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Vibronic Spectroscopy of Sympathetically Cooled CaH.

Publication ,  Journal Article
Rugango, R; Calvin, AT; Janardan, S; Shu, G; Brown, KR
Published in: Chemphyschem : a European journal of chemical physics and physical chemistry
November 2016

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.

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Published In

Chemphyschem : a European journal of chemical physics and physical chemistry

DOI

EISSN

1439-7641

ISSN

1439-4235

Publication Date

November 2016

Volume

17

Issue

22

Start / End Page

3764 / 3768

Related Subject Headings

  • Chemical Physics
  • 3406 Physical chemistry
  • 3403 Macromolecular and materials chemistry
  • 0307 Theoretical and Computational Chemistry
  • 0306 Physical Chemistry (incl. Structural)
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

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Rugango, R., Calvin, A. T., Janardan, S., Shu, G., & Brown, K. R. (2016). Vibronic Spectroscopy of Sympathetically Cooled CaH. Chemphyschem : A European Journal of Chemical Physics and Physical Chemistry, 17(22), 3764–3768. https://doi.org/10.1002/cphc.201600645
Rugango, René, Aaron T. Calvin, Smitha Janardan, Gang Shu, and Kenneth R. Brown. “Vibronic Spectroscopy of Sympathetically Cooled CaH.Chemphyschem : A European Journal of Chemical Physics and Physical Chemistry 17, no. 22 (November 2016): 3764–68. https://doi.org/10.1002/cphc.201600645.
Rugango R, Calvin AT, Janardan S, Shu G, Brown KR. Vibronic Spectroscopy of Sympathetically Cooled CaH. Chemphyschem : a European journal of chemical physics and physical chemistry. 2016 Nov;17(22):3764–8.
Rugango, René, et al. “Vibronic Spectroscopy of Sympathetically Cooled CaH.Chemphyschem : A European Journal of Chemical Physics and Physical Chemistry, vol. 17, no. 22, Nov. 2016, pp. 3764–68. Epmc, doi:10.1002/cphc.201600645.
Rugango R, Calvin AT, Janardan S, Shu G, Brown KR. Vibronic Spectroscopy of Sympathetically Cooled CaH. Chemphyschem : a European journal of chemical physics and physical chemistry. 2016 Nov;17(22):3764–3768.
Journal cover image

Published In

Chemphyschem : a European journal of chemical physics and physical chemistry

DOI

EISSN

1439-7641

ISSN

1439-4235

Publication Date

November 2016

Volume

17

Issue

22

Start / End Page

3764 / 3768

Related Subject Headings

  • Chemical Physics
  • 3406 Physical chemistry
  • 3403 Macromolecular and materials chemistry
  • 0307 Theoretical and Computational Chemistry
  • 0306 Physical Chemistry (incl. Structural)
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics