# Knowledge Bank

## University Libraries and the Office of the Chief Information Officer

The Knowledge Bank is scheduled for regular maintenance on Sunday, April 20th, 8:00 am to 12:00 pm EDT. During this time users will not be able to register, login, or submit content.

# INFRARED ABSORPTION SPECTROSCOPY OF JET-COOLED MOLECULAR IONS

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/13265

Files Size Format View
1994-TE'-03.jpg 109.6Kb JPEG image

 Title: INFRARED ABSORPTION SPECTROSCOPY OF JET-COOLED MOLECULAR IONS Creators: Fukushima, Masaru; Chan, Man-Chor; Xu, Yunjie; Taleb-Bendiab, A.; Amano, T. Issue Date: 1994 Abstract: Protonated molecular ions $H^{+}_{3}, HN^{+}_{2}$, and $H_{3}O^{-}$ generated in a hollow-cathode” type discharge jet have recently been studied using infrared absorption spectroscopy. The rotational temperatures of these ions in the ground state were determined to be 120 $\pm 20K, 273 \pm 20 K and 150 \pm 20 K for H, HN^{+}_{2},$ and $H_{3}O^{+}$, respectively. This observation suggests different dynamics of ion formation under jet-expansion compared to usual hollow-cathode discharge cells, in which the rotational temperatures of the ions are determined by the temperature of the $coolant.^{1}$ The spectral linewidths and the concentrations of the ions at different positions of the jet stream will also discussed to shed light on the dynamic characteristics of the hollow-cathode discharge jet. URI: http://hdl.handle.net/1811/13265 Other Identifiers: 1994-TE'-03