Volume 516, June-July 2010
|Number of page(s)||2|
|Published online||22 June 2010|
Letter to the Editor
Rotational transitions of CH2D+ determined by high-resolution IR spectroscopy
I. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany e-mail: email@example.com
Accepted: 10 May 2010
Context. Deuterated forms of CH are responsible for deuterium fractionation in warmer environments. Current searches for CH2D+ are hampered by a lack of accurate laboratory data.
Aims. We demonstrate that IR spectroscopy at very high resolution can make accurate rotational predictions.
Methods. By combining a low-temperature ion trap with a narrow-bandwidth IR light source, we are able to measure vibrational transitions with high accuracy. A subsequent fit using an asymmetric rotor model allows predictions of MHz accuracy or even better.
Results. We predict rotational transitions up to 1.5 THz.
Key words: methods: laboratory / ISM: molecules / submillimeter: ISM
© ESO, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.