Circular Dichroism in Multiphoton Ionization of Resonantly Excited $He^{+}$ Ions
| Autor: | Cesare Grazioli, Tommaso Mazza, Kevin C. Prince, Paola Finetti, Carlo Callegari, M. Coreno, Michael Meyer, Markus Ilchen, A. J. Rafipoor, Nikolay M. Kabachnik, Kiyoshi Ueda, Nicolas Douguet, Klaus Bartschat, Oksana Plekan, M. Devetta, Lorenzo Avaldi, Paola Bolognesi, Andrey K. Kazansky, Alexander Demidovich, S. Düsterer, Alexei N. Grum-Grzhimailo, A. V. Bozhevolnov, Y. Ovcharenko, M. Di Fraia |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Physics
Circular dichroism Photon Circular Dichroism General Physics and Astronomy Resonance Electron Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Electron spectroscopy Ion 010309 optics Excited state Ionization 0103 physical sciences ddc:550 multiphoton ionization Physics::Atomic Physics Atomic physics 010306 general physics |
| Zdroj: | Physical review letters 118 (2017). doi:10.1103/PhysRevLett.118.013002 info:cnr-pdr/source/autori:Ilchen, M.; Douguet, N.; Mazza, T.; Rafipoor, A. J.; Callegari, C.; Finetti, P.; Plekan, O.; Prince, K. C.; Demidovich, A.; Grazioli, C.; Avaldi, L.; Bolognesi, P.; Coreno, M.; Di Fraia, M.; Devetta, M.; Ovcharenko, Y.; Düsterer, S.; Ueda, K.; Bartschat, K.; Grum-Grzhimailo, A. N.; Bozhevolnov, A. V.; Kazansky, A. K.; Kabachnik, N. M.; Meyer, M./titolo:Circular Dichroism in Multiphoton Ionization of Resonantly Excited He+ Ions/doi:10.1103%2FPhysRevLett.118.013002/rivista:Physical review letters (Print)/anno:2017/pagina_da:/pagina_a:/intervallo_pagine:/volume:118 Physical review letters 118(1), 013002 (2017). doi:10.1103/PhysRevLett.118.013002 |
| DOI: | 10.3204/pubdb-2018-00484 |
| Popis: | Physical review letters 118(1), 013002 (2017). doi:10.1103/PhysRevLett.118.013002 Intense, circularly polarized extreme-ultraviolet and near-infrared (NIR) laser pulses are combined to double ionize atomic helium via the oriented intermediate He+(3p) resonance state. Applying angle-resolved electron spectroscopy, we find a large photon helicity dependence of the spectrum and the angular distribution of the electrons ejected from the resonance by NIR multiphoton absorption. The measured circular dichroism is unexpectedly found to vary strongly as a function of the NIR intensity. The experimental data are well described by theoretical modeling and possible mechanisms are discussed. Published by APS, College Park, Md. |
| Databáze: | OpenAIRE |
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