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Extended analysis of hydroxyacetone in the torsional ground state

Braakman, Rogier and Drouin, Brian J. and Widicus Weaver, Susanna L. and Blake, Geoffrey A. (2010) Extended analysis of hydroxyacetone in the torsional ground state. Journal of Molecular Spectroscopy, 264 (1). pp. 43-49. ISSN 0022-2852.

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The torsion–rotation spectrum of hydroxyacetone presents a highly challenging analysis problem in molecular physics. Continuing analyses of this species are compelling due to a nascent interest from astronomers, who believe hydroxyacetone may link a variety of organic chemical families observed in the interstellar medium (ISM). Recent work has demonstrated the difficulties in analysis of the millimeter spectrum, and the modestly weaker spectrum in this region has not afforded an ISM detection. We present an extension of the laboratory measurements and analysis up to the room temperature Boltzmann peak near 300 GHz, thus providing sufficient coverage to examine the ISM for the strongest features expected in star-forming hot cores. Even without subsequent detection, searches for the stronger features will produce the lowest possible upper limits of this elusive species.

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Blake, Geoffrey A.0000-0003-0787-1610
Additional Information:© 2010 Elsevier Inc. Received 4 August 2010. Available online 17 September 2010. R.B. acknowledge J. Hougen at NIST for useful discussions on internal axis system (IAM) methods. The efforts of R.B. and G.A.B. were funded in part by the NASA SARA program, Grant NAG5- 13457. Portions of this paper present research carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
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Subject Keywords:Rotational spectroscopy; Internal rotation; Torsion-rotational coupling
Issue or Number:1
Record Number:CaltechAUTHORS:20101210-092852576
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21290
Deposited By: Tony Diaz
Deposited On:11 Dec 2010 00:27
Last Modified:03 Oct 2019 02:22

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