a Continuous Supersonic Expansion Discharge Nozzle for Rotationally Cold Ions

Details a Continuous Supersonic Expansion Discharge Nozzle for Rotationally Cold Ions a Continuous Supersonic Expansion Discharge Nozzle for Rotationally Cold Ions

Jun 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mss..confete04k&link_type=abstract

"International Symposium On Molecular Spectroscopy, 64th Meeting, Held 22-26 June, 2009 at Ohio State University. http://molspec

Astronomy and Astrophysics

Astronomy

Radicals And Ions

Scientific paper

Molecular ions play an important role in chemistry and astronomy. In particular, molecular ions are key reaction intermediates, and in the interstellar medium, where temperatures and densities are low, they dominate the chemistry. Studying these ions spectroscopically in the laboratory poses a difficult challenge due to their reactivity. In our effort to study molecular ions, our research group is building SCRIBES (Sensitive Cooled Resolved Ion BEam Spectroscopy), which combines a cold ion source, mass spectrometry, and cavity ring-down spectroscopy. With this apparatus, we will be able to record rotationally-resolved gas-phase spectra, enabling interstellar searches for these species. The SCRIBES instrument requires a source of rotationally cold ions, and this has been accomplished by coupling a supersonic expansion with an electric discharge. Other groups (e.g. Thaddeus and McCarthy at Harvard, Salama et. al at NASA-Ames) have produced cold ions in a similar fashion, but always with a pulsed discharge source. Due to our need for a continuous ion source for SCRIBES, we have designed a continuous supersonic expansion discharge nozzle. We will discuss the various design factors considered during the construction of our continuous self-aligning cold ion source.

Affiliated with

Also associated with

No associations

Rating

a Continuous Supersonic Expansion Discharge Nozzle for Rotationally Cold Ions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with a Continuous Supersonic Expansion Discharge Nozzle for Rotationally Cold Ions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and a Continuous Supersonic Expansion Discharge Nozzle for Rotationally Cold Ions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1642329