; Shi, Y.; Liu, S. L.; Ma, X. X. J. Chem. Phys. 2004, 121, 3069.
(22) Wang, F. Y.; Chen, Z. C.; Zhang, Y.W.; Shuai, Q.; Jiang, B.; Dai, D. X.;Wang, X. Y.; Yang, X. M. Chin. J. Chem. Phys. 2009, 22, 191.

[1]	刘宁亮,沈环. 飞秒脉冲作用下氯丙烯的多光子解离和电离动力学[J]. 物理化学学报, 2017, 33(3): 500 -505 .
[2]	吴向坤,高治,于同坡,周晓国,刘世林. 氧硫化碳在230nm光激发下的S(³P)解离通道[J]. 物理化学学报, 2017, 33(10): 2004 -2012 .
[3]	孙中发, 高治, 吴向坤, 唐国强, 周晓国, 刘世林. N₂O⁺离子B²П态的光谱与光解离动力学[J]. 物理化学学报, 2015, 31(5): 829 -835 .
[4]	张蓉蓉, 秦朝朝, 龙金友, 杨明晖, 张冰. 丙烯酸分子的激发态超快预解离动力学[J]. 物理化学学报, 2012, 28(03): 522 -527 .
[5]	吴曼曼, 唐小锋, 牛铭理, 周晓国, 戴静华, 刘世林. 氯甲烷分子在13至17 eV激发能量范围内的电离解离[J]. 物理化学学报, 2011, 27(12): 2749 -2754 .
[6]	牛铭理, 宋磊, 唐小锋, 周晓国, 刘世林, 刘付轶, 单晓斌, 盛六四. 振动态选择的NO₂⁺离子e³B₂态解离生成氧离子通道的动力学[J]. 物理化学学报, 2011, 27(08): 1797 -1802 .
[7]	马嘉璧, 吴晓楠, 赵艳霞, 何圣贵, 丁迅雷. 钒氧阴离子团簇与小分子碳氢化合物反应的实验和理论研究[J]. 物理化学学报, 2010, 26(07): 1761 -1767 .
[8]	张盛, 夏元钦, 陈德应. N²⁺₂离子在线偏振和圆偏振强激光场中的解离[J]. 物理化学学报, 2009, 25(08): 1683 -1688 .
[9]	张延王骏郑秋莎刘玉柱张蓉蓉胡长进唐碧峰张冰. 离子速度成像方法研究碘代正戊烷的紫外光解动力学[J]. 物理化学学报, 2009, 25(04): 661 -667 .
[10]	张连水;王百荣;党伟;肖广长生. 脉冲流光放电激发解离H₂O分子的动力学过程[J]. 物理化学学报, 2008, 24(08): 1524 -1528 .
[11]	陈荫;张昌华;曹振洲;张冰. 离子速度成像方法研究溴代环己烷的紫外光解动力学[J]. 物理化学学报, 2008, 24(05): 844 -848 .
[12]	渠洪波;梁峰;魏政荣;李海洋;张冰. 离子速度影像法研究n-C₇H₁₅Br分子光解反应动力学[J]. 物理化学学报, 2006, 22(09): 1106 -1110 .
[13]	胡义华;林家勇;武华;陈仁;王小涓;杨世和. 复合物Mg⁺-S₂(CH₃)₂的光诱导反应[J]. 物理化学学报, 2006, 22(06): 744 -746 .
[14]	郑秋莎;唐颖;朱荣淑;魏政荣;张冰. 离子速度成像方法研究C₈H₁₇Br分子的光解动力学[J]. 物理化学学报, 2006, 22(04): 460 -464 .
[15]	胡义华;张兴初;武华;王小涓;陈丽;刘海川;杨世和. 复合物Mg⁺-NCSCH₃光诱导反应[J]. 物理化学学报, 2005, 21(04): 435 -438 .

离子速度成像在阈值光电子-光离子符合测量中的应用和改进

Application and Improvement in the Ion Velocity Imaging of Threshold Photoelectron-Photoion Coincidence Measurements

PDF

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

推荐阅读 0