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

• 作者: 孙焕尧 宋红芳 李海霞 杜丽军 童昕 管桦 陈婷 陈邵龙 高克林 黄垚
• 来源期刊: 中国物理B（英文版）
• 关键词: ion crystal ion quantity low-temperature density model molecular dynamics simulation
• 年，卷（期）: 2015,（11）
• 页码范围: 113703-1-113703-6
• 页数: 1页
• 语种: 英文
• DOI: 10.1088/1674-1056/24/11/113703

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.