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A momentum filter for atomic gas

Video abstract for the article 'A momentum filter for atomic gas' by Wei Xiong, Xiaoji Zhou, Xuguang Yue, Yueyang Zhai and Xuzong Chen (Wei Xiong et al 2013 New J. Phys. 15 063025). Read the full article in New Journal http://iopscience.iop.org/1367-2630/15/6/063025.