Trapped Antihydrogen in Its Ground State
Trapped Antihydrogen in Its Ground State
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DOI：
10.1103/physrevlett.108.113002
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发表时间：
2012-03-16
影响因子：
8.6
通讯作者：
Walz, J.
中科院分区：
文献类型：
--
作者：
Gabrielse, G.;Kalra, R.;Walz, J.
反氢原子((H)在BAR上)被禁闭在IOFE陷阱中15-1000个S-足够长的时间来确保它们达到基态。尽管在使大量冷反质子((P)在bar上)和正电子(e(+))相互作用方面仍然存在重复性挑战，但平均产生和观察到5+/-1个同时受限的基态原子，远远超过先前报道的数量。如果要证明同时捕获(H)棒上的捕获(H)的数量的增加，并且要在感兴趣的精度水平上进行光谱研究，那么增加棒上的捕获(H)的数量是至关重要的。
Antihydrogen atoms ((H) over bar) are confined in an Ioffe trap for 15-1000 s-long enough to ensure that they reach their ground state. Though reproducibility challenges remain in making large numbers of cold antiprotons ((p) over bar) and positrons (e(+)) interact, 5 +/- 1 simultaneously confined ground-state atoms are produced and observed on average, substantially more than previously reported. Increases in the number of simultaneously trapped (H) over bar are critical if laser cooling of trapped (H) over bar is to be demonstrated and spectroscopic studies at interesting levels of precision are to be carried out.