Direct measurement of the proton magnetic moment.
Direct measurement of the proton magnetic moment.
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直接测量质子磁矩。
DOI：
10.1103/physrevlett.108.153001
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发表时间：
2012
影响因子：
8.6
通讯作者：
G. Gabrielse
中科院分区：
文献类型：
--
作者：
J. DiSciacca;G. Gabrielse
核磁子中的质子磁矩被测量为μ(P)/μ(N)≡g/2=2.792 846±0.000 007，不确定度为百万分之2.5。用潘宁陷阱中的单个质子直接测定，展示了第一种方法，它对反质子(P)和对质子(P)同样有效。这为更精确地测量p磁矩(其不确定度20年来基本上没有减少)至少10(3)倍开辟了道路。
The proton magnetic moment in nuclear magnetons is measured to be μ(p)/μ(N) ≡ g/2 = 2.792 846 ± 0.000 007, a 2.5 parts per million uncertainty. The direct determination, using a single proton in a Penning trap, demonstrates the first method that should work as well with an antiproton (p) as with a proton (p). This opens the way to measuring the p magnetic moment (whose uncertainty has essentially not been reduced for 20 years) at least 10(3) times more precisely.