发表机构
Joint Institute for High Temperatures, Russian Academy of Sciences（俄罗斯科学院高温物理联合研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究揭示稠密Rb蒸气中激发转移的密度依赖特性，发现高Rb密度下激发扩散特征时间的密度依赖从线性转为非线性，可通过替换特征扩散长度的定义定性描述。
AI 中文摘要
我们研究稠密铷（Rb）蒸气中非辐射偶极-偶极诱导的激发转移，发现高Rb密度下，激发扩散特征时间的密度依赖关系从线性变为非线性，这归因于偶极-偶极激发转移的二体碰撞近似失效；若将特征扩散长度的平均自由程替换为平均原子间距，观测结果可定性描述。
英文摘要
We study non-radiative dipole-dipole induced excitation transfer in dense Rb vapour. We show that density dependence of characteristic time of the excitation diffusion changes from linear to non-linear for high Rb density. It is attributed to the breakdown of binary collisions approach to the dipole-dipole excitation transfer. It is shown that the observed result can be qualitatively described if the mean free path is replaced by mean interatomic distance for the chracteristic diffusion length.
