Chemical pathways in ultracold reactions of SrF molecules

被引：17
|
作者：
Meyer, Edmund R.
Bohn, John L.
机构：
[1] Univ Colorado, JILA, NIST, Boulder, CO 80309 USA
[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA
来源：
PHYSICAL REVIEW A | 2011年 / 83卷 / 03期
关键词：
DISSOCIATION-ENERGIES; CA;
D O I：
10.1103/PhysRevA.83.032714
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a theoretical investigation of the chemical reaction SrF + SrF -> products, focusing on reactions at ultralow temperatures. We find that bond swapping SrF + SrF -> Sr-2 + F-2 is energetically forbidden at these temperatures. Rather, the only energetically allowed reaction is SrF + SrF -> SrF2 + Sr, and even then only singlet states of the SrF2 trimer can form. A calculation along a reduced reaction path demonstrates that this abstraction reaction is barrierless and proceeds by one SrF molecule "handing off" a fluorine atom to the other molecule.
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页数：7
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