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Microclusters Edited by S. Sugano, Y. Nishina, and S. Ohnishi (Springer-Verlag, 1987) Microclusters is a collection of papers presented at the First NEC Symposium on Fundamental Approaches to New Material Phases, held October 20-22, 1986 in Hakone and October 23,1986 in Kawasaki, Japan. The papers have been organized into seven sections: shell model, electronic structure, new experiments, dynamical processes, structural flucruations, larger miaoclusters, and semiconductor Clusters. Of the 37 papers presented, 24 are from Japanese groups; however, the United States and Europe are well represented by seven and six contributions, respectively. In a surprising departure from recent Cluster meetings, 26 contributions emphasize theoretical rather than experimental treatments. These include electronic structure, geometry, and dynamics, the latter a newly emerging aspect of Cluster research. The electronic structure papers describe different ab initio techniques and also model approaches to extract information on cohesion, bonding, and relative stability that can be compared with experimentally determined abundances. A few papers address the important problem of determining adequate potential energy surfaces, which is needed for finding equilibrium geometries and carrying out dynamical calculations. Most of the experimental papers describe gas phase or molecular beam Cluster srudies. Cluster generation techniques described include ion sputtering, laser vaporization, inert gas condensation, and adiabatic nozzle expansion. Results are presented on Clusters of metal and semiconductor atoms, and molecular (van der Waals) Clusters. The experiments described include mass spectral determination of abundances and magic numbers, optical spectra, multiphoton ionization probes of Cluster dynamics, and collisional ionization srudies. A particularly intriguing paper describes structural instability of small metal particles and includes a series of dramatic high resolution electron micrographs showing the time-dependence of the structure of gold Clusters deposited on Si02-covered Si. The study of isolated Clusters of metal and semiconductor Systems is a rapidly advancing field, with several major international meetings held each year. (For example, the week following the Japanese meeting, the International Symposium on the Physics and Chemistry of Small Clusters was held in Richmond, Virginia.) It is difficult for publications requiring a year's preparation to keep up with this fast pace. MRS BULLETIN/JUNE 1988
Yet this is still atimelybook, especially because it provides to the international audience an exposure to Japanese efforts in this area and also fairly up-to-date coverage of theoretical advances in the Cluster field. Reviewers: S.]. Rileyisgroupleader, and]. Jellinekisa member, of the Metal Cluster Chemistry Group, Chemistry Division, Argonne National Laboratory.
Glasses and Glass-Ceramics for Nuclear Waste Management Edited byd Ma. Rincon (Instituto de Ceramica y Vidrio, CSIC, Madrid, Spain, 1987)
This small volume, 212 pag
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