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Convolutional neural network for retrieval of the time-dependent bond length in a molecule from photoelectron momentum distributions
Published 22 Dec 2023 in physics.atom-ph | (2312.14636v1)
Abstract: We apply deep learning for retrieval of the time-dependent bond length in the dissociating two-dimensional H$_2{+}$ molecule using photoelectron momentum distributions. We consider a pump-probe scheme and calculate electron momentum distributions from strong-field ionization by treating the motion of the nuclei classically, semiclassically or quantum mechanically. A convolutional neural network trained on momentum distributions obtained at fixed internuclear distances retrieves the time-varying bond length with an absolute error of $0.2$-$0.3$ a.u.
- Keil Th and Bauer D 2017 Coulomb-corrected strong-field quantum trajectories beyond dipole approximation J. Phys. B: At. Mol. Opt. Phys. 50 194002
- Brennecke S and Lein M 2019 Strong-field photoelectron holography beyond the electric dipole approximation: A semiclassical analysis Phys. Rev. A 100 023413
- Schäfer L 1976 Electron diffraction as a tool of structural chemistry Appl. Spectrosc. 30 123
- Corkum P B 1993 Plasma perspective on strong field multiphoton ionization 71 1994
- Keldysh L V 1964 Ionization in the field of a strong electromagnetic wave Sov. Phys. JETP 20 1307
- Faisal F H M 1973 Multiple absorption of laser photons by atoms, J. Phys. B.: At. Mol. Opt. Phys. 6 L89
- Reiss H R 1980 Effect of an intense electromagnetic field on a weakly bounded system Phys. Rev. A 22 1786
- Bian X-B and Bandrauk A D 2012 Attosecond Time-Resolved Imaging of Molecular Structure by Photoelectron Holography Phys. Rev. Lett. 108 263003
- Bian X-B and Bandrauk A D 2014 Orientation-dependent forward-backward photoelectron holography from asymmetric molecules Phys. Rev. A 89 033423
- Yan T-M and Bauer D, 2012 Sub-barrier Coulomb effects on the interference pattern in tunneling-ionization photoelectron spectra Phys. Rev. A 86 053403
- Shvetsov-Shilovski N I and Lein M 2022 Deep learning for retrieval of the internuclear distance in a molecule from interference patterns in photoelectron momentum distributions Phys. Rev. A 105 L021102
- The MathWorks Inc. MATLAB Version 9.14 (R2023a) Natick, Massachusetts mathworks.com
- Bransden B H and Joachain C 1983 Physics of Atoms and Molecules (Harlow: Longman Group Limited)
- Husimi K 1940 Some formal properties of the density matrix Proc. Phys. Math. Soc. Jpn. 22 264
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