Few-photon single ionization of cold rubidium in the over-the-barrier regime
Photoionization of rubidium atoms cooled in a magneto-optical trap, characterized by the coexistence of the ground 5S1/2 and excited 5P3/2 states, is investigated experimentally and theoretically with the 400-nm femtosecond laser pulses at intensities of I=(3×109)-(4.5×1012) W/cm2. The recoil-ion mo...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
March 2023
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| In: |
Physical review
Year: 2023, Volume: 107, Issue: 3, Pages: 1-9 |
| ISSN: | 2469-9934 |
| DOI: | 10.1103/PhysRevA.107.033114 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevA.107.033114 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.107.033114 
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| Author Notes: | Huanyu Ma, Xincheng Wang, Linxuan Zhang, Zhihan Zou, Junyang Yuan, Yixuan Ma, Rujin Lv, Zhenjie Shen, Tianmin Yan, Matthias Weidemüller, Difa Ye, and Yuhai Jiang |
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| 245 | 1 | 0 | |a Few-photon single ionization of cold rubidium in the over-the-barrier regime |c Huanyu Ma, Xincheng Wang, Linxuan Zhang, Zhihan Zou, Junyang Yuan, Yixuan Ma, Rujin Lv, Zhenjie Shen, Tianmin Yan, Matthias Weidemüller, Difa Ye, and Yuhai Jiang |
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| 500 | |a Gesehen am 13.06.2023 | ||
| 520 | |a Photoionization of rubidium atoms cooled in a magneto-optical trap, characterized by the coexistence of the ground 5S1/2 and excited 5P3/2 states, is investigated experimentally and theoretically with the 400-nm femtosecond laser pulses at intensities of I=(3×109)-(4.5×1012) W/cm2. The recoil-ion momentum distribution (RIMD) of Rb+ exhibits rich ringlike structures and their energies correspond to one-photon ionization of the 5P3/2 state and two-photon and three-photon ionizations of the 5S1/2 state, respectively. With increasing I, the dips near zero momentum (NZM) in the experimental RIMDs become shallow dramatically and their peaked Rb+ momenta ionized from the 5P3/2 state move obviously toward zero while the peaks from the 5S1/2 state do not shift. In addition, the ion-yield ratio of the 5S1/2 state to the 5P3/2 state varies from I to I1.5 as I increases. These features indicate a transition from perturbative ionization to strongly perturbative ionization for the 5P3/2 state. Numerical simulations by solving the time-dependent Schrödinger equation (TDSE) can qualitatively explain the measurements of the RIMD, photoion angular distributions, and ion-yield ratio. However, some discrepancies still exist, especially for the NZM dip, which could stem from the electron-electron correlation that is neglected in the present TDSE simulations since we have adopted the single-active-electron approximation. | ||
| 700 | 1 | |a Wang, Xincheng |e VerfasserIn |0 (DE-588)1224482573 |0 (DE-627)1743891946 |4 aut | |
| 700 | 1 | |a Zhang, Linxuan |e VerfasserIn |4 aut | |
| 700 | 1 | |a Zou, Zhihan |e VerfasserIn |4 aut | |
| 700 | 1 | |a Yuan, Junyang |e VerfasserIn |0 (DE-588)1218262176 |0 (DE-627)1733698515 |4 aut | |
| 700 | 1 | |a Ma, Yixuan |e VerfasserIn |4 aut | |
| 700 | 1 | |a Lv, Rujin |e VerfasserIn |4 aut | |
| 700 | 1 | |a Shen, Zhenjie |e VerfasserIn |4 aut | |
| 700 | 1 | |a Yan, Tianmin |e VerfasserIn |4 aut | |
| 700 | 1 | |a Weidemüller, Matthias |e VerfasserIn |0 (DE-588)1044143363 |0 (DE-627)771579551 |0 (DE-576)175232601 |4 aut | |
| 700 | 1 | |a Ye, Difa |e VerfasserIn |4 aut | |
| 700 | 1 | |a Jiang, Yuhai |d 1969- |e VerfasserIn |0 (DE-588)131985809 |0 (DE-627)516335987 |0 (DE-576)298877724 |4 aut | |
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