Investigation of spatial structure and sympathetic cooling in the 9Be+-40Ca+ bi-component Coulomb crystals

被引：5

作者：

Li, Min ^{[1
,2
]}

Zhang, Yong ^{[1
,2
]}

Zhang, Qian-Yu ^{[1
,2
]}

Bai, Wen-Li ^{[1
,2
]}

He, Sheng-Guo ^{[1
]}

Peng, Wen-Cui ^{[1
]}

Tong, Xin ^{[1
]}

机构：

[1] Chinese Acad Sci, Innovat Acad Precis Measurement Sci & Technol, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

CHINESE PHYSICS B | 2023年 / 32卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Coulomb crystals; sympathetic cooling; fluorescence spectrum; IONS;

D O I：

10.1088/1674-1056/ac70b2

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the spatial structure and sympathetic cooling of the bi-component Coulomb crystal (CC), which consists of approximate 450 Be-9(+) ions and 450 Ca-40(+) ions with a mass ratio of 0.225 in a segmented linear ion trap. By two-dimensional imaging of the bi-component CC, the Be-9(+) ions are found to be surrounded by the Ca-40(+) ions in the radial direction with a separation ratio of similar to 2.0, and the axial length of the Be-9(+) ions occupied area is much larger than that of the Ca-40(+) ions occupied area. Combined with the previous experimental results, the structure of the Be-9(+)-Ca-40(+) 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 Be-9(+) ions in the bi-component CC and the pure CC indicates that the Be-9(+) ions can be sympathetically cooled and stably localized by the laser-cooled Ca-40(+) ions during the recording of the fluorescence spectrum.

引用

页数：6

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