| K-Li冷碰撞散射特性的理论研究 |
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| 引用本文： | 张计才,杨聚宝,孙金峰. K-Li冷碰撞散射特性的理论研究[J]. 原子与分子物理学报, 2013, 30(6): 597-601 |
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| 作者姓名： | 张计才 杨聚宝 孙金峰 |
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| 作者单位： | 河南师范大学物理与电子工程学院,河南师范大学物理与电子工程学院,洛阳师范学院物理与电子信息学院 |
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| 摘 要： | 本文应用量子方法和半经典方法计算了表征锂(6Li,7Li) 原子和钾(39K,40K,41K) 原子间超冷碰撞特性的散射参数，如s波散射长度，有效力程，p波散射长度等。超冷温度下6Li-39K单重态和三重态原子间的弹性散射截面主要为s波贡献，随着碰撞能量的增加散射截面有丰富的形状共振出现，计算发现单重态和三重态散射截面均存在显著的i波形状共振. 此外，本文应用简并内态近似获得了超精细态相互作用时的s波散射长度.
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| 关 键 词： | 冷原子碰撞 散射参数 简并內态近似 |
| 收稿时间： | 2012-09-02 |
| 修稿时间： | 2012-09-17 |
Theoretical reasearch of scattering properties for K-Li cold collisions |
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| Zhang Ji-Cai. Theoretical reasearch of scattering properties for K-Li cold collisions[J]. Journal of Atomic and Molecular Physics, 2013, 30(6): 597-601 |
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| Authors: | Zhang Ji-Cai |
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| Abstract: | This paper reports the calculations of the scattering parameters for collision between lithium (6Li,7Li) and potassium (39K,40K,41K) atoms at ultracold temperatures, such as s-wave scattering lengths, effective ranges and p-wave scattering lengths, by the quantum method and semiclassical method, respectively. The elastic scattering cross sections for 6Li-39K at ultracold temperatures are dominated by s-wave scattering, and shape resonances occur with the increasing collision energy. There exist pronounced i-wave shape resonances for both the singlet and triplet states cross sections. In addition, s-wave scattering lengths are calculated by using the Degenerate Internet State approximation for selected hyperfine states of K-Li. |
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| Keywords: | cold atom collisions scattering parameters degenerate internet state approximation |
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