DeVoe Ralph G
Physics Department, Stanford University, Stanford, California 94305, USA.
Phys Rev Lett. 2009 Feb 13;102(6):063001. doi: 10.1103/PhysRevLett.102.063001. Epub 2009 Feb 10.
Classical collisions with an ideal gas generate non-Maxwellian distribution functions for a single ion in a radio frequency ion trap. The distributions have power-law tails whose exponent depends on the ratio of buffer gas to ion mass. This provides a statistical explanation for the previously observed transition from cooling to heating. Monte Carlo results approximate a Tsallis distribution over a wide range of parameters and have ab initio agreement with experiment.
与理想气体的经典碰撞会在射频离子阱中为单个离子产生非麦克斯韦分布函数。这些分布具有幂律尾部，其指数取决于缓冲气体与离子质量的比值。这为之前观察到的从冷却到加热的转变提供了一种统计学解释。蒙特卡罗结果在广泛的参数范围内近似于Tsallis分布，并且与实验具有从头算一致性。
