Determination of ion quantity by using low-temperature ion density theory and molecular dynamics simulation

doi:10.1088/1674-1056/24/11/113703

中国物理B ›› 2015, Vol. 24 ›› Issue (11): 113703-113703.doi: 10.1088/1674-1056/24/11/113703

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Determination of ion quantity by using low-temperature ion density theory and molecular dynamics simulation

杜丽军^{a b c d}, 宋红芳^{a b c d}, 李海霞^{a b c d}, 陈邵龙^{a b c d}, 陈婷^{a b c d}, 孙焕尧^{a b c}, 黄垚^{a b c}, 童昕^{a b c}, 管桦^{a b c}, 高克林^{a b c}

a State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute ofPhysics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
b Key Laboratory of Atomic Frequency Standards, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
c Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, China;
d University of Chinese Academy of Sciences, Beijing 100049, China

收稿日期:2015-06-11 修回日期:2015-07-28 出版日期:2015-11-05 发布日期:2015-11-05
通讯作者: Guan Hua E-mail:guanhua@wipm.ac.cn
基金资助:
Project supported by the National Basic Research Program of China (Grant Nos. 2012CB821301 and 2010CB832803), the National Natural Science Foundation of China (Grant Nos. 11004222 and 91121016), and the Chinese Academy of Sciences.

Determination of ion quantity by using low-temperature ion density theory and molecular dynamics simulation

Du Li-Jun (杜丽军)^{a b c d}, Song Hong-Fang (宋红芳)^{a b c d}, Li Hai-Xia (李海霞)^{a b c d}, Chen Shao-Long (陈邵龙)^{a b c d}, Chen Ting (陈婷)^{a b c d}, Sun Huan-Yao (孙焕尧)^{a b c}, Huang Yao (黄垚)^{a b c}, Tong Xin (童昕)^{a b c}, Guan Hua (管桦)^{a b c}, Gao Ke-Lin (高克林)^{a b c}

a State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute ofPhysics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
b Key Laboratory of Atomic Frequency Standards, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;
c Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, China;
d University of Chinese Academy of Sciences, Beijing 100049, China

Received:2015-06-11 Revised:2015-07-28 Online:2015-11-05 Published:2015-11-05
Contact: Guan Hua E-mail:guanhua@wipm.ac.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant Nos. 2012CB821301 and 2010CB832803), the National Natural Science Foundation of China (Grant Nos. 11004222 and 91121016), and the Chinese Academy of Sciences.

摘要/Abstract

摘要： In this paper, we report a method by which the ion quantity is estimated rapidly with an accuracy of 4%. This finding is based on the low-temperature ion density theory and combined with the ion crystal size obtained from experiment with the precision of a micrometer. The method is objective, straightforward, and independent of the molecular dynamics (MD) simulation. The result can be used as the reference for the MD simulation, and the method can improve the reliability and precision of MD simulation. This method is very helpful for intensively studying ion crystal, such as phase transition, spatial configuration, temporal evolution, dynamic character, cooling efficiency, and the temperature limit of the ions.

关键词: ion crystal, ion quantity, low-temperature density model, molecular dynamics simulation

Abstract: In this paper, we report a method by which the ion quantity is estimated rapidly with an accuracy of 4%. This finding is based on the low-temperature ion density theory and combined with the ion crystal size obtained from experiment with the precision of a micrometer. The method is objective, straightforward, and independent of the molecular dynamics (MD) simulation. The result can be used as the reference for the MD simulation, and the method can improve the reliability and precision of MD simulation. This method is very helpful for intensively studying ion crystal, such as phase transition, spatial configuration, temporal evolution, dynamic character, cooling efficiency, and the temperature limit of the ions.

Key words: ion crystal, ion quantity, low-temperature density model, molecular dynamics simulation

中图分类号: (Ion trapping)

37.10.Ty

64.70.kp (Ionic crystals) 94.20.Fg (Plasma temperature and density) 52.65.Yy (Molecular dynamics methods)

杜丽军, 宋红芳, 李海霞, 陈邵龙, 陈婷, 孙焕尧, 黄垚, 童昕, 管桦, 高克林. Determination of ion quantity by using low-temperature ion density theory and molecular dynamics simulation[J]. 中国物理B, 2015, 24(11): 113703-113703.

Du Li-Jun (杜丽军), Song Hong-Fang (宋红芳), Li Hai-Xia (李海霞), Chen Shao-Long (陈邵龙), Chen Ting (陈婷), Sun Huan-Yao (孙焕尧), Huang Yao (黄垚), Tong Xin (童昕), Guan Hua (管桦), Gao Ke-Lin (高克林). Determination of ion quantity by using low-temperature ion density theory and molecular dynamics simulation[J]. Chin. Phys. B, 2015, 24(11): 113703-113703.

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Determination of ion quantity by using low-temperature ion density theory and molecular dynamics simulation

Determination of ion quantity by using low-temperature ion density theory and molecular dynamics simulation

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