| Calculation of the elastic scattering properties for cold and ultracold 39K atoms in a triplet state |
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| 作者姓名： | 胡秋波 王晓飞 孙金锋 朱遵略 |
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| 作者单位： | College of Physics and Information Engineering, Henan Normal University,
Xinxiang 453007, China;College of Physics and Information Engineering, Henan Normal University,
Xinxiang 453007, China;College of Physics and Information Engineering, Henan Normal University,
Xinxiang 453007, China；Department of Physics, Luoyang Normal College, Luoyang 471022, China ；;College of Physics and Information Engineering, Henan Normal University,
Xinxiang 453007, China；Institute of Atomic and Molecular Physics, Sichuan University,
Chengdu 610064, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of
China (Grant No 10574039) and the Science Foundation for Young Scientists of
Henan Normal University, China (Grant No 2005004). |
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| 摘 要： | The elastic scattering properties for collisions between cold and ultracold 39K atoms in a triplet state are investigated. Based on the recent theoretical and experimental results, the improved hybrid potential is presented for a triplet α3∑u^＋ ground state of K2. Our calculated value of the s-wave scattering length a by using the Numerov method for the triplet state is 79.578α0 and found to be in good agreement with the previous ones. The numbers of bound states are supported by the molecular potential. Pronounced shape resonances appear for the l = 3 partial waves for the α3∑u^＋ state. Furthermore, the s-wave scattering cross section, the total cross section and energy positions of shape resonances for the α3∑u^＋ state are calculated.
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| 关 键 词： | 散射长度 有效量程 弹性交叉断面 形态共振 |
| 收稿时间： | 2006-12-21 |
| 修稿时间： | 2006-12-21 |
Calculation of the elastic scattering properties for cold and ultracold 39K atoms in a triplet state |
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| Hu Qiu-Bo,Wang Xiao-Fei,Sun Jin-Feng and Zhu Zun-Lue.Calculation of the elastic scattering properties for cold and ultracold 39K atoms in a triplet state[J].Chinese Physics B,2007,16(8):2367-2370. |
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| Authors: | Hu Qiu-Bo Wang Xiao-Fei Sun Jin-Feng and Zhu Zun-Lue |
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| Institution: | 1.College of Physics and Information Engineering, Henan Normal University, Xinxiang 453007, China ;2. Department of Physics, Luoyang Normal College, Luoyang 471022, China ;3. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610064, China |
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| Abstract: | The elastic scattering properties for collisions between cold and
ultracold 39K atoms in a triplet state are investigated. Based on the
recent theoretical and experimental results, the improved hybrid potential
is presented for a triplet a3\Sigmau+ ground state of
K2. Our calculated value of the s-wave scattering length a by using
the Numerov method for the triplet state is 79.578a0
and found to be in good agreement with the previous ones. The numbers of
bound states are supported by the molecular potential. Pronounced shape
resonances appear for the l = 3 partial waves for the a3\Sigmau+ state. Furthermore, the s-wave scattering cross section, the total cross
section and energy positions of shape resonances for the
a3\Sigmau+ state are calculated. |
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| Keywords: | scattering length effective range elastic cross
section shape resonance |
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