Zobrazeno 1 - 10
of 1 393
pro vyhledávání: '"Lein M"'
Publikováno v:
Cells, Vol 13, Iss 12, p 1022 (2024)
Mesenchymal stem cells (MSCs) of placental origin hold great promise in tissue engineering and regenerative medicine for diseases affecting cartilage and bone. However, their utility has been limited by their tendency to undergo premature senescence
Externí odkaz:
https://doaj.org/article/14556b393fda47118364692670f21580
Autor:
Shvetsov-Shilovski, N. I., Lein, M.
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 fr
Externí odkaz:
http://arxiv.org/abs/2312.14636
Autor:
Shvetsov-Shilovski, N. I., Lein, M.
We investigate the application of deep learning to the retrieval of the internuclear distance in the two-dimensional H$_2^{+}$ molecule from the momentum distribution of photoelectrons produced by strong-field ionization. We study the effect of the c
Externí odkaz:
http://arxiv.org/abs/2211.01210
Autor:
Shvetsov-Shilovski, N. I., Lein, M.
We use a convolutional neural network to retrieve the internuclear distance in the two-dimensional H$_2^{+}$ molecule ionized by a strong few-cycle laser pulse based on the photoelectron momentum distribution. We show that a neural network trained on
Externí odkaz:
http://arxiv.org/abs/2108.08057
Autor:
Hartung, A., Brennecke, S., Lin, K., Trabert, D., Fehre, K., Rist, J., Schöffler, M. S., Jahnke, T., Schmidt, L. Ph. H., Kunitski, M., Lein, M., Dörner, R., Eckart, S.
Publikováno v:
Phys. Rev. Lett. 126, 053202 (2021)
Strong-field ionization of atoms by circularly polarized femtosecond laser pulses produces a donut-shaped electron momentum distribution. Within the dipole approximation this distribution is symmetric with respect to the polarization plane. The magne
Externí odkaz:
http://arxiv.org/abs/2008.07638
Autor:
Shvetsov-Shilovski, N. I., Lein, M.
Publikováno v:
Phys. Rev. A 100, 053411 (2019)
We present a mixed quantum-classical approach to strong-field ionization - a semiclassical two-step model with quantum input. In this model the initial conditions for classical trajectories that simulate electron wave packet after ionization are dete
Externí odkaz:
http://arxiv.org/abs/1907.01231
Autor:
Hartung, A., Eckart, S., Brennecke, S., Rist, J., Trabert, D., Fehre, K., Richter, M., Sann, H., Zeller, S., Henrichs, K., Kastirke, G., Hoehl, J., Kalinin, A., Schöffler, M. S., Jahnke, T., Schmidt, L. Ph. H., Lein, M., Kunitski, M., Dörner, R.
When a strong laser pulse induces the ionization of an atom, momentum conservation dictates that the absorbed photons transfer their momentum $p_{\gamma}=E_{\gamma}/c$ to the electron and its parent ion. Even after 30 years of studying strong-field i
Externí odkaz:
http://arxiv.org/abs/1902.07278
We extend the semiclassical two-step model for strong-field ionization that describes quantum interference and accounts for the Coulomb potential beyond the semiclassical perturbation theory to the hydrogen molecule. In the simplest case of the molec
Externí odkaz:
http://arxiv.org/abs/1809.11119
Publikováno v:
Phys. Rev. A 98, 023406 (2018)
We extend the semiclassical two-step model [Phys. Rev. A 94, 013415 (2016)] to include a multielectron polarization-induced dipole potential. Using this model we investigate the imprints of multielectron effects in the momentum distributions of photo
Externí odkaz:
http://arxiv.org/abs/1806.07313
Autor:
Eckart, S., Fehre, K., Eicke, N., Hartung, A., Rist, J., Trabert, D., Strenger, N., Pier, A., Schmidt, L. Ph. H., Jahnke, T., Schöffler, M. S., Lein, M., Kunitski, M., Dörner, R.
Publikováno v:
Phys. Rev. Lett. 121, 163202 (2018)
We report on the non-adiabatic offset of the initial electron momentum distribution in the plane of polarization upon single ionization of argon by strong field tunneling and show how to experimentally control the degree of non-adiabaticity. Two-colo
Externí odkaz:
http://arxiv.org/abs/1805.05898