Stable configurations of confined cold ionic systems.
Stable configurations of confined cold ionic systems.
复制标题
受限冷离子系统的稳定构型。
DOI：
10.1073/pnas.88.2.483
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发表时间：
1991
影响因子：
11.1
通讯作者：
D. Wales
中科院分区：
文献类型：
--
作者：
R. Rafac;J. Schiffer;J. Hangst;D. Dubin;D. Wales
研究了简谐势中带电粒子形成的简单结构，确定了最小势能组态。对于少于12个粒子，这些粒子形成以原点为中心的多面体。对于具有13-22个粒子的结构，一个位于中间，对于23-26个粒子，两个位于内部，等等，直到在60处开始形成第三壳。当阱的各向同性改变时，可以看到畸变和离散相变。这些结构应该对应于在非常低的温度下在离子阱中形成的结构
The simple structures formed by charged particles confined in a harmonic potential have been investigated and the configurations of minimum potential energy were identified. For fewer than 12 particles these form polyhedrons centered on the origin. For structures with 13-22 particles one sits in the middle, for 23-26 particles two are in the interior, etc., until a third shell starts forming at 60. When the isotropy of the trap is changed, distortions and discrete phase changes are seen. These structures should correspond to ones formed in ion traps at very low temperatures