Using quantum-mechanical, one-dimensional, non-Born–Oppenheimer simulations we study the control over the strong-field dynamics of the helium hydride molecular ion HeH + due to interaction driven by short and strong two-color laser pulses. We calculate yields of two competing fragmentation channels: electron removal and dissociation. We find that by changing the relative phase of the two colors, we can select the dominating channel. Nuclear motion is decisive for explaining ionization in this target. Ionization yields are vastly underestimated when nuclear motion is excluded and they are substantially reduced in the heavier isotopologue HeD + . Coupling of the two lowest electronic states is crucial even for the ground-state dissociation process.

中文翻译：

---

亚周期控制的强双色场中HeH +的离解和电离

使用量子力学，一维，非Born–Oppenheimer模拟，我们研究了由于短而强的双色激光脉冲驱动的相互作用而对氢化氦分子离子HeH +的强场动力学的控制。我们计算两个竞争的碎片通道的产量：电子去除和解离。我们发现通过更改两种颜色的相对相位，我们可以选择主导通道。核运动对于解释该目标中的电离具有决定性作用。当排除核运动时，电离产率被大大低估，而在重同位素同位素HeD +中，电离产率则大大降低。即使对于基态解离过程，两个最低电子态的耦合也至关重要。