Enhanced ionization of vibrational hot carbon disulfide molecules in strong femtosecond laser fields

doi:10.1088/1674-1056/27/6/063301

Abstract

By using a heated molecular beam in combination with a time-of-flight mass spectrometer, we experimentally study the ionization of vibrational-hot carbon disulfide (CS₂) molecules irradiated by a linearly polarized 800-nm 50-fs strong laser field. The ion yields are measured in a laser intensity range of 7.0×10¹² W/cm²-1.5×10¹⁴ W/cm² at different molecular temperatures of up to 1400 K. Enhanced ionization yield is observed for vibrationally excited CS₂ molecules. The results show that the enhancement decreases as the laser intensity increases, and exhibits non-monotonical dependence on the molecular temperature. According to the calculated potential energy curves of the neutral and ionic electronic states of CS₂, as well as the theoretical models of molecular strong-field ionization available in the literature, we discuss the mechanism of the enhanced ionization of vibrational-hot molecules. It is indicated that the enhanced ionization could be attributed to both the reduced ionization potential with vibrational excitation and the Frank-Condon factors between the neutral and ionic electronic states. Our study paves the way to understanding the effect of nuclear motion on the strong-field ionization of molecules, which would give a further insight into theoretical and experimental investigations on the interaction of polyatomic molecules with strong laser fields.

Keywords: strong field ionization vibrational excited time-of-flight-mass spectrum

Received: 04 February 2018
Revised: 13 March 2018
Accepted manuscript online:

PACS:

33.80.Rv

(Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states))

Fund:

Project supported by the National Natural Science Foundation of China (Grant Nos.91750104,11704004,11704149,and 11474130) and the Natural Science Foundation of Jilin Province,China (Grant No.20180101289JC).

Corresponding Authors: Ri Ma, Hai-Feng Xu
E-mail: rma@jlu.edu.cn;xuhf@jlu.edu.cn

Cite this article:

Wan-Long Zuo(左万龙), Hang Lv(吕航), Hong-Jing Liang(梁红静), Shi-Min Shan(单石敏), Ri Ma(马日), Bing Yan(闫冰), Hai-Feng Xu(徐海峰) Enhanced ionization of vibrational hot carbon disulfide molecules in strong femtosecond laser fields 2018 Chin. Phys. B 27 063301

[1]	Kjeldsen T K, Bisgaard C Z, Madsen L B and Stapelfeldt H 2005 Phys. Rev. A 71 013418
[2]	Zhang J F, Lv H, Zuo W L, Xu H F, Jin M X and Ding D J 2015 Chin. Phys. B 24 113301
[3]	Litvinyuk I V, Lee K F, Dooley P W, Rayner D M, Villeneuve D M and Corkum P B 2003 Phys. Rev. Lett. 90 233003
[4]	Pavičić D, Lee K F, Rayner D M, Corkum P B and Villeneuve D M 2007 Phys. Rev. Lett. 98 243001
[5]	Akagi H, Otobe T, Staudte A, Shiner A, Turner F, Dörner R, Villeneuve D M and Corkum P B 2009 Science 325 1364
[6]	Oppermann M, Weber S J, Frasinski L J, Ivanov M Y and Marangos J P 2013 Phys. Rev. A 88 043432
[7]	Zuo T, Chelkowski S and Bandrauk A D 1993 Phys. Rev. A 48 3837
[8]	Zuo T and Bandrauk A D 1995 Phys. Rev. A 52 R2511
[9]	Chelkowski S and Bandrauk A D 1995 J. Phys. B:At. Mol. Opt. Phys. 28 L723
[10]	Bandrauk A D and Ruel J 1999 Phys. Rev. A 59 2153
[11]	Chen H, Tagliamonti V and Gibson G N 2012 Phys. Rev. Lett. 109 193002
[12]	Fang L and Gibson G N 2008 Phys. Rev. A 78 051402
[13]	Fang L and Gibson G N 2007 Phys. Rev. A 75 06341
[14]	Guo J, Ge X L, Zhong H Y, Zhao X, Zhang M X, Jiang Y F and Liu X S 2014 Phys. Rev. A 90 053410
[15]	Guan X, Bartschat K, Schneider B I and Koesterke L 2013 Phys. Rev. A 88 24413
[16]	Kästner A, Grossmann F, Krause S, Schmidt R, Kenfack A and Rost J M 2009 New J. Phys. 11 6456
[17]	Brichta J P, Liu W K, Zaidi A A, Trottier A and Sanderson J H 2006 J. Phys. B:At. Mol. Opt. Phys. 39 3769
[18]	Huang J C, Cheung Y S, Evans M, Liao C X, Ng C Y, Hsu C W, Heimann P, Lefebvre-Brion H and Cossart-Magos C 1997 J. Chem. Phys. 106 864
[19]	Zuo W L, Lv H, Zhao L, Zhang Q and Xu H F 2015 Int. J. Mass Spectrom. 392 80
[20]	Clauberg H, Minsek D W and Chen P 1992 J. Am. Chem. Soc. 114 99
[21]	Ammosov M V, Delone N B and Krainov V P 1986 Sov. Phys. JETP 64 1191
[22]	Keldysh L V 1965 J. Exp. Theor. Phys. 5 20
[23]	Werner H J, Knowles P J, Knizia G, Manby F R, Schütz M, Celani P, Korona T, Lindh R, Mitrushenkov A, Rauhut G, MOLPRO and version 2010.1, a package of ab initio program.
[24]	Werner H J, Knowles P J, Knizia G, Manby F R and Schütz M 2012 Wires. Comput. Mol. Sci. 2 242
[25]	Tong X M, Zhao Z X and Lin C D 2002 Phys. Rev. A 66 033402
[26]	Roy B, Juricic V and Herbut I F 2013 Phys. Rev. B 87 142
[27]	Kornev A S and Zon B A 2015 Phys. Rev. A 92 033420
[28]	Kornev A S and Zon B A 2014 Laser Phys. 24 115302
[29]	Kornev A S and Zon B A 2012 Phys. Rev. A 86 043401

[1]	Ultrafast dynamics of cationic electronic states of vinyl bromide by strong-field ionization-photofragmentation Long-Xing Zhou(周龙兴), Yang Liu(刘洋), Shen He(贺屾), Da-Shuai Gao(高大帅), Xing-Chen Shen(沈星晨), Qi Chen(陈淇), Tao Yu(于涛), Hang Lv(吕航), and Hai-Feng Xu(徐海峰). Chin. Phys. B, 2022, 31(2): 028202.
[2]	Trajectory analysis of few-cycle strong field ionization in two-color circularly polarized fields Yan Huang(黄燕), Chaochao Qin(秦朝朝), Yizhu Zhang(张逸竹), Xincheng Wang(王新成), Tian-Min Yan(阎天民), Yuhai Jiang(江玉海). Chin. Phys. B, 2019, 28(9): 093202.
[3]	Ionizations and fragmentations of benzene, methylbenzene, and chlorobenzene in strong IR and UV laser fields Zhang Jun-Feng (张军峰), Lü Hang (吕航), Zuo Wan-Long (左万龙), Xu Hai-Feng (徐海峰), Jin Ming-Xing (金明星), Ding Da-Jun (丁大军). Chin. Phys. B, 2015, 24(11): 113301.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Metrics
Related Articles

Enhanced ionization of vibrational hot carbon disulfide molecules in strong femtosecond laser fields

Cite this article:

Online attention