Hyperfine effects on associative ionization of ultracold sodium.
Hyperfine effects on associative ionization of ultracold sodium.
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DOI：
10.1103/physrevlett.70.2074
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发表时间：
1993-04
影响因子：
8.6
通讯作者：
Wagshul;Helmerson;Lett;Rolston;Phillips;Heather;Julienne
中科院分区：
文献类型：
--
作者：
Wagshul;Helmerson;Lett;Rolston;Phillips;Heather;Julienne
由于处于不同基态超精细态的两个原子的碰撞，我们在激光冷却钠的缔合电离谱中观察到了新的共振结构。这种缔合电离是由于通过中间分子态在中等核间分离下的双共振激发所致。该共振内的子结构是分子束缚态在此过程中作用的证据。我们提出了对基态超精细结构效应进行建模的计算，其重要性在早期的理论研究中是没有预料到的
We observe a new resonance structure in the associative ionization spectrum of laser-cooled sodium due to the collision of two atoms in different ground hyperfine states. This associative ionization is due to doubly resonant excitation at moderate internuclear separation through intermediate molecular states. Substructure within this resonance is evidence for the role of molecular bound states in this process. We present calculations modeling the effect of ground-state hyperfine structure, the importance of which was unanticipated in earlier theoretical studies