Strong-field double ionization dynamics of vibrating HeH${}^{+}$ versus HeT${}^{+}$

Abstract

We study double ionization (DI) dynamics of vibrating HeH${}^{+}$ versus its isotopic variant HeT${}^{+}$ in strong laser fields numerically. Our simulations show that for both cases, these two electrons in DI prefer to release together along the H(T) side. At the same time, however, the single ionization (SI) is preferred when the first electron escapes along the He side. This potential mechanism is attributed to the interplay of the rescattering of the first electron and the Coulomb induced large ionization time lag. On the other hand, the nuclear motion increases the contributions of these two electrons releasing together along the He side. This effect differentiates DI of HeH${}^{+}$ from HeT${}^{+}$.

arXiv comment8 pages,8figures

References in corpus (4)

• A two-dimensional, two-electron model atom in a laser pulse: exact treatment, single active electron-analysis, time-dependent density functional theory, classical calculations, and non-sequential ionization
• Ionization of oriented carbonyl-sulfide molecules by intense circularly polarized laser pulses
• Heteronuclear Limit of Strong-Field Ionization: Fragmentation of HeH${}^{+}$ by Intense Ultrashort Laser Pulses
• Strong-Field Polarizability-Enhanced Dissociative Ionization

Cited by in corpus (4)

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