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

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

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.

Keywords: time-dependent wave packet method photo-dissociation dynamics photo-absorption spectrum kinetic-energy spectrum NaCs

Received: 15 January 2014
Revised: 20 April 2014
Accepted manuscript online:

PACS:	33.80.Gj	(Diffuse spectra; predissociation, photodissociation)
	33.20.-t	(Molecular spectra)
	82.53.Eb	(Pump probe studies of photodissociation)

Fund: 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).

Corresponding Authors: Meng Qing-Tian
E-mail: qtmeng@sdnu.ed.cn

About author: 33.80.Gj; 33.20.-t; 82.53.Eb

Cite this article:

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 2014 Chin. Phys. B 23 103301


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

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