NEW ACCURATE WAVENUMBERS OF H35Cl+ AND H37Cl+ ROVIBRATIONAL TRANSITIONS IN THE v=0_1 BAND OF THE 2_ STATE.

Domenech, Jose Luis

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https://hdl.handle.net/2142/79123 Copy

Description

Title

NEW ACCURATE WAVENUMBERS OF H35Cl+ AND H37Cl+ ROVIBRATIONAL TRANSITIONS IN THE v=0_1 BAND OF THE 2_ STATE.

Author(s)

Domenech, Jose Luis

Contributor(s)

• Drouin, Brian
• Cernicharo, Jose
• Tanarro, Isabel
• Herrero, Victor Jose
• Cueto, Maite

Issue Date

25-Jun-15

Keyword(s)

Astronomy

Abstract

HCl$^+$ is a key intermediate in the interstellar chemistry of chlorine. It has been recently identified in space from {it Herschel's} spectrafootnote{M. De Luca et al., {it Astrophys. J. Lett.} {bf 751}, L37 (2012)} and it has also been detected in the laboratory through its optical emissionfootnote{W. D. Sheasley and C. W. Mathews, {it J. Mol. Spectrosc.} {bf 47}, 420 (1973)}, infraredfootnote{P. B. Davies, P. A. Hamilton, B. A. Johnson, {it Mol. Phys.} {bf 57}, 217 (1986) } and mm-wave spectrafootnote{H. Gupta, B. J. Drouin, and J. C. Pearson, {it Astrophys. J. Lett.} {bf 751}, L37 (2012) }. Now that {it Hershchel} is decomissioned, further astrophysical studies on this radical ion will likely rely on ground-based observations in the mid-infrared. We have used a difference frequency laser spectrometer coupled to a hollow cathode discharge to measure the absorption spectrum of $rm{H}^{35}rm{Cl}^+$ and $rm{H}^{37}rm{Cl}^+$ in the $v=0-1$ band of the $^2Pi$ state with Dopppler limited resolution. The accuracy of the individual measurements ($sim$ 10 MHz (3$sigma$)) relies on a solid state wavemeter referenced to an iodine-stabilized Ar$^+$ laser. The new data are being fit using the CALPGM software from JPL, and the current status will be presented.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

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http://hdl.handle.net/2142/79123

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