首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Comparison of keV N-2(+center dot)/He and N-2(+center dot)/Ar collisions by emission spectroscopy and theory
【24h】

Comparison of keV N-2(+center dot)/He and N-2(+center dot)/Ar collisions by emission spectroscopy and theory

机译:用发射光谱和理论比较keV N-2(+中心点)/ He和N-2(+中心点)/ Ar碰撞

获取原文
获取原文并翻译 | 示例
           

摘要

Collision-induced emission spectra from 190-1020 nm were obtained for N-2(+center dot)/Ar collisions at laboratory frame collision energies from 2 to 8 keV. The relative emission intensities of N-2(+center dot), N+, and N-center dot are independent of the ion translational energy within the Studied energy range, supporting the curve-crossing mechanism for collisional excitation. The role of the target gas in keV N-2(+center dot)/He and N-2(+center dot)/Ar collisions was investigated by both emission spectroscopy and theoretical calculations. Adiabatic potential energy surfaces calculated at the CISD/6-311+G(2df) level of theory for N-2(+center dot)/He and N-2(+center dot)/Ar collisions indicate that excitation to the A (2)Pi(u) and B (2)Sigma(+)(u) states involves curve-crossing first to the C-2 Sigma(+)(u) state, and the difference in N-2(+center dot) emission intensities from the two systems can be accounted for by the slope difference at the crossing points based on the Landau-Zener curve-crossing model.
机译:在2至8 keV的实验室框架碰撞能量下,对于N-2(+中心点)/ Ar碰撞获得了190-1020 nm的碰撞诱导发射光谱。 N-2(+中心点),N +和N-中心点的相对发射强度与研究的能量范围内的离子平移能量无关,从而支持碰撞激发的曲线交叉机制。通过发射光谱和理论计算研究了目标气体在keV N-2(+中心点)/ He和N-2(+中心点)/ Ar碰撞中的作用。对于N-2(+中心点)/ He和N-2(+中心点)/ Ar碰撞,以CISD / 6-311 + G(2df)理论水平计算的绝热势能面表明对A( 2)Pi(u)和B(2)Sigma(+)(u)状态涉及到C-2 Sigma(+)(u)状态的曲线交叉,以及N-2(+中心点)的差基于Landau-Zener曲线交叉模型,可以通过交叉点处的斜率差来解释这两个系统的发射强度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号