IP determination and 1+1 REMPI spectrum of SiO at 210–220 nm in an ion trap: Implications for SiO+ ion trap loading

Patrick R. Stollenwerk, Ivan O. Antonov, Brian C. Odom

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The 1+1 REMPI spectrum of SiO in the 210–220 nm range was recorded. Observed bands were mostly assigned to the vibrational bands v=0-3,v=5-10 of the A-X electronic transition. Additionally, a band near 216–217 nm was tentatively assigned as a 2-photon transition from X to the n=12,13 [X2Σ+,v+=1] Rydberg states. Based on observed lines we estimated the IP of SiO to be 11.594(5) eV. The SiO+ cation has previously been identified as having a cycling transition useful for state control by optical pumping. Our work allowed us to identify an efficient method for loading an ion trap with rotationally and vibrationally cold SiO+ from an ablated sample of SiO by photoionizing through the (5,0) A-X band at 213.977 nm.

Original languageEnglish (US)
Pages (from-to)40-45
Number of pages6
JournalJournal of Molecular Spectroscopy
Volume355
DOIs
StatePublished - Jan 2019

Funding

We thank the Northwestern University Research Shop for their work machining parts of the apparatus used in this experiment. This work was supported by ARO Grant No. W911NF-14-0378 and ONR Grant No. N00014-17-1-2258. We thank the Northwestern University Research Shop for their work machining parts of the apparatus used in this experiment. This work was supported by ARO Grant No. W911NF-14-0378 and ONR Grant No. N00014-17-1-2258 .

Keywords

  • Cold molecules
  • Ion traps
  • Ionization potential
  • REMPI
  • SiO

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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