%0 Journal Article
%T A cold 87Rb atomic beam<br>
%A Wang Xiao-Ji
%A Feng Yan-Ying
%A Xue Hong-Bo
%A Zhou Zhao-Ying
%A Zhang Wen-Dong
%A <br>
%J 中国物理 B
%D 2011
%I 
%X We demonstrate an experimental setup for the production of a beam source of cold 87Rb atoms. The atoms are extracted from a trapped cold atomic cloud in an unbalanced three-dimensional magneto-optical trap. Via a radiation pressure difference generated by a specially designed leak tunnel along one trapping laser beam, the atoms are pushed out continuously with low velocities and a high flux. The most-probable velocity in the beam is varied from 9 m/s to 19 m/s by varying the detuning of the trapping laser beams in the magneto-optical trap and the flux can be tuned up to 4×109 s-1 by increasing the intensity of the trapping beams. We also present a simple model for describing the dependence of the beam performance on the magneto-optical trap trapping laser intensity and the detuning.
%K continuous atomic beam
%K unbalanced three-dimensional magneto-optical trap
%K radiation pressure difference
%K laser cooling and trapping<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=B8035D61C1BAF40FF3AD27F25EE75B07&yid=9377ED8094509821&vid=A04140E723CB732E&iid=59906B3B2830C2C5&sid=B4064768BE36204E&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=19