التفاصيل البيبلوغرافية
| العنوان: |
Investigation of spatial structure and sympathetic cooling in the 9 Be + – 40 Ca + bi-component Coulomb crystals. |
| المؤلفون: |
Li, Min, Zhang, Yong, Zhang, Qian-Yu, Bai, Wen-Li, He, Sheng-Guo, Peng, Wen-Cui, Tong, Xin |
| المصدر: |
Chinese Physics B; 3/1/2023, Vol. 32 Issue 3, p1-6, 6p |
| مصطلحات موضوعية: |
FLUORESCENCE spectroscopy, ION traps, COOLING, CRYSTALS, IONS spectra |
| مستخلص: |
We study the spatial structure and sympathetic cooling of the bi-component Coulomb crystal (CC), which consists of approximate 450 9Be+ ions and 450 40Ca+ ions with a mass ratio of 0.225 in a segmented linear ion trap. By two-dimensional imaging of the bi-component CC, the 9Be+ ions are found to be surrounded by the 40Ca+ ions in the radial direction with a separation ratio of ∼ 2.0, and the axial length of the 9Be+ ions occupied area is much larger than that of the 40Ca+ ions occupied area. Combined with the previous experimental results, the structure of the 9Be+–40Ca+ CC shows the larger the difference in the mass–charge ratio, the larger the separation between the two species. The comparison of the fluorescence spectra of the 9Be+ ions in the bi-component CC and the pure CC indicates that the 9Be+ ions can be sympathetically cooled and stably localized by the laser-cooled 40Ca+ ions during the recording of the fluorescence spectrum. [ABSTRACT FROM AUTHOR] |
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