World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

A New Modeling Tool for the Diffusion of Gases in Ice or Amorphous Binary Mixture in the Polar Stratosphere and the Upper Troposphere : Volume 9, Issue 6 (01/12/2009)

By Varotsos, C. A.

Click here to view

Book Id: WPLBN0003992399
Format Type: PDF Article :
File Size: Pages 13
Reproduction Date: 2015

Title: A New Modeling Tool for the Diffusion of Gases in Ice or Amorphous Binary Mixture in the Polar Stratosphere and the Upper Troposphere : Volume 9, Issue 6 (01/12/2009)  
Author: Varotsos, C. A.
Volume: Vol. 9, Issue 6
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2009
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Varotsos, C. A., & Zellner, R. (2009). A New Modeling Tool for the Diffusion of Gases in Ice or Amorphous Binary Mixture in the Polar Stratosphere and the Upper Troposphere : Volume 9, Issue 6 (01/12/2009). Retrieved from http://www.ebooklibrary.org/


Description
Description: Department of Applied Physics, University of Athens, Athens, Greece. To elaborate stratospheric ozone depletion processes, measurements of diffusion coefficients of selected gas phase molecules (i.e. HCl, CH3OH, HCOOH and CH3COOH) in ice in the temperature range 170–195 K have been analyzed with respect to the mechanisms and rates of diffusion. It is argued that the diffusion in ice of these compounds is governed by a vacancy – mediated mechanism, i.e. H2O vacancies are required to diffuse to lattice sites adjacent to these compounds prior to the diffusion of the corresponding molecule into the vacancy sites. In addition, we show that the diffusion coefficients of these compounds exhibit a specific interconnection, i.e. a linear relationship holds between the logarithm of the pre-exponential factor, Do, and the activation energy E. The physical meaning of this interconnection is discussed.

Summary
A new modeling tool for the diffusion of gases in ice or amorphous binary mixture in the polar stratosphere and the upper troposphere

Excerpt
Chandra, S. and Varotsos, C. A.: Recent trends of the total column ozone-implications for the Mediterranean region, Int. J. Remote Sens., 16, 1765–1769, 1995.; Domine, F. and Xueref, I.: Evaluation of depth profiling using Laser resonant desorption as a method to measure diffusion coefficients in ice, Anal. Chem., 73, 4348–4353, 2001.; Gernandt, H., Goersdorf, U., Claude, H., and Varotsos, C. A.: Possible impact of polar stratospheric processes on midlatitude vertical ozone distributions, Int. J. Remote Sens., 16, 1839–1850, 1995.; Goto, K., Hondoh, T., and Higashi, A.: Determination of Diffusion-Coefficients of Self-Interstitials in Ice with a New Method of Observing Climb of Dislocations by X-Ray Topography, Jpn. J. Appl. Phys., 25, 351–357, 1986.; Hondoh, T., Goto, A., Hoshi, R., Ono, T., Anzai, H., Kawase, R., Pinienta, P., and Mae, S.: Utilization of high speed x-ray topography for determining diffusion coefficients of point defects in nearly perfect crystals, Rev. Sci. Instr., 60, 2494–2497, 1989.; Krasnopoler, A. and George, S. M.: Infrared resonant desorption of H2O from ice multilayers, J. Phys. Chem. B, 102, 788–794, 1998.; Livingston, F. E. and George, S. M.: Effect of HNO3 and HCl on HDO Diffusion on Crystalline D2O Ice Multilayers, J. Phys. Chem. B, 103, 4366–4376, 1999.; Livingston, F. E. and George, S. M.: Diffusion kinetics of HC1 hydrates in ice measured using infrared laser resonant desorption depth-profiling, J. Phys. Chem. A, 105, 5155–5164, 2001.; Livingston, F. E., Smith, J. A., and Goerge, S. M.: Depth-profiling and diffusion measurements in ice films using infrared laser resonant desorption, Anal. Chem., 72, 5590–5599, 2000.; Livingston, F. E., Smith, J. A., and George, S. M.: General trends for bulk diffusion in ice and surface diffusion on ice, J. Phys. Chem. A, 106, 6309–6318, 2002.; Livingston, F. E., Whipple, G. C., and George, S. M.: Diffusion of HDO into single-crystal (H2O)-O-16 ice multilayers: Comparison with (H2O)-O-18, J. Phys. Chem. B, 101, 6127–6131, 1997.; Livingston, F. E., Whipple, G. C., and George, S. M.: Surface and bulk diffusion of HDO on ultrathin single-crystal ice multilayers on Ru(001), J. Chem. Phys., 108, 2197–2207, 1998.; Nehme, R.: Diploma-thesis, University of Duisburg-Essen, edited by: Behr, P., Nehme, R., Zellner, R., in preparation, 2006.; Petrenko, V. F. and Whitworth, R. W.: Physics of Ice, New York, Oxford University Press, 1999.; Solomon, S.: The Mystery of the Antarctic Ozone Hole, Rev. Geophys., 26, 131–148, 1988.; Tabazadeh, A. and Turco, R. P.: A Model for Heterogeneous Chemical Processes on the Surfaces of Ice and Nitric-Acid Trihydrate Particles, J. Geophys. Res., 98(D7), 12727–12740, 1993.; Varotsos, P.: On the temperature variation of the bulk modulus of mixed alkali halides, Phys. Status Solidi B, 99, K93–K96, 1980.; Varotsos, P. A. and Alexopoulos, K.: Curvature in conductivity plots of silver-halides as a consequence of anharmonicity, J. Phys. Chem. Solids, 39, 759–761, 1978.; Varotsos, P. and Alexopoulos, K.: On the possibility of the enthalpy of a Shottky defect decreasing with increasing temperature, J. Phys. C Solid State, 12, L761–L764, 1979.; Varotsos, P. and Alexopoulos, K.: Migration entropy for the bound fluorine motion in alkaline-earth fluorides, J. Phys. Chem. Solids, 41, 443–446, 1980.; Varotsos, P. and Alexopoulos, K.: Migration parameters for the bound fluorine motion in alkaline-earth fluorides II, J. Phys. Chem. Solids, 42, 409–410, 1981.; Varotsos, P. and Alexopoulos, K.: Thermodynamics of Point Defects and their relation with the bulk properties, Eds. S. Amelinckx, R. Gevers, and J. Nihoul, North Holland, 474 pp., 1986.; Varotsos, P., Alexopoulos, K., and Nomikos, K.: Comments on the pressure variation of the Gibbs energy for bound and unbound defects, Phys. Status Solidi B, 111, 581–590, 1982.; Varotsos, P., Alexopoulos, K., Varotsos, C., and Lazaridou, M.: Interconn

 

Click To View

Additional Books


  • Observationally Derived Transport Diagno... (by )
  • Transport of Aerosol Pollution in the Ut... (by )
  • Oh Initiated Heterogeneous Oxidation of ... (by )
  • The Genesis of Typhoon Nuri as Observed ... (by )
  • Primary and Secondary Organic Carbon Dow... (by )
  • Primary and Secondary Biomass Burning Ae... (by )
  • The Millennium Water Vapour Drop in Chem... (by )
  • Nitrogen Oxides Measurements in an Amazo... (by )
  • X-ray Computed Microtomography of Sea Ic... (by )
  • Characteristics of Atmospheric Ammonia O... (by )
  • Validation of Hno3, Clono2, and N2O5 fro... (by )
  • Organosulfates and Organic Acids in Arct... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.