Molecular frame photoelectron emission in the presence of autoionizing resonances.
Molecular frame photoelectron emission in the presence of autoionizing resonances.
复制标题
自电离共振存在下的分子框架光电子发射。
DOI：
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发表时间：
2006
影响因子：
8.6
通讯作者：
R. Lucchese
中科院分区：
文献类型：
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作者：
M. Lebech;J. Houver;D. Dowek;R. Lucchese
我们已经测量了价壳层光电子的角分布的圆偏振光从固定在空间的N2 O分子，附近和顶部的共振由于里德堡态嵌入在电离连续。电离成N2 O+（B2 Pi，（1 pi）-1）态的圆二色性的符号在最低的主导共振之上反转。测得的角分布预测的最先进的多通道配置相互作用计算。在共振峰处圆二色性的符号的变化是当能量扫描穿过共振时共振偶极矩阵元素的相位以2 π的因子快速变化的结果。
We have measured the angular distribution of valence-shell photoelectrons excited by circularly polarized light from fixed-in-space N2O molecules, near to and on top of resonances due to Rydberg states embedded in the ionization continuum. The sign of the circular dichroism for ionization into the N2O+ (B2Pi, (1pi)-1) state is reversed on top of the lowest dominant resonances. Measured angular distributions are well predicted by state-of-the-art multichannel configuration interaction calculations. The change in sign of the circular dichroism at the peak of the resonance is the result of a rapid change in the phases of resonant dipole matrix elements by a factor of 2pi as the energy is scanned across the resonance.