论文标题
高能量光子对He和两电子离子的小逆后载压量度电离
Small recoil momenta double ionization of He and two-electron ions by high energy photons
论文作者
论文摘要
我们通过单个光子的h $^ - $，HE和对带有Z = 3,4,5的两电子离子的单个光子计算各种差分和双重差分特性，该特征在所谓的无标准机制（QFM）统治区域中具有Z = 3,4,5。我们在电子电子结合线上采用了高度精确的波函数，这两个电离电子的坐标重合。我们追踪双差分分布的Z依赖性。对于所有考虑的目标，我们讨论光电子能分布对光子能的依赖性。我们的计算表明，随着两个传出电子的能量差异的增加，QFM贡献的迅速下降，并且两个传出动量之间的角度降低。作为一般特征，我们观察到QFM随核电荷增长的贡献减少。
We calculate various differential and double differential characteristics of ionization by a single photon for H$^-$, He and for the two-electron ions with Z=3,4,5 in the region of the so-called quasi-free mechanism (QFM) domination. We employ highly accurate wave functions at the electron-electron coalescence line where coordinates of both ionized electrons coincide. We trace the Z dependence for the double differential distribution. For all considered targets we discuss the dependence of the photoelectron energy distribution on the photon energy. Our calculation demonstrated the rapid decrease of QFM contribution with increase of the difference in energy of two outgoing electrons, and with decrease of the angle between two outgoing momenta. As a general feature, we observe the decrease of QFM contribution with nuclear charge growth.
