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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2303.10360 |
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| _version_ | 1866909248800161792 |
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| author | Liang, Wei-Chen Jia, Feng-Dong Wang, Fei Zhang, Xi Wang, Yu-Han Qian, Jing-Yu Hu, Xiao-Qing Wu, Yong Wang, Jian-Guo Xue, Ping Zhong, Zhi-Ping |
| author_facet | Liang, Wei-Chen Jia, Feng-Dong Wang, Fei Zhang, Xi Wang, Yu-Han Qian, Jing-Yu Hu, Xiao-Qing Wu, Yong Wang, Jian-Guo Xue, Ping Zhong, Zhi-Ping |
| contents | Polyatomic cations $^{87}$Rb$_M^+$ ($M$ = 2, 3,$\ldots$) have been produced by cascade two-body ion-atom reactive collisions in the two-step CW-laser photoionization of laser-cooled $^{87}$Rb atoms and accumulated in the ion trap. Using resonant-excitation mass spectrometry and resonant excitation-assisted time-of-flight mass spectrometry, we directly observed and distinguished the charged reaction products. We experimentally verified the cascade generation and cascade dissociation of $^{87}$Rb$_M^+$. The populations of $^{87}$Rb$_M^+$ are quantitatively investigated by solving the rate equations. The $^{87}$Rb$^+$-$^{87}$Rb reaction rate coefficient was derived as 9.10$\times10^{-11}$ cm$^3$/s accordingly. The methods developed here for assembling and detecting homonuclear polyatomic cations can be applied to any experiment in ion-atom hybrid traps. The present study lays the foundation for exploring atomically precise metal clusters and physics from few- to many-body perspective. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_10360 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Generation of cold polyatomic cations by cascade reactive two-body ion-atom collisions Liang, Wei-Chen Jia, Feng-Dong Wang, Fei Zhang, Xi Wang, Yu-Han Qian, Jing-Yu Hu, Xiao-Qing Wu, Yong Wang, Jian-Guo Xue, Ping Zhong, Zhi-Ping Atomic Physics Chemical Physics Polyatomic cations $^{87}$Rb$_M^+$ ($M$ = 2, 3,$\ldots$) have been produced by cascade two-body ion-atom reactive collisions in the two-step CW-laser photoionization of laser-cooled $^{87}$Rb atoms and accumulated in the ion trap. Using resonant-excitation mass spectrometry and resonant excitation-assisted time-of-flight mass spectrometry, we directly observed and distinguished the charged reaction products. We experimentally verified the cascade generation and cascade dissociation of $^{87}$Rb$_M^+$. The populations of $^{87}$Rb$_M^+$ are quantitatively investigated by solving the rate equations. The $^{87}$Rb$^+$-$^{87}$Rb reaction rate coefficient was derived as 9.10$\times10^{-11}$ cm$^3$/s accordingly. The methods developed here for assembling and detecting homonuclear polyatomic cations can be applied to any experiment in ion-atom hybrid traps. The present study lays the foundation for exploring atomically precise metal clusters and physics from few- to many-body perspective. |
| title | Generation of cold polyatomic cations by cascade reactive two-body ion-atom collisions |
| topic | Atomic Physics Chemical Physics |
| url | https://arxiv.org/abs/2303.10360 |