Chemical pathways in ultracold reactions of SrF molecules

ORAL

Abstract

We present a theoretical investigation of the chemical reaction SrF + SrF $\rightarrow$ products, focusing on reactions at ultralow temperatures. We find that bond swapping, SrF + SrF $\rightarrow$ Sr$_2$ + F$_2$, is energetically forbidden at these temperatures. Rather, the only energetically allowed reaction is SrF + SrF $\rightarrow$ SrF$_2$ + Sr, and even then only singlet states of the SrF$_2$ 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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Authors

  • Edmund Meyer

    Dept. of Physics, Kansas State, Kansas State University

  • John Bohn

    JILA and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA, JILA, University of Colorado, JILA, NIST and Department of Physics, University of Colorado, Boulder, Colorado 80309, USA, JILA