Lifetime measurement of the first vibrationally excited state of MgH super(+) in a cryogenic Paul Trap (CryPTEx)

A method is presented to measure the decay rate of the first excited vibrational state of polar molecular ions being part of a Coulomb crystal in a cryogenic linear Paul trap. Specifically, we have monitored the decay of the |v=1,J=1> sub(X) towards the |v=0,J=0> sub(X) level in MgH super(+) b...

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Bibliographic Details
Published in:CPEM digest 2014-08, p.56-57
Main Authors: Versolato, O O, Schwarz, M, Hansen, A K, Gingell, AD, Windberger, A, Klosowski, L, Ullrich, J, Lopez-Urrutia, Crespo, Jensen, F, Drewsen, M
Format: Article
Language:English
Subjects:
Conferences
Coulomb friction
Crystals
Decay
Decay rate
Excitation
Lasers
Molecular ions
Vibrational states
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Summary:A method is presented to measure the decay rate of the first excited vibrational state of polar molecular ions being part of a Coulomb crystal in a cryogenic linear Paul trap. Specifically, we have monitored the decay of the |v=1,J=1> sub(X) towards the |v=0,J=0> sub(X) level in MgH super(+) by saturated laser excitation of the |v=0,J=2> sub(X) - |v=1,J=1> sub(X) transition followed by state selective resonance-enhanced two-photon dissociation out of the |v=0,J=2> sub(X) level. The technique can be extended to other simple molecular ions and it enables the determination, with an accuracy at the few percent level, of decay rates and thus absorption strengths.
ISSN:2160-0171
DOI:10.1109/CPEM.2014.6898256