Elastic scattering of two Na atoms.
Elastic scattering of two Na atoms.
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DOI：
10.1103/physreva.50.4827
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发表时间：
1994-12
期刊：
影响因子：
--
通讯作者：
Côté;Dalgarno
中科院分区：
文献类型：
--
作者：
Côté;Dalgarno
Interaction potentials for the [ital X] [sup 1][Sigma][sub g][sup +] and [ital a] [sup 3][Sigma][sub u][sup +] states of Na[sub 2] are constructed and used in calculations of the elastic scattering of two Na atoms at ultralow temperatures. The sensitivity to retardation effects (or Casimir corrections) is explored. The calculated elastic and spin-change cross sections are very large, of the order of 10[sup [minus]12]--10[sup [minus]13] cm[sup 2] at zero temperature. The predicted scattering lengths are both positive, 34.9 [ital a][sub 0] for the [ital X] [sup 1][Sigma][sub g][sup +] state and 77.3 [ital a][sub 0] for the [ital a] [sup 3][Sigma][sub u][sup +] state. Pronounced shape resonances appear for the [ital l]=3 and 7 partial waves for the singlet and [ital l]=6 for the triplet states.
