Model for nuclear spin product-state distributions of ultracold chemical reactions in magnetic fields

Quéméner, Goulven; Hu, Ming-Guang; Liu, Yu; Nichols, Matthew A.; Zhu, Lingbang; Ni, Kang-Kuen

doi:10.1103/physreva.104.052817

Model for nuclear spin product-state distributions of ultracold chemical reactions in magnetic fields

Journal Article · Mon Nov 29 00:00:00 EST 2021 · Physical Review A

DOI:https://doi.org/10.1103/physreva.104.052817· OSTI ID:1979604

^[1]; ^[2]; Liu, Yu ^[2]; ^[2]; Zhu, Lingbang ^[2]; Ni, Kang-Kuen ^[2]

Univ. Paris-Saclay, Orsay (France). Laboratoire Aimé Cotton; OSTI
Harvard Univ., Cambridge, MA (United States); Harvard-MIT Center for Ultracold Atoms, Cambridge, MA (United States)

Based on a theoretical model where the nuclear spins remain unchanged during a collision, we provide an analytical and general expression for the nuclear spin state-to-state distribution of an ultracold diatom-diatom chemical reaction in a magnetic field, for given rotational transitions of the molecules. It simply requires knowledge of the field-dependent eigenfunctions of the molecular reactants and products of the chemical reaction. The final state-to-state distribution drastically changes with the magnetic field. When the distribution is summed over all the final products, a simplified expression is found where only the knowledge of the eigenfunctions of the molecular reactants is required. The present theoretical formalism has been successfully used to explain the magnetic field behavior of the product-state distribution in chemical reactions of ultracold KRb molecules [Hu et al., Nat. Chem. 13, 435 (2021)].

View Accepted Manuscript (DOE)

Research Organization:: Harvard Univ., Cambridge, MA (United States)

Sponsoring Organization:: Agence Nationale de la Recherche (ANR); David and Lucile Packard Foundation; USDOE Office of Science (SC)

Grant/Contract Number:: SC0019020

OSTI ID:: 1979604

Journal Information:: Physical Review A, Journal Name: Physical Review A Journal Issue: 5 Vol. 104; ISSN 2469-9926

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
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Model for nuclear spin product-state distributions of ultracold chemical reactions in magnetic fields

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