A Chessplaying Astronomer by Edward Winter

By Edward Winter

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An example of time-resolved study is given in this section with the investigation of the formation of ZnO nanoparticles from solutions. The control of the size of nanoparticles is of prime importance on the optimisation of the properties of the final materials. For chemical preparation 24 V. Briois (1), Ch. Giorgetti (1), F. Baudelet (1), A. M. Flank (1), M. S. Tokumoto (2), S. H. Pulcinelli (2) and C. V. Santilli (2) routes involving hydrolysis-condensation processes, this task can be achieved by XAS investigation of the structure of the different building blocks during the solid-state growth, as reported for Ce [23], Cr and Zn [18], Ga [24] or Ni [25] cations.

J. Rehr and S. Conradson, Phys. Rev. B58, 7565, (1998). F. Baudelet et al. Phys. Rev. B 43, 5857, (1991). C. V. Santilli, S. H. Pulcinelli, G. E. S. Brito and V. Briois, J. Phys. Chem. B 103, 2660, (1999). M. S. Tokumoto, A. Smith, C. V. Santilli, S. H. Pulcinelli, E. Elkaim and V. Briois, J. Non Cryst. Sol. 273, 302, (2000). V. Briois, S. H. Pulcinelli and C. V. Santilli, J. Mat. Sc. Lett. 20, 555, (2001). 30 V. Briois (1), Ch. Giorgetti (1), F. Baudelet (1), A. M. Flank (1), M. S. Tokumoto (2), S.

The first point will not be discussed herein but can be found in specialized books [3, 6]. sin(2kRij+)ij(k)) (2) where Nj is the number of atoms in the jth scattering shell at distance Rij from the absorbing atom i, Vj is the Debye-Waller factor which takes into account thermal and static disorders inside the jth shell, O(k) is the photoelectron mean free path, S02 is an amplitude reduction factor reflecting multi-electron effects, Aj(ʌ,k) is the backscattering amplitude function relative to the jth shell and )ij (k) is the phase shift relative to the absorbing i and neighbour j pair.

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