Absolute and ratio measurements of the polarizability of Na, K, and Rb with an atom interferometer
Absolute and ratio measurements of the polarizability of Na, K, and Rb with an atom interferometer
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DOI：
10.1103/physreva.81.053607
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发表时间：
2010-01
影响因子：
2.9
通讯作者：
W. Holmgren;M. Revelle;V. Lonij;A. Cronin
中科院分区：
文献类型：
--
作者：
W. Holmgren;M. Revelle;V. Lonij;A. Cronin
利用具有电场梯度的Mach-Zehnder原子干涉仪测量了钠、钾和Rb的基态电偶极极化率。我们发现：{α}{subNa}=24.11(2){substat}(18){subsys}x10{sup-24}cm{sup 3}，{pha}{subK}=43.06(14)(33)，{pha}{subRb}=47.24(12)(42)。由于所有这些测量都是在相同的仪器中进行的，并且受到相同的系统误差的影响，所以我们可以用0.3%的不确定度来表示极化比。我们发现：{α}{subRb}/{α}{subNa}=1.959(5)，{α}{subK}/{α}{subNa}=1.786(6)，以及{α}{subRb}/{α}{subK}=1.097(5)。我们将我们的比率测量与Ekstrom等人对钠极化率的更高精度测量相结合。[物理。A 51,3883(1995)修订版]找到{Alpha}{subK}=43.06(21)和{Alpha}{subRb}=47.24(21)。
We measured the ground-state electric-dipole polarizability of sodium, potassium, and rubidium using a Mach-Zehnder atom interferometer with an electric-field gradient. We find {alpha}{sub Na}=24.11(2){sub stat}(18){sub sys}x10{sup -24}cm{sup 3}, {alpha}{sub K}=43.06(14)(33), and {alpha}{sub Rb}=47.24(12)(42). Since these measurements were all performed in the same apparatus and subject to the same systematic errors, we can present polarizability ratios with 0.3% uncertainty. We find {alpha}{sub Rb}/{alpha}{sub Na}=1.959(5), {alpha}{sub K}/{alpha}{sub Na}=1.786(6), and {alpha}{sub Rb}/{alpha}{sub K}=1.097(5). We combine our ratio measurements with the higher-precision measurement of sodium polarizability by Ekstrom et al. [Phys. Rev. A 51, 3883 (1995)] to find {alpha}{sub K}=43.06(21) and {alpha}{sub Rb}=47.24(21).