Multichannel photoionization of cold strontium atoms
The multichannel single photoionization of cold strontium atoms is investigated experimentally and theoretically with 800-nm femtosecond laser pulses of 35-fs duration at laser intensities of 3-6 TW/cm2. The photoelectron energy spectra exhibit rich multipeak structures, which are identified as the...
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2024
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| In: |
Physical review
Year: 2024, Volume: 110, Issue: 3, Pages: 033114-1 - 033114-9 |
| ISSN: | 2469-9934 |
| DOI: | 10.1103/PhysRevA.110.033114 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevA.110.033114 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.110.033114 
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| Author Notes: | Shushu Ruan, Yongyan Han, Zhenjie Shen, Xinglong Yu, Yong-Kang Fang, Xincheng Wang, Ahai Chen, Jie Liu, Zhixian Wu, Kiyoshi Ueda, Matthias Weidemüller, Bing Zhu, Liang-You Peng, and Yuhai Jiang |
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| 520 | |a The multichannel single photoionization of cold strontium atoms is investigated experimentally and theoretically with 800-nm femtosecond laser pulses of 35-fs duration at laser intensities of 3-6 TW/cm2. The photoelectron energy spectra exhibit rich multipeak structures, which are identified as the multichannel ionization of the ground state 5210 and excited states 5511, 5532, and 5412. The photoelectron momentum distributions reveal distinct structures, and the corresponding photoelectron angular distributions provide valuable insights into the multiphoton ionization dynamics. As the laser intensity increases, the locations of the photoelectron energy peaks originating from the ionization of the excited states 5532 and 5512 remain unshifted, indicating the existence of Freeman resonance. The profiles from numerical solutions of the time-dependent Schrödinger equation (TDSE) are generally in agreement with the experimental results. However, some discrepancies, i.e., the ratio of partial waves contributing to the final states and tiny structures caused by resonance, may arise from the incomplete modeling of the valence-electron correlation effect in the present TDSE simulations based on the single-active-electron approximation. | ||
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| 700 | 1 | |a Shen, Zhenjie |e VerfasserIn |4 aut | |
| 700 | 1 | |a Yu, Xinglong |e VerfasserIn |4 aut | |
| 700 | 1 | |a Fang, Yong-Kang |e VerfasserIn |4 aut | |
| 700 | 1 | |a Wang, Xincheng |e VerfasserIn |4 aut | |
| 700 | 1 | |a Chen, Ahai |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Wu, Zhixian |e VerfasserIn |4 aut | |
| 700 | 1 | |a Ueda, Kiyoshi |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Peng, Liang-You |e VerfasserIn |4 aut | |
| 700 | 1 | |a Jiang, Yuhai |e VerfasserIn |4 aut | |
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