Szczepkowski J, Gartman R, Witkowski M, Tracewski L, Zawada M, Gawlik W
Institute of Physics, Pomeranian Academy, Arciszewskiego 22b, 76-200 Słupsk, Poland.
Rev Sci Instrum. 2009 May;80(5):053103. doi: 10.1063/1.3125051.
We describe the method allowing quantitative interpretation of absorptive images of mixtures of Bose-Einstein condensate and thermal atoms which reduces possible systematic errors associated with evaluation of the contribution of each fraction and eliminates arbitrariness of most of the previous approaches. By using known temperature dependence of the BEC fraction, the analysis allows precise calibration of the fitting results. The developed method is verified in two different measurements and compares well with theoretical calculations and with measurements performed by another group.
我们描述了一种方法，该方法允许对玻色-爱因斯坦凝聚体与热原子混合物的吸收图像进行定量解释，减少了与评估各组分贡献相关的可能系统误差，并消除了大多数先前方法的随意性。通过利用玻色-爱因斯坦凝聚体分数的已知温度依赖性，该分析允许对拟合结果进行精确校准。所开发的方法在两种不同的测量中得到验证，并且与理论计算以及另一组进行的测量结果吻合良好。
