Killian T C, Lim M J, Kulin S, Dumke R, Bergeson S D, Rolston S L
National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8424, USA.
Phys Rev Lett. 2001 Apr 23;86(17):3759-62. doi: 10.1103/PhysRevLett.86.3759.
We study the formation of Rydberg atoms in expanding plasmas at temperatures of 1-1000 K and densities from 10(5)-10(10) cm(-3). Up to 20% of the initially free charges recombine in about 100 micros, and the binding energy of the Rydberg atoms approximately equals the increase in the kinetic energy of the remaining free electrons. Three-body recombination is expected to dominate in this regime, yet most of our results are inconsistent with this mechanism.
我们研究了在温度为1 - 1000K、密度为10⁵ - 10¹⁰cm⁻³的膨胀等离子体中里德堡原子的形成。高达20%的初始自由电荷在约100微秒内复合,并且里德堡原子的结合能大约等于剩余自由电子动能的增加量。在这种情况下预计三体复合占主导,但我们的大多数结果与该机制不一致。