Radiofrequency/infrared double resonance spectroscopy of the HD+ ion
- 10 February 1989
- journal article
- preliminary communications
- Published by Taylor & Francis in Molecular Physics
- Vol. 66 (2), 519-525
- https://doi.org/10.1080/00268978900100271
Abstract
We describe a double resonance technique for obtaining radiofrequency spectra of the HD+ ion in vibration-rotation levels close to the dissociation limit. Infrared transitions are driven by Doppler tuning an HD+ ion beam into resonance with a carbon dioxide infrared laser, and are detected by measuring H+ fragment ions produced by electric field dissociation of the upper vibration-rotation level. Radiofrequency transitions between nuclear hyperfine components of the lower vibration-rotation level are then detected through resonant increases in the H+ fragment ion current. The high spectroscopic resolution obtained, and the ability to measure magnetic dipole hyperfine transitions, will enable the hyperfine constants to be determined accurately.Keywords
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