Direct determination of particle-particle interactions in a 2D plasma dust crystal.
Direct determination of particle-particle interactions in a 2D plasma dust crystal.
复制标题
直接测定二维等离子体尘埃晶体中的粒子-粒子相互作用。
DOI：
10.1103/physrevlett.87.235001
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发表时间：
2001
影响因子：
8.6
通讯作者：
R. Buss
中科院分区：
文献类型：
--
作者：
G. Hebner;M. Riley;D. Johnson;P. Ho;R. Buss
粒子间的相互作用直接由抛物势阱中二维等离子体尘埃晶体的横向压缩来确定。测量的颗粒分离结合状态方程的晶体被用来推导出的颗粒筛选长度和颗粒上的电荷的值。抛物线势阱的形状通过观察单个粒子落入势阱内的轨迹来证实。未观察到横向颗粒-颗粒结合的证据。
Particle interactions were directly determined from the lateral compression of two-dimensional plasma dust crystals confined in a parabolic potential well. Measured particle separations combined with an equation of state for the crystal were used to derive values for the particle screening length and the charge on the particles. The shape of the parabolic potential well was confirmed by observing trajectories of single particles falling within the well. No evidence of a lateral particle-particle binding was observed.