Dissociation and ionization of HeH+ in sub-cycle-controlled intense two-color fields

Oppermann F, Wustelt P, Florin T, Mhatre S, Gräfe S, Paulus GG, Lein M (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Journal of Physics B-Atomic Molecular and Optical Physics Institute of Physics: Hybrid Open Access

Book Volume: 53

Article Number: 174001

Journal Issue: 17

DOI: 10.1088/1361-6455/ab9a93

Abstract

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.

Involved external institutions

Friedrich-Schiller-Universität Jena DE Germany (DE) Gottfried Wilhelm Leibniz Universität Hannover DE Germany (DE)

How to cite

APA:

Oppermann, F., Wustelt, P., Florin, T., Mhatre, S., Gräfe, S., Paulus, G.G., & Lein, M. (2020). Dissociation and ionization of HeH+ in sub-cycle-controlled intense two-color fields. Journal of Physics B-Atomic Molecular and Optical Physics, 53(17). https://doi.org/10.1088/1361-6455/ab9a93

MLA:

Oppermann, Florian, et al. "Dissociation and ionization of HeH+ in sub-cycle-controlled intense two-color fields." Journal of Physics B-Atomic Molecular and Optical Physics 53.17 (2020).

BibTeX: Download