Details
| Original language | English |
|---|---|
| Article number | 073203 |
| Journal | Physical Review Letters |
| Volume | 121 |
| Issue number | 7 |
| Publication status | Published - 17 Aug 2018 |
Abstract
The laser-induced fragmentation dynamics of this most fundamental polar molecule HeH+ are measured using an ion beam of helium hydride and an isotopologue at various wavelengths and intensities. In contrast to the prevailing interpretation of strong-field fragmentation, in which stretching of the molecule results primarily from laser-induced electronic excitation, experiment and theory for nonionizing dissociation, single ionization, and double ionization both show that the direct vibrational excitation plays the decisive role here. We are able to reconstruct fragmentation pathways and determine the times at which each ionization step occurs as well as the bond length evolution before the electron removal. The dynamics of this extremely asymmetric molecule contrast the well-known symmetric systems leading to a more general picture of strong-field molecular dynamics and facilitating interpolation to systems between the two extreme cases.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical Review Letters, Vol. 121, No. 7, 073203, 17.08.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Heteronuclear Limit of Strong-Field Ionization: Fragmentation of HeH+ by Intense Ultrashort Laser Pulses
AU - Wustelt, Philipp
AU - Oppermann, Florian
AU - Yue, Lun
AU - Möller, Max
AU - Stöhlker, Thomas
AU - Lein, Manfred
AU - Gräfe, Stefanie
AU - Paulus, Gerhard G.
AU - Sayler, A. Max
N1 - Funding information: The authors acknowledge funding by the Deutsche Forschungsgemeinschaft (DFG) in the frame of the Schwerpunktprogramm (SPP) 1840, Quantum Dynamics in Tailored Intense Fields.
PY - 2018/8/17
Y1 - 2018/8/17
N2 - The laser-induced fragmentation dynamics of this most fundamental polar molecule HeH+ are measured using an ion beam of helium hydride and an isotopologue at various wavelengths and intensities. In contrast to the prevailing interpretation of strong-field fragmentation, in which stretching of the molecule results primarily from laser-induced electronic excitation, experiment and theory for nonionizing dissociation, single ionization, and double ionization both show that the direct vibrational excitation plays the decisive role here. We are able to reconstruct fragmentation pathways and determine the times at which each ionization step occurs as well as the bond length evolution before the electron removal. The dynamics of this extremely asymmetric molecule contrast the well-known symmetric systems leading to a more general picture of strong-field molecular dynamics and facilitating interpolation to systems between the two extreme cases.
AB - The laser-induced fragmentation dynamics of this most fundamental polar molecule HeH+ are measured using an ion beam of helium hydride and an isotopologue at various wavelengths and intensities. In contrast to the prevailing interpretation of strong-field fragmentation, in which stretching of the molecule results primarily from laser-induced electronic excitation, experiment and theory for nonionizing dissociation, single ionization, and double ionization both show that the direct vibrational excitation plays the decisive role here. We are able to reconstruct fragmentation pathways and determine the times at which each ionization step occurs as well as the bond length evolution before the electron removal. The dynamics of this extremely asymmetric molecule contrast the well-known symmetric systems leading to a more general picture of strong-field molecular dynamics and facilitating interpolation to systems between the two extreme cases.
UR - http://www.scopus.com/inward/record.url?scp=85051803482&partnerID=8YFLogxK
U2 - 10.48550/arXiv.1801.04831
DO - 10.48550/arXiv.1801.04831
M3 - Article
C2 - 30169106
AN - SCOPUS:85051803482
VL - 121
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 7
M1 - 073203
ER -