A Study of Solid CO2/H2O and CO2/CH3OH by XPS

T. R. Dillingham, D. M. Cornelison

Research output: Contribution to journalReview articlepeer-review

5 Scopus citations


High quality solid CO2/H2O and CO2/CH3OH films have been grown on a stainless steel cold-finger using a continuous flow liquid nitrogen system. The solid (or ice) was formed from research grade (99.995% min. purity) isotopic 13CO2 gas, and ultrapure water vapor or methanol vapor. The isotopic 13CO2 gas was used to distinguish it from any background CO2 gas in the vacuum system. The gases were mixed in a stainless steel prechamber with the pressure monitored using an MKS capacitance manometer. The base pressure in the analysis chamber was less than 5 × 10−10 T prior to deposition and upon gas introduction was inceased, using a precision leak valve, to approximately 2 × 10−8 T. Films were grown at this pressure for approximately 1 h. Gas purity was monitored using a Balzers Prisma QMS 300 quadrupole mass spectrometer. The nucleated films were characterized using x-ray photoelectron spectroscopy (XPS). The reported spectra include survey and high resolution scans of the major photoelectron peaks.

Original languageEnglish (US)
Pages (from-to)146-152
Number of pages7
JournalSurface Science Spectra
Issue number2
StatePublished - Apr 1 1999

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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