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Rovibrational quenching of BH in ultracold 3He collisions |
| Gong Ming-Yan(宫明艳), Hu Xiao-Long(胡小龙), Chen Xia(陈侠), Niu Mei(牛梅), and Feng Er-Yin(凤尔银)† |
| Department of Physics, Anhui Normal University, Wuhu 241000, China |
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Abstract The interaction potential of a He--BH complex is investigated by the coupled-cluster single-double plus perturbative triples (CCSD (T)) method and an augmented correlation consistent polarized valence (aug-cc-pV)5Z basis set extended with a set of (3s3p2d1f1g) midbond functions. Using the five two-dimensional model potentials, the first three-dimensional interaction potential energy surface is constructed by interpolating along ($r-r_{\rm e}$) by using a fourth-order polynomial. The cross sections for the rovibrational relaxation of BH in cold and ultracold collisions with 3He atom are calculated based on the three-dimensional potential. The results show that the $\Delta v = - 1$ transition is more efficient than the $\varDelta v = - 2$ transition, and that the process of relaxation takes place mainly between rotational energy levels with the same vibration state and the $\varDelta j = - 1$ transition is the most efficient. The zero temperature quenching rate coefficient is finite as predicted by Wigner's law. The resonance is found to take place around 0.1--1~cm^{ - 1} translational energy, which gives rise to a step in the rate coefficients for temperatures around 0.1--1~K. The final rotational distributions in the state $v = 0$ resulting from the quenching of state ($v = 1$, $j = 0$) at three energies corresponding to the three different regimes are also given.
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Received: 18 September 2009
Accepted manuscript online:
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PACS:
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33.20.Vq
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(Vibration-rotation analysis)
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34.50.Ez
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(Rotational and vibrational energy transfer)
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31.15.bw
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(Coupled-cluster theory)
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31.15.xp
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(Perturbation theory)
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34.20.-b
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(Interatomic and intermolecular potentials and forces, potential energy surfaces for collisions)
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| Fund: Project supported by the National
Natural Science Foundation of China (Grant No.~10874001), the Key
Grant Project of the Chinese Ministry of Education (Grant
No.~208057), and the Natural Science Foundation of Anhui Province,
China (Grant No.~070416236). |
Cite this article:
Gong Ming-Yan(宫明艳), Hu Xiao-Long(胡小龙), Chen Xia(陈侠), Niu Mei(牛梅), and Feng Er-Yin(凤尔银) Rovibrational quenching of BH in ultracold 3He collisions 2010 Chin. Phys. B 19 063401
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| [1] |
Weiner J, Bagnato V S, Zillo S and Julienne P S 1999 Rev. Mod. Phys. 71 1
|
| [2] |
Dalfove F, Giorgini S, Pitaevskii L P and Stringari S 1999 Rev. Mod. Phys. 71 463
|
| [3] |
Wieman C E, Pritchard D and Wineland D J 1999 Rev. Mod. Phys. 71 S253
|
| [4] |
Herschbach D R 1999 Rev. Mod. Phys. 71 S411
|
| [5] |
Bodo E and Gianturco F A 2006 Int. Rev. Phys. Chem. 25 313
|
| [6] |
Balakrishnan N, Kharchenko V, Forrey R C and Dalgarno A 1995 Chem. Phys. Lett. 280 5
|
| [7] |
Hwang E and Dagdigian P J 1994 J. Chem. Phys. 101 2903
|
| [8] |
Hwang E and Dagdigian P J 1995 J. Chem. Phys. 102 2426
|
| [9] |
Alexander M H, Gregurick S and Dagdigian P J 1994 J. Chem. Phys. 101 2887
|
| [10] |
Yang M, Alexander M H, Gregurick S and Dagdigian P J 1995 J. Chem. Phys. 102 2413
|
| [11] |
Nizamov B and Dagdigian P J 2000 J. Chem. Phys. 113 4124
|
| [12] |
Wang Z Q, Gong M Y, Feng E Y and Cui Z F 2007 Chem. Phys. Lett. 443 237
|
| [13] |
Wang R K, Shen G X and Yang X D 2009 Acta Phys. Sin. 58 5335 (in Chinese)
|
| [14] |
Feng E Y, Wang Z Q, Gong M Y and Cui Z F 2007 J. Chem. Phys. 127 174301
|
| [15] |
Wang Z Q, Gong M Y, Zhang Y, Feng E Y and Cui Z F 2008 J. Chem. Phys . 128 044309
|
| [16] |
Feng E Y Zhang Y, Wang Z Q, Niu M and Cui Z F 2009 J. Chem. Phys. 130 124311
|
| [17] |
Bukowski R, Sadlej J, Jeziorski B, Jankowski P, Szalewicz K, Kucharski S A, Williams H L and Rice B M 1999 J. Chem. Phys . 110 3785
|
| [18] |
McBane G C and Cybulski S M 1999 J. Chem. Phys. 110 11734
|
| [19] |
Feng E Y, Huang W Y, Cui Z F and Zhang W J 2004 Chem. Phys. 303 309
|
| [20] |
Yu C R, Feng E Y, Wang R K and Yang X D 2006 Chin. Phys. 15 2571
|
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