One hundred and fifty-three diatomic molecules, molecular ions, and radicals of astrophysical interest

Singh, Mohit; Chaturvedi, Jai Prakash

doi:10.1007/bf00644461

Cited by 27 publications

(1 citation statement)

References 357 publications

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“…Diatomic hydrides are the simplest molecules with dipole-allowed rovibrational transitions. Such species like CH, OH, and NH can be readily observed in the interstellar medium (ISM) both in their neutral and singlyionized states [1][2][3]. In general, their abundances in the ISM are derived from mm-wave and deep infra-red (IR) absorption and emission lines [4] for which precise knowledge of the relevant rovibrational transition strengths is required.…”

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confidence: 99%

Decay Rate Measurement of the First Vibrationally Excited State ofMgH+in a Cryogenic Paul Trap

et al. 2013

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We present a method to measure the decay rate of the first excited vibrational state of polar molecular ions that are part of a Coulomb crystal in a cryogenic linear Paul trap. Specifically, we have monitored the decay of the |ν = 1, J = 1)(X) towards the |ν = 0, J = 0)(X) level in MgH+ by saturated laser excitation of the |ν = 0, J = 2)(X)-|ν = 1, J = 1)(X) transition followed by state selective resonance enhanced two-photon dissociation out of the |ν = 0, J=2)(X) level. The experimentally observed rate of 6.32(0.69) s(-1) is in excellent agreement with the theory value of 6.13(0.03) s(-1) (this Letter). The technique enables the determination of decay rates, and thus absorption strengths, with an accuracy at the few percent level.

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confidence: 99%