Details
| Original language | English |
|---|---|
| Article number | 174001 |
| Journal | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Volume | 53 |
| Issue number | 17 |
| Publication status | Published - 1 Jul 2020 |
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.
Keywords
- helium hydride molecular ion, time-dependent Schrödinger equation, two-color laser fields
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 53, No. 17, 174001, 01.07.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Dissociation and ionization of HeH+ in sub-cycle-controlled intense two-color fields
AU - Oppermann, Florian
AU - Wustelt, Philipp
AU - Florin, T.
AU - Mhatre, S.
AU - Paulus, Gerhard G.
AU - Lein, Manfred
AU - Gräfe, Stefanie
PY - 2020/7/1
Y1 - 2020/7/1
N2 - 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.
AB - 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.
KW - helium hydride molecular ion
KW - time-dependent Schrödinger equation
KW - two-color laser fields
UR - http://www.scopus.com/inward/record.url?scp=85088022894&partnerID=8YFLogxK
U2 - 10.1088/1361-6455/ab9a93
DO - 10.1088/1361-6455/ab9a93
M3 - Article
AN - SCOPUS:85088022894
VL - 53
JO - Journal of Physics B: Atomic, Molecular and Optical Physics
JF - Journal of Physics B: Atomic, Molecular and Optical Physics
SN - 0953-4075
IS - 17
M1 - 174001
ER -