Applications of high energy ion beam techniques in environmental science

Investigation associated with glass and ceramic waste forms

S. Thevuthasan, V. Shutthanandan, Y. Zhang

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

High energy ion beam capabilities including Rutherford backscattering spectrometry (RBS) and nuclear reaction analysis (NRA) have been very effectively used in environmental science to investigate the ion-exchange mechanisms in glass waste forms and the effects of irradiation in glass and ceramic waste forms in the past. In this study, RBS and NRA along with SIMNRA simulations were used to monitor the Na depletion and D and 18O uptake in alumina silicate glasses, respectively, after the glass coupons were exposed to aqueous solution. These results show that the formation of a reaction layer and an establishment of a region where diffusion limited ion exchange occur in these glasses during exposure to silica-saturated solutions. Different regions including reaction and diffusion regions were identified on the basis of the depth distributions of these elements. In the case of ceramics, damage accumulation was studied as a function of ion dose at different irradiation temperatures. A sigmoidal dependence of relative disorder on the ion dose was observed. The defect-dechanneling factors were calculated for two irradiated regions in SrTiO3 using the critical angles determined from the angular yield curves. The dependence of defect-dechanneling parameter on the incident energy was investigated and it was observed that the generated defects are mostly interstitial atoms and amorphous clusters. Thermal recovery experiments were performed to study the damage recovery processes up to a maximum temperature of 870 K.

Original languageEnglish
Pages (from-to)195-207
Number of pages13
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume150
Issue number2-3
DOIs
Publication statusPublished - Feb 2006
Externally publishedYes

Fingerprint

Ion beams
ion beams
ceramics
Glass
Nuclear reactions
glass
Rutherford backscattering spectroscopy
Defects
Spectrometry
Ion exchange
nuclear reactions
Irradiation
Ions
backscattering
defects
ions
Recovery
Silicates
recovery
energy

Keywords

  • Environmental science
  • Glass and ceramic waste forms
  • Ion beam analysis
  • Ion channeling
  • Ion exchange
  • Nuclear reaction analysis
  • Radiation damage
  • Rutherford backscattering spectrometry
  • Thermal recovery

ASJC Scopus subject areas

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

Cite this

Applications of high energy ion beam techniques in environmental science : Investigation associated with glass and ceramic waste forms. / Thevuthasan, S.; Shutthanandan, V.; Zhang, Y.

In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 150, No. 2-3, 02.2006, p. 195-207.

Research output: Contribution to journalArticle

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