Accurate frequency determination of vibration-rotation and rotational transitions of SiH+

Abstract

The fundamental 28SiH+ ion has been characterized in a collaborative work, utilizing a hollow-cathode-discharge laser-spectrometer and a cryogenic ion trap spectrometer. Twenty-three vibration-rotation transitions around 4.75 um have been detected with high accuracy. This has facilitated the first direct measurement of the pure rotational transition J=1<-0 at 453056.3632(4) MHz in the trap spectrometer. The measured and accurately predicted transitions enable the search for this ion in space with IR and sub-mm telescopes.

arXiv comment6 pages, 3 figures, 2 tables Accepted for publication in the Astrophysical Journal

References in corpus (7)

• Interstellar Hydrides
• New molecules in IRC+10216: confirmation of C${}_5$S and tentative identification of MgCCH, NCCP, and SiH${}_3$CN
• Submillimeter absorption from SH+, a new widespread interstellar radical, 13CH+ and HCl
• Detection of the Ammonium Ion in Space
• New accurate measurement of 36ArH+ and 38ArH+ ro-vibrational transitions by high resolution IR absorption spectroscopy
• Improved determination of the 1(0)-0(0) rotational frequency of NH3D+ from the high resolution spectrum of the v4 infrared band
• The high resolution infrared spectrum of HCl${}^{+}$

Cited by in corpus (4)

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• First laboratory detection of vibration-rotation transitions of CH${}^{+}$ and ${}^{13}$CH${}^{+}$ and improved measurement of their rotational transition frequencies
• Accurate rotational rest frequencies for ammonium ion isotopologues
• Systems Astrochemistry: A New Doctrine for Experimental Studies