Loss of cold atoms due to collisions with residual gases in free flight and in a magneto-optical trap<xref rid="cpb_27_7_073701_fn1" ref-type="fn">*</xref> <fn id="cpb_27_7_073701_fn1"> <label>*</label> <p>Project supported by the Ministry of Science and Technology of China (Grant No. 2013YQ09094304).</p> </fn>

Loss of cold atoms due to collisions with residual gases in free flight and in a magneto-optical trap* *

Project supported by the Ministry of Science and Technology of China (Grant No. 2013YQ09094304).

Xiang Jing-feng^{1, 2}, Cheng He-nan^{1, 2}, Peng Xiang-kai^{1, 2}, Wang Xin-wen^{1, 2}, Ren Wei¹, Ji Jing-wei¹, Liu Kang-kang¹, Zhao Jian-bo¹, Li Lin¹, Qu Qiu-zhi¹, Li Tang¹, Wang Bin¹, Ye Mei-feng¹, Zhao Xin¹, Yao Yuan-yuan¹, Lü De-Sheng^{1, †}, Liu Liang^{1, ‡}

(color online) MOT loss rate versus pressure of residual gases. Red data points show the loss rate obtained by fitting the experimental data for the ⁸⁷Rb MOT. The blue line shows the calculated loss rate (with loss rate due to hot Rb atom) with residual gases for the 1 K well depth. The black dot line shows the calculated loss rate (with loss rate due to hot Rb atom) with residual gases for the 0.5 K well depth. The black dash line shows the calculated loss rate (with loss rate due to hot Rb atom) with residual gases for the 2 K well depth.