Experimental demonstration of a controllable electrostatic molecular beam splitter.
Experimental demonstration of a controllable electrostatic molecular beam splitter.
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DOI：
10.1103/physrevlett.106.140401
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发表时间：
2011-04
影响因子：
8.6
通讯作者：
L. Deng;Yan Liang;Zhenxing Gu;Shunyong Hou;Sheng-Qiang Li;Yong Xia;J. Yin
中科院分区：
文献类型：
--
作者：
L. Deng;Yan Liang;Zhenxing Gu;Shunyong Hou;Sheng-Qiang Li;Yong Xia;J. Yin
我们实验证明了一个可控的静电分束器引导ND 3分子与一个单一的Y形带电线和均匀的偏置场所产生的充电金属平行板电容器。研究了ND 3光束的分束比R和相对导向效率η与分束器两输出臂电压差的关系。研究了分子速度v和切割位置L对分束比R的影响，模拟了冷分子的导向和分束动力学过程。研究表明，通过改变ΔU在-6 kV ~+6 kV范围内的变化，分束器的分束比R可以方便地在10%~ 90%之间调节，模拟结果与实验结果一致。
We experimentally demonstrate a controllable electrostatic beam splitter for guided ND3 molecules with a single Y-shaped charged wire and a homogeneous bias field generated by a charged metallic parallel-plate capacitor. We study the dependences of the splitting ratio R of the guided ND3 beam and its relative guiding efficiency η on the voltage difference between two output arms of the splitter. The influences of the molecular velocity v and the cutting position L on the splitting ratio R are investigated as well, and the guiding and splitting dynamic processes of cold molecules are simulated. Our study shows that the splitting ratio R of our splitter can be conveniently adjusted from 10% to 90% by changing ΔU from -6 kV to +6 kV, and the simulated results are consistent with our experimental ones.