Perfect control of photoelectron anisotropy for randomly oriented ensembles of molecules by XUV REMPI and polarization shaping
| Autor: | Loren Greenman, Christiane P. Koch, R. Esteban Goetz |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Quantum Physics 010304 chemical physics Atomic Physics (physics.atom-ph) Polyatomic ion FOS: Physical sciences General Physics and Astronomy 010402 general chemistry Polarization (waves) 01 natural sciences Quantum chemistry Omega Physics - Atomic Physics 0104 chemical sciences Extreme ultraviolet 0103 physical sciences Physics::Atomic and Molecular Clusters Molecule Physics::Atomic Physics Scattering theory Physical and Theoretical Chemistry Atomic physics Quantum Physics (quant-ph) Anisotropy |
| Zdroj: | The Journal of Chemical Physics. 151:074106 |
| ISSN: | 1089-7690 0021-9606 |
| DOI: | 10.1063/1.5111362 |
| Popis: | We report two schemes to generate perfect anisotropy in the photoelectron angular distribution of a randomly oriented ensemble of polyatomic molecules. In order to exert full control over the anisotropy of photoelectron emission, we exploit interferences between single-photon pathways and a manifold of resonantly-enhanced two-photon pathways. These are shown to outperform non-sequential $(\omega,2\omega)$ bichromatic phase control for the example of CHFClBr molecules. We are able to optimize pulses that yield anisotropic photoelectron emission thanks to a very efficient calculation of photoelectron momentum distributions. This is accomplished by combining elements of quantum chemistry, variational scattering theory, and time-dependent perturbation theory. |
| Databáze: | OpenAIRE |
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