Anderegg F, Dubin D H E, O'Neil T M, Driscoll C F
Department of Physics, University of California at San Diego, La Jolla, California 92093, USA.
Phys Rev Lett. 2009 May 8;102(18):185001. doi: 10.1103/PhysRevLett.102.185001. Epub 2009 May 6.
We measure the perpendicular-to-parallel collision rate nu perpendicular parallel in laser-cooled magnetized ion plasmas, spanning the uncorrelated to correlated regimes. In correlated regimes, we measure collision rates consistent with the "Salpeter correlation enhancement" of roughly exp(Gamma), for correlation parameters Gamma less, similar 4. This enhancement also applies to fusion in dense plasmas such as stars.
我们测量了激光冷却磁化离子等离子体中垂直与平行方向的碰撞率ν⊥∥，涵盖了从不相关到相关的区域。在相关区域，对于相关参数Γ≤4左右的情况，我们测量到的碰撞率与大致为exp(Γ)的“萨尔皮特关联增强”相一致。这种增强也适用于恒星等致密等离子体中的核聚变。
