Time-dependent approach to the double-channel dissociation of the NaCs molecule induced by pulsed lasers

doi:10.1088/1674-1056/23/10/103301

中国物理B ›› 2014, Vol. 23 ›› Issue (10): 103301-103301.doi: 10.1088/1674-1056/23/10/103301

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Time-dependent approach to the double-channel dissociation of the NaCs molecule induced by pulsed lasers

张彩霞, 牛余全, 孟庆田

College of Physics and Electronics, Shandong Normal University, Jinan 250014, China

收稿日期:2014-01-15 修回日期:2014-04-20 出版日期:2014-10-15 发布日期:2014-10-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11074151) and the Doctoral Program Foundation of Institutions of Higher Education of China (Grant No. 20123704110002).

Time-dependent approach to the double-channel dissociation of the NaCs molecule induced by pulsed lasers

Zhang Cai-Xia (张彩霞), Niu Yu-Quan (牛余全), Meng Qing-Tian (孟庆田)

College of Physics and Electronics, Shandong Normal University, Jinan 250014, China

Received:2014-01-15 Revised:2014-04-20 Online:2014-10-15 Published:2014-10-15
Contact: Meng Qing-Tian E-mail:qtmeng@sdnu.ed.cn
About author:33.80.Gj; 33.20.-t; 82.53.Eb
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11074151) and the Doctoral Program Foundation of Institutions of Higher Education of China (Grant No. 20123704110002).

摘要/Abstract

摘要： The dynamics of the double-channel dissociation of the NaCs molecule is investigated by using the time-dependent wave packet (TDWP) method with the “split operator-Fourier transform” scheme. At a given wavelength and intensity of laser pulse, the population of each state changing with time is obtained. The photo-absorption spectra and kinetic-energy distribution of the dissociation fragments, which exhibit vibration-level structure and dispersion of the wave packet, respectively, are also obtained. The results show that by increasing the laser intensity, one can find not only the band center shift of the photo-absorption spectrum, but also the change of the fragment energy. The appearance of the diffusive band in the photo-absorption spectrum and the multiple peaks in the kinetic-energy spectrum can be attributed to the effects of the predissociation limit and the external field.

关键词: time-dependent wave packet method, photo-dissociation dynamics, photo-absorption spectrum, kinetic-energy spectrum, NaCs

Abstract: The dynamics of the double-channel dissociation of the NaCs molecule is investigated by using the time-dependent wave packet (TDWP) method with the “split operator-Fourier transform” scheme. At a given wavelength and intensity of laser pulse, the population of each state changing with time is obtained. The photo-absorption spectra and kinetic-energy distribution of the dissociation fragments, which exhibit vibration-level structure and dispersion of the wave packet, respectively, are also obtained. The results show that by increasing the laser intensity, one can find not only the band center shift of the photo-absorption spectrum, but also the change of the fragment energy. The appearance of the diffusive band in the photo-absorption spectrum and the multiple peaks in the kinetic-energy spectrum can be attributed to the effects of the predissociation limit and the external field.

Key words: time-dependent wave packet method, photo-dissociation dynamics, photo-absorption spectrum, kinetic-energy spectrum, NaCs

中图分类号: (Diffuse spectra; predissociation, photodissociation)

33.80.Gj

33.20.-t (Molecular spectra) 82.53.Eb (Pump probe studies of photodissociation)

张彩霞, 牛余全, 孟庆田. Time-dependent approach to the double-channel dissociation of the NaCs molecule induced by pulsed lasers[J]. 中国物理B, 2014, 23(10): 103301-103301.

Zhang Cai-Xia (张彩霞), Niu Yu-Quan (牛余全), Meng Qing-Tian (孟庆田). Time-dependent approach to the double-channel dissociation of the NaCs molecule induced by pulsed lasers[J]. Chin. Phys. B, 2014, 23(10): 103301-103301.

参考文献 0


[1]	Butler L J and Neumark D M 1996 J. Phys. Chem. 100 12801 doi: 10.1021/jp953518b

[2]	Lee S H 2010 Phys. Chem. Chem. Phys. 12 2655 doi: 10.1039/b921219a

[3]	Shapiro M, Hepburn J W and Brumer P 1988 Chem. Phys. Lett. 149 451 doi: 10.1016/0009-2614(88)80362-2

[4]	Charron E, Giusti-Suzor A and Mies F H 1993 Phys. Rev. Lett. 71 692 doi: 10.1103/PhysRevLett.71.692

[5]	Sage J M, Sainis S, Bergeman T and DeMille D 2005 Phys. Rev. Lett. 94 203001 doi: 10.1103/PhysRevLett.94.203001

[6]	Zhang W, Xie T, Huang Y, Wang G R and Cong S L 2013 Chin. Phys. B 22 013301

[7]	Zhang C Z, Zheng B, Wang J and Meng Q T 2013 Chin. Phys. B 22 023401

[8]	Léonard C and Quéré F L 2012 J. Chem. Phys. 137 164318 doi: 10.1063/1.4762444

[9]	Shi D H, Niu X H, Sun J F and Zhu Z L 2013 J. Phys. Chem. A 117 2020 doi: 10.1021/jp312670v

[10]	Alekseyev A B, Liebermann H P, Buenker R J, Balakrishnan N, Sadeghpour H R, Cornett S T and Cavagnero M J 2000 J. Chem. Phys. 113 1514 doi: 10.1063/1.481938

[11]	Herzberg G 1983 Molecular Spectra and Molecular Structure (Beijing: Science Press) p. 307

[12]	Grochola A, Szczepkowski J, Jastrzebski W and Kowalczyk P 2011 J. Chem. Phys. 135 044318 doi: 10.1063/1.3618559

[13]	Kim J T, Lee Y, Kim B, Wang D J, Gould P L, Eyler E E and Stwalley W C 2012 J. Chem. Phys. 137 244301 doi: 10.1063/1.4771661

[14]	Yu J, Shu C C, Hu W H and Cong S L 2010 J. Theor. Comput. Chem. 09 785 doi: 10.1142/S0219633610006018

[15]	Jendoubi I, Berriche H, Ouada H Ben and Gadea F X 2012 J. Phys. Chem. A 116 2945 doi: 10.1021/jp209106w

[16]	Yu J, Wang S M, Yuan K J and Cong S L 2006 Chin. Phys. 15 1996 doi: 10.1088/1009-1963/15/9/016

[17]	Sharma A, Dixit M N and Bhale G L 1986 J. Phys. 27 695

[18]	Shen Y F and Li W X 2002 Chin. J. Quantum. Electron. 19 410

[19]	Aymar M and Dulieu O 2007 Mol. Phys. 105 1733 doi: 10.1080/00268970701494016

[20]	Lin F, Zhang W, Zhao Z Y and Cong S L 2012 Chin. Phys. B 21 073203

[21]	Zhao Z Y, Zhang W, Huang Y and Cong S L 2013 Laser Phys. 23 035502 doi: 10.1088/1054-660X/23/3/035502

[22]	Zhang H S, Ji Z H, Yuan J P, Zhao Y T, Ma J, Wang L R, Xiao L T and Jia S T 2011 Chin. Phys. B 20 123702

[23]	Meng Q T and Varandas A J C 2013 Chin. Phys. B 22 073303

[24]	Meng Q T, Yang G H, Sun H L, Han K L and Lou N Q 2003 Phys. Rev. A 67 063202 doi: 10.1103/PhysRevA.67.063202

[25]	Wang J, Liu F, Yue D G, Zhao J, Xu Y, Meng Q T and Liu W K 2010 Chin. Phys. B 19 123301

[26]	Lu R F, Zhang P Y and Han K L 2008 Phys. Rev. E 77 066701 doi: 10.1103/PhysRevE.77.066701

[27]	Yue D G, Zheng X Y, Liu H and Meng Q T 2009 Chin. Phys. B 18 1479

[28]	Paul A K, Adhikari S, Baer M and Baer R 2010 Phys. Rev. A 81 013412 doi: 10.1103/PhysRevA.81.013412

[29]	Su Q Z, Yu J, Yuan K J and Cong S L 2012 J. Theor. Comput. Chem. 11 709 doi: 10.1142/S0219633612500472

[30]	He H X, Lu R F, Zhang P Y, Han K L and He G Z 2012 J. Chem. Phys. 136 024311 doi: 10.1063/1.3676065

[31]	Feit M D, Fleck J A and Steiger A 1982 J. Comput. Phys. 47 412 doi: 10.1016/0021-9991(82)90091-2

[32]	Neuhasuer D and Baer M 1989 J. Chem. Phys. 90 4351 doi: 10.1063/1.456646

[33]	Feuerstein B and Thumm U 2003 Phys. Rev. A 67 043405 doi: 10.1103/PhysRevA.67.043405

[34]	Fererstein B and Thumm U 2003 J. Phys. B: At. Mol. Opt. Phys. 36 707 doi: 10.1088/0953-4075/36/4/305

[35]	Meng Q T, Yang G H and Han K L 2003 Int. J. Quantum. Chem. 95 30 doi: 10.1002/qua.10712

[36]	Han Y C 2009 "Theoretical Study of Ionization and Dissociation Dynamics of Diatomic Molecules in Femtosecond Laser Fields" (Ph. D. Dissertation) (Dalian: Dalian University of Technology) (in Chinese)

[37]	Bhattacharjee A and Dastidar K R 2002 Phys. Rev. A 65 022701 doi: 10.1103/PhysRevA.65.022701

Time-dependent approach to the double-channel dissociation of the NaCs molecule induced by pulsed lasers

Time-dependent approach to the double-channel dissociation of the NaCs molecule induced by pulsed lasers

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