These proceedings cover the talks delivered by experts and pioneers on various aspects of this field: theory; principles of the techniques; instrumentation; data analysis; data interpretation and state-of-the-art studies. The volume could serve as a texbook for beginners and future workers in this field as well as a reference book for experienced workers. The emphasis is on the educational aspects of the subject but information on the latest progress is also highlighted.

The Fourth International Conference on the Structure of Surfaces provides a forum for the report of new results and less the review of the status of surface structure and the relationship between surface and interface structure and physical or chemical properties of interest. Also within the scope of the meeting are novel experimental and theoretical approaches for the determination of surface and interface structures, computer simulation of dynamic processes and new developments in instrumentation.

These volumes contain 365 of the 505 papers presented at the VUV-11 Conference, held at Rikkyo University, Tokyo, from August 27th to September 1st 1995. The papers are divided into three sections: atomic and molecular spectroscopy, solid state spectroscopy and instrumentation and technological applications. New aspects presented were both quantitative and qualitative improvements in fluorescence spectroscopy and magnetic circular dichroism measurements. The fluorescence data are complementary to those of photoemission in a sense but they appear to open up a new method to analyze the optical excitation and relaxation processes. The application of magnetic circular dichroism has proved to be useful not only in analyzing the electronic structures of magnetic materials but also in practical applications to material engineering as found in experiments combined with photoelectron microscopy. Excellent developments in applications are only found in the field of surface photochemistry, where the technique of etching using VUV light has been appreciably refined. Although the majority of distinctive scientific features in the VUV-11 Conference have been brought about by the application of synchrotron radiation, experiments using a different type of light source appear to have progressed steadily. This is evident in the studies of plasma radiation.

The purpose of this Conference was to discuss the results of recent developments and the future prospect in science and technology of the field. The field has been growing and flourishing, while indicating many problems to be uncovered and solved. The conference was structured to encourage interaction and to stimulate the exchange of ideas to accomplish the above purpose.Key issues and materials related to the Conference were included as follows: • Molecular Assemblies in Solutions; • Fine Particles and Colloidal Dispersions; • Supramolecular Organized Films; • Nanostructural Solid Surfaces; • Industrial Applications and Products.The Conference comprised 2 plenary lectures, 42 invited lectures, 150 oral presentations and 266 poster presentations.

These proceedings are the result of the third international workshop on Desorption Induced by Electronic Transitions, DIET III, which took place on Shelter Island, NY, May. 20-22, 1987. The work contained in this volume is an excellent summary of the current status of the field and should be a valuable reference text for both "seasoned" researchers and newcomers in the field of DIET. Based on the success of the meeting it seems clear that interest and enthusiasm in the field is strong. It is also apparent, from the many lively discussions during the meeting, that many unanswered questions (and controversies) remain to be solved. It was particularly pleasing to see many new participants from new and rapidly advancing fields, ranging from gas phase dynamics to semiconductor processing. The resulting cross-fertilization from these separate but related fields is playing an important role in helping us understand desorption processes at solid surfaces. In general, the topics covered during the course of the workshop over lapped those of both DIET I and DIET II. However, clear advances have been made and in general there is a much more sophisticated understand ing of the physics and chemistry of stimulated desorption. Of particular note in this regard is the gas phase research highlighted in this workshop by the work of Nenner et al. , where new results indicate that in the gas phase, photodissociation can precede or compete strongly with autoion ization and other electronic relaxation pathways.