Infrared and vapor flux studies of vapor-deposited amorphous and crystalline water ice films between 90 and 145 K

Sabrina La Spisa, Matthew Waldheim, Jaime Lintemoot, Tiffany Thomas, Janelle Naff, Marin S Robinson

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Three methods were simultaneously employed to investigate vapor-deposited water ice films (90-145 K) in a high-vacuum chamber: grazing-angle Fourier transform infrared (FTIR)-reflection absorption spectroscopy to characterize ice phase; optical interference methods to monitor ice density, growth rate, and film thickness; and gas phase mass spectrometry to monitor sublimation flux during annealing. The results of this work were used to further describe the physical properties of amorphous and crystalline ice, with the goal of achieving greater consensus regarding the structure, density, and vapor flux of amorphous ice. Amorphous and crystalline ice were clearly distinguishable using grazing-angle FTIR spectroscopy. Vapor-deposited films (deposited between 0.1 and 10 nm s-1) appeared amorphous at temperatures below 105 K and crystalline above 120 K. Between 110 and 115 K, amorphous ice, crystalline ice, or a mixture of both was observed, inconsistent with the prediction that ice will be crystalline in this regime [Kouchi et al., 1994]. Upon annealing (1-2 K min-1), amorphous ice underwent a phase change to crystalline ice between 147 and 154 K. The density of ice at 90 K was slightly greater (0.94 ± 0.01 g cm-3) than the density of ice above 110 K (0.93 ± 0.01 g cm-3), consistent with literature values for bulk amorphous (excluding micropores) and crystalline ice. Sublimation flux was examined in light of the proposed existence of two metastable phases of amorphous ice: low-density amorphous and restrained amorphous [Jenniskens et al., 1998]. No supporting evidence was provided; however, our techniques cannot rule out their proposed existence.

Original languageEnglish (US)
Pages (from-to)33351-33361
Number of pages11
JournalJournal of Geophysical Research E: Planets
Volume106
Issue numberE12
StatePublished - Dec 25 2001

Fingerprint

Ice
vapors
films (materials)
ice
Vapors
Fluxes
Crystalline materials
Infrared radiation
Water
water
sublimation
annealing
Sublimation
grazing
Annealing
Light interference
micropores
Metastable phases
monitoring
infrared reflection

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Atmospheric Science
  • Geochemistry and Petrology
  • Geophysics
  • Oceanography
  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Infrared and vapor flux studies of vapor-deposited amorphous and crystalline water ice films between 90 and 145 K. / La Spisa, Sabrina; Waldheim, Matthew; Lintemoot, Jaime; Thomas, Tiffany; Naff, Janelle; Robinson, Marin S.

In: Journal of Geophysical Research E: Planets, Vol. 106, No. E12, 25.12.2001, p. 33351-33361.

Research output: Contribution to journalArticle

La Spisa, Sabrina ; Waldheim, Matthew ; Lintemoot, Jaime ; Thomas, Tiffany ; Naff, Janelle ; Robinson, Marin S. / Infrared and vapor flux studies of vapor-deposited amorphous and crystalline water ice films between 90 and 145 K. In: Journal of Geophysical Research E: Planets. 2001 ; Vol. 106, No. E12. pp. 33351-33361.
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