论文标题
液体氩气闪光灯的组速度的测量
A measurement of the group velocity of scintillation light in liquid argon
论文作者
论文摘要
液体氩气$ v_ {g} $在$λ\ sim \ sim 128 $ 〜nm波长中的闪光灯的传播速度首次在Cern的专用实验设置中进行测量。 VUV区域中液体氩气的折射率（N）和瑞利散射长度（$ \ MATHCAL {L} $）。对于$λ= 128 $ 〜nm，我们发现$ n = 1.358 \ pm 0.003 $和$ \ mathcal {l} = 99.1 \ pm 2.3 $ 〜cm。对于搜索罕见事件（例如中微子和暗物质相互作用）的各种实验，测量值是感兴趣的。得出的数量还代表了描述液体氩气闪光灯传播的理论模型的关键信息。
The propagation velocity of scintillation light in liquid argon $v_{g}$ at $λ\sim 128$~nm wavelength, has been measured for the first time in a dedicated experimental setup at CERN.\\ The obtained result $\frac{1}{v_{g}} = 7.46 \pm 0.08$~ns/m , is then used to derive the value of the refractive index (n) and the Rayleigh scattering length ($\mathcal{L}$) for liquid argon in the VUV region. For $λ= 128$~nm we found $n= 1.358 \pm 0.003$ and $\mathcal{L}= 99.1 \pm 2.3$~cm. The measured values are of interest for a variety of experiments searching for rare events like neutrino and dark matter interactions. The derived quantities also represent key information for theoretical models describing the propagation of scintillation light in liquid argon.
