| Calculation of Elastic Scattering Properties in an Ultra-Cold ^85Rb-^85Rb Vapour |
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| 作者姓名： | M.Kemal Ö ztürk Süleyman Ö zcelk |
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| 摘 要： | We report the calculation of the same-species elastic scattering properties for the ultracold rubidium-rubidium (^85Rb-^85Rb) system and the results are compared with other theoretical and experimental results in detail. We present an improved potential for triplet ground states of the Rb2 molecule, and calculate the scattering lengths αt and the effective range re using WKB and Numerov methods for two rubidium-85 collisions in the triplet state. Also, we investigate the convergence of these scattering properties, i.e. the dependence on core radius and K^0 parameter using quantum defect theory and the analytic calculations of scattering length obtained by Szmytkowski. In addition, we present evaporative cooling and other results that include phase shift and cross section at zero energy limit.
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| 关 键 词： | 弹性散射 超低温 铷蒸汽 浓缩碰撞 |
Calculation of Elastic Scattering Properties in an Ultra-Cold 85Rb--85Rb Vapour |
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| Affiliation: | Department of Physics, University of Gazi, 06500 Teknikokullar, Ankara, Turkey |
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| Abstract: | We report the calculation of the same-species elastic scattering properties for the ultracold rubidium--rubidium (85Rb--85Rb) system and the results are compared with other theoretical and experimental results in detail. We present an improved potential for triplet ground states of the Rb2 molecule, and calculate the scattering lengths at and the effective range r3 using WKB and Numerov methods for two rubidium-85 collisions in the triplet state. Also, we investigate the convergence of these scattering properties, i.e. the dependence on core radius and K0 parameter using quantum defect theory and the analytic calculations of scattering length obtained by Szmytkowski. In addition, we present evaporative cooling and other results that include phase shift and cross section at zero energy limit. |
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| Keywords: | 32 80 Cy 34 20 Cf 34 50 Pj |
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