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Theoretical simulation of the photoassociation process for NaCs |
| Zhang Chang-Zhe (张常哲), Zheng Bin (郑斌), Wang Jun (王军), Meng Qing-Tian (孟庆田) |
| College of Physics and Electronics, Shandong Normal University, Jinan 250014, China |
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Abstract We investigate the two-step association process of NaCs using the time-dependent wave packet method. Ground state atoms can be photoassociated to the low vibrational levels of the ground state for NaCs molecule by the two-step association. The time-dependent Schrödinger equation of the association process is solved within a three-state model and the wave packet is propagated with the "split operator-Fourier transform" scheme and the rotating-wave approximation (RWA). The vibrational population distribution of the ground state can be obtained by projecting the wave packet to every vibrational level of the ground state. The results not only show that for NaCs achievement of photoassociation production is accompanied by the photodissociation of the higher vibrational molecules, but also show that the vibrational distribution in lower vibrational levels of the ground state changes with the laser parameters.
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Received: 07 July 2012
Revised: 03 August 2012
Accepted manuscript online:
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PACS:
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34.50.Rk
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(Laser-modified scattering and reactions)
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31.15.-p
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(Calculations and mathematical techniques in atomic and molecular physics)
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82.20.Bc
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(State selected dynamics and product distribution)
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82.30.Nr
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(Association, addition, insertion, cluster formation)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11074151) and the National Basic Research Program of China (Grant No. 2011CB808100). |
Corresponding Authors:
Meng Qing-Tian
E-mail: qtmeng@sdnu.ed.cn
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Cite this article:
Zhang Chang-Zhe (张常哲), Zheng Bin (郑斌), Wang Jun (王军), Meng Qing-Tian (孟庆田) Theoretical simulation of the photoassociation process for NaCs 2013 Chin. Phys. B 22 023401
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