Nondipole effects in the angular distribution of photoelectrons from the C K shell of the CO molecule
Nondipole effects in the angular distribution of photoelectrons from the C K shell of the CO molecule
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DOI：
10.1103/physreva.73.022716
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发表时间：
2006-02
影响因子：
2.9
通讯作者：
K. Hosaka;J. Adachi;A. Golovin;M. Takahashi;T. Teramoto;N. Watanabe;T. Jahnke;T. Weber;M. Schöffler;L. Schmidt;T. Osipov;O. Jagutzki;A. Landers;M. Prior;H. Schmidt-Böcking;R. Dörner;A. Yagishita;S. Semenov;N. Cherepkov
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文献类型：
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作者：
K. Hosaka;J. Adachi;A. Golovin;M. Takahashi;T. Teramoto;N. Watanabe;T. Jahnke;T. Weber;M. Schöffler;L. Schmidt;T. Osipov;O. Jagutzki;A. Landers;M. Prior;H. Schmidt-Böcking;R. Dörner;A. Yagishita;S. Semenov;N. Cherepkov
测量和计算的贡献的非偶极项的光电子从C-K壳层的随机取向CO分子的角分布的报告。在两组测量中，测量了线偏振辐射在包含光子偏振和光子动量矢量的平面内的角分布以及吸收圆偏振光后的全三维光电子动量分布。计算已在松弛的核心Hartree-Fock近似与分数电荷。理论和实验都表明，非偶极项是非常小的光子能量区域从电离阈值的K壳高达约70 eV以上。
Measurements and calculations of a contribution of the nondipole terms in the angular distribution of photoelectrons from the C K shell of randomly oriented CO molecules are reported. In two sets of measurements, the angular distribution in the plane containing the photon polarization and the photon momentum vectors of linearly polarized radiation and the full three-dimensional photoelectron momentum distribution after absorption of circularly polarized light have been measured. Calculations have been performed in the relaxed core Hartree-Fock approximation with a fractional charge. Both theory and experiment show that the nondipole terms are very small in the photon energy region from the ionization threshold of the K shell up to about 70 eV above it.