Browsing by Author "Jaoul O."

Browsing by Author "Jaoul O."

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  • ANISOTROPY OF OXYGEN DIFFUSION IN DIOPSIDE 
    Ingrin J.; Pacaud L.; Jaoul O. (2001)
    18O diffusion coefficients have been measured by nuclear reaction analysis (NRA) in Fe-free synthetic diopside single crystals along the three crystallographic directions and in Fe-bearing natural diopside single crystals ...
  • CALCIUM SELF-DIFFUSION IN NATURAL DIOPSIDE SINGLE CRYSTALS 
    Dimanov A.; Jaoul O.; Sautter V. (1996)
    We have measured the diffusion coefficient of 44Ca along and perpendicular to c direction in natural Fe-bearing (~2 at.%) diopside single crystals. Specimens were annealed at temperatures ranging from 1000 to 1250oC, with ...
  • PB DIFFUSION IN MONAZITE: AN EXPERIMENTAL STUDY OF PB2 + + TH4 + ↔ 2 ND3 + INTERDIFFUSION 
    Gardes E.; Jaoul O.; Montel J.M.; Seydoux-Guillaume A.M.; Wirth R. (2006)
    We have measured Pb diffusivity in synthetic NdPO4 crystals from an epitaxial Nd0.66Pb0.17Th0.17PO4 thin film deposited on (-1 0 1) faces. Annealings were performed at room pressure at temperatures ranging from 1200 to ...
  • SILICON DIFFUSION IN SILICATE MINERALS 
    Bejina F.; Jaoul O. (1997)
    Recently obtained silicon self-diffusion data, DSi = D0exp(- ΔH/RT), in silicates (quartz, vitreous silica, forsterite, San Carlos olivine and diopside) show a compensation law that is a linear relation, log D0 = log D* + ...