quantitativeevaluationofspacechargeeffectsoflasercooledthreedimensionalionsystemonasecularmotionperiodscale

	quantitativeevaluationofspacechargeeffectsoflasercooledthreedimensionalionsystemonasecularmotionperiodscale
	Du Lijun 1; Song Hongfang 2; Chen Shaolong 2; Huang Yao 2; Tong Xin 2; Guan Hua 2; Gao Kelin 2
刊名	chinesephysicsb
	2018
卷号	27 期号:4 页码:043701
ISSN号	1674-1056
英文摘要	In this paper, we introduce a method of quantitatively evaluating and controlling the space charge effect of a lasercooled three-dimensional (3D) ion system in a linear Paul trap. The relationship among cooling efficiency, ion quantity, and trapping strength is analyzed quantitatively, and the dynamic space distribution and temporal evolution of the 3D ion system on a secular motion period time scale in the cooling process are obtained. The ion number influences the eigen-micromotion feature of the ion system. When trapping parameter q is ~ 0.3, relatively ideal cooling efficiency and equilibrium temperature can be obtained. The decrease of axial electrostatic potential is helpful in reducing the micromotion heating effect and the degradation in the total energy. Within a single secular motion period under different cooling conditions, ions transform from the cloud state (each ion disperses throughout the envelope of the ion system) to the liquid state (each ion is concentrated at a specific location in the ion system) and then to the crystal state (each ion is subjected to a fixed motion track). These results are conducive to long-term storage and precise control, motion effect suppression, high-efficiency cooling, and increasing the precision of spectroscopy for a 3D ion system.
语种	英语
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/19113]
专题	中国科学院武汉物理与数学研究所
作者单位	1.China Academy of Space Technology 2.中国科学院武汉物理与数学研究所
推荐引用方式 GB/T 7714	Du Lijun,Song Hongfang,Chen Shaolong,et al. quantitativeevaluationofspacechargeeffectsoflasercooledthreedimensionalionsystemonasecularmotionperiodscale[J]. chinesephysicsb,2018,27(4):043701.
APA	Du Lijun.,Song Hongfang.,Chen Shaolong.,Huang Yao.,Tong Xin.,...&Gao Kelin.(2018).quantitativeevaluationofspacechargeeffectsoflasercooledthreedimensionalionsystemonasecularmotionperiodscale.chinesephysicsb,27(4),043701.
MLA	Du Lijun,et al."quantitativeevaluationofspacechargeeffectsoflasercooledthreedimensionalionsystemonasecularmotionperiodscale".chinesephysicsb 27.4(2018):043701.