Absolute total cross sections and asymmetry parameters for the photodetachment of the ${}^4{S}^o$ ground state of ${\mathrm{C}}^{-}$ are reported for photon energies ranging from threshold to 6 eV. The total cross sections were measured using the animated crossed beam technique incorporating corrections for saturation, while the asymmetry parameters were obtained using velocity map imaging spectrometry. The measured values are in good agreement with theoretical results obtained from an $R$-matrix calculation using polarized pseudostates.

中文翻译：

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C-（4So）光解的绝对截面和不对称参数

光电分离的绝对总截面和不对称参数。 ${}^4{\mathrm{小号}}^{Ø}$ 的基态 ${\mathrm{C}}^{-}$报告了从阈值到6 eV的光子能量。使用结合了饱和度校正的动画交叉光束技术测量总横截面，而使用速度图成像光谱仪获得不对称参数。测量值与从$\mathrm{[R}$-使用极化伪态的矩阵计算。