论文标题
$^{39} ar $的光学增强的放电激发和捕获
Optically enhanced discharge excitation and trapping of $^{39}Ar$
论文作者
论文摘要
我们通过增强放电源中亚稳定原子的产生，在原子陷阱中报告了$^{39} ar $加载率的两倍增加。亚稳态中的额外原子$ 1S_5 $级别（Paschen表示法）是通过光学地泵送$ 1S_4 $ - $ 2P_6 $在801 nm和$ 1S_2 $ - $ 2P_6 $的过渡到923 nm的转型。通过为相应的六级系统求解主方程，我们将这两个过渡确定为最合适的系统，并在同时泵送两个过渡时遇到$ 1S_2 $和$ 1S_4 $之间的传输过程。我们在$^{39} ar $中计算两个过渡的先前未知的频移，并通过陷阱加载测量确认结果。表现出的加载率的增加使$^{39} ar $约会所需的样本量，不确定性和测量时间相应减少，这对于诸如海洋水和高山冰核的应用都有显着改善。
We report on a two-fold increase of the $^{39}Ar$ loading rate in an atom trap by enhancing the generation of metastable atoms in a discharge source. Additional atoms in the metastable $1s_5$ level (Paschen notation) are obtained via optically pumping both the $1s_4$ - $2p_6$ transition at 801 nm and the $1s_2$ - $2p_6$ transition at 923 nm. By solving the master equation for the corresponding six-level system, we identify these two transitions to be the most suitable ones and encounter a transfer process between $1s_2$ and $1s_4$ when pumping both transitions simultaneously. We calculate the previously unknown frequency shifts of the two transitions in $^{39}Ar$ and confirm the results with trap loading measurements. The demonstrated increase in the loading rate enables a corresponding decrease in the required sample size, uncertainty and measurement time for $^{39}Ar$ dating, a significant improvement for applications such as dating of ocean water and alpine ice cores.
