论文标题
在OCS的DEA动力学中观察反振动的双模式和速度依赖性方向：揭示了点组对称性之间的部分相关性
Observation of rovibrationally coupled bi-modality and speed-dependent orientation in DEA dynamics of OCS: reveals partial correlations among point group symmetries
论文作者
论文摘要
已经使用基于飞行时间（TOF）的最先进速度图成像（VMI）技术对气相羰基硫化物（OCS）（OCS）进行解离电子附件（DEA）。在5.0、6.5和10.0 eV入射电子能量以及8.0 eV时弱结构时，观察到三个完善的DEA共振。使用楔形切片技术获得零散硫阴离子的速度切片图像（VSI），动能（KE）和角度分布（AD）。硫新生碎片的KE分布揭示了带有旋转式特征的双模式。这些广告证实了速度依赖性角各向异性要求三个不同点组对称性之间存在部分相关，并通过平面内弯曲模式与轴向后坐力分解证实。使用R-Matrix和密度功能方法的理论计算强烈支持实验观测。
Dissociative electron attachment (DEA) to gas-phase carbonyl sulfide (OCS) has been studied diligently using the time-of-flight (TOF) based state-of-the-art velocity map imaging (VMI) technique. Three well-resolved DEA resonances are observed at 5.0, 6.5 and 10.0 eV incident electron energies along with a weak structure at 8.0 eV. The velocity slice images (VSI), Kinetic energy (KE) and angular distributions (AD) for the fragmented sulfur anions are obtained using the wedge slicing technique. The KE distributions for the sulfur nascent fragments reveal bi-modality with rovibrational signatures. The ADs substantiate speed-dependent angular anisotropy demand the existence of partial correlations among three different point group symmetries, confirmed through an in-plane bending mode of vibration with the axial recoil breakdown. Theoretical calculations using R-matrix and density functional approaches strongly support the experimental observations.
