Tomography of Feshbach resonance states

Baruch Margulis, Karl P. Horn, Daniel M. Reich, Meenu Upadhyay, Nitzan Kahn, Arthur Christianen, Ad van der Avoird, Gerrit C. Groenenboom, Markus Meuwly*, Christiane P. Koch*, Edvardas Narevicius*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Feshbach resonances are fundamental to interparticle interactions and become particularly important in cold collisions with atoms, ions, and molecules. In this work, we present the detection of Feshbach resonances in a benchmark system for strongly interacting and highly anisotropic collisions: molecular hydrogen ions colliding with noble gas atoms. The collisions are launched by cold Penning ionization, which exclusively populates Feshbach resonances that span both short- and long-range parts of the interaction potential. We resolved all final molecular channels in a tomographic manner using ion-electron coincidence detection. We demonstrate the nonstatistical nature of the final-state distribution. By performing quantum scattering calculations on ab initio potential energy surfaces, we show that the isolation of the Feshbach resonance pathways reveals their distinctive fingerprints in the collision outcome.

Original languageEnglish
Pages (from-to)77-81
Number of pages5
JournalScience
Volume380
Issue number6640
Early online date6 Apr 2023
DOIs
Publication statusPublished - 7 Apr 2023

Funding

Funding Information: We gratefully acknowledge financial support from the European Research Council Advanced Grant (E.N.), the NCCR MUST and the University of Basel (M.M.), and the Deutsche Forschungsgemeinschaft (Project “Efficient Quantum Control of Molecular Rotations,” grant 505622963) (C.P.K.). Publisher Copyright: Copyright © 2023 The Authors, some rights reserved.

All Science Journal Classification (ASJC) codes

  • General

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