Vibronic Spectroscopy of Sympathetically Cooled CaH.

Published

Journal Article

We report the measurement of the 11 Σ→21 Σ transition of CaH+ by resonance-enhanced photodissociation of CaH+ that is co-trapped with laser-cooled Ca+ . We observe four resonances that we assign to transitions from the vibrational v=0 ground state to the v'=1-4 excited states based on theoretical predictions. A simple theoretical model that assumes instantaneous dissociation after resonant excitation yields results in good agreement with the observed spectral features except for the unobserved v'=0 peak. This discrepancy is attributed to an insufficient understanding of the dissociation process, and further experimental and theoretical studies are required to confirm the assignment. The resolution of our experiment is limited by the mode-locked excitation laser, but this survey spectroscopy enables future rotationally resolved studies with applications in astrochemistry and precision measurement.

Full Text

Duke Authors

Cited Authors

  • Rugango, R; Calvin, AT; Janardan, S; Shu, G; Brown, KR

Published Date

  • November 2016

Published In

Volume / Issue

  • 17 / 22

Start / End Page

  • 3764 - 3768

PubMed ID

  • 27459722

Pubmed Central ID

  • 27459722

Electronic International Standard Serial Number (EISSN)

  • 1439-7641

International Standard Serial Number (ISSN)

  • 1439-4235

Digital Object Identifier (DOI)

  • 10.1002/cphc.201600645

Language

  • eng