Momentum spectroscopy for multiple ionization of cold rubidium in the elliptically polarized laser field
| Autor: | Matthias Weidemüller, Tian-Min Yan, Zhenjie Shen, Renyuan Li, Difa Ye, Yixuan Ma, Yuhai Jiang, Xincheng Wang, Huanyu Ma, Yizhu Zhang, Junyang Yuan |
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| Rok vydání: | 2020 |
| Předmět: |
Atomic Physics (physics.atom-ph)
General Physics and Astronomy chemistry.chemical_element FOS: Physical sciences 02 engineering and technology Elliptical polarization 01 natural sciences Physics - Atomic Physics law.invention Ion Rubidium Momentum Recoil law Ionization 0103 physical sciences Physics::Atomic and Molecular Clusters Physics::Atomic Physics 010306 general physics Spectroscopy Physics Condensed Matter::Quantum Gases 021001 nanoscience & nanotechnology Laser chemistry Atomic physics 0210 nano-technology |
| DOI: | 10.48550/arxiv.2003.01407 |
| Popis: | Employing recently developed magneto-optical trap recoil ion momentum spectroscopy (MOTRIMS) combined with cold atoms, strong laser pulse, and ultrafast technologies, we study momentum distributions of the multiply ionized cold rubidium (Rb) induced by the elliptically polarized laser pulses (35 fs, 1.3 × 1015 W/cm2). The complete vector momenta of Rb n+ ions up to charge state n = 4 are recorded with extremely high resolution (0.12 a.u. for Rb+). Variations of characteristic multi-bands are displayed in momentum distributions because the ellipticity varies from the linear to circular polarization, are interpreted qualitatively with the classical over-barrier ionization model. Present momentum spectroscopy of cold heavy alkali atoms presents novel strong-field phenomena beyond the noble gases. |
| Databáze: | OpenAIRE |
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