This triennial (now biennial) meeting brings together physicists, chemists, materials and electronics engineers from universities, research institutions and industry 8who are involved in various studies and applications of electron beam techniques and technologies.

The conference is one of a series which started in 1985 in Varna, which has remained the venue for all subsequent meetings. During the peri od from the First I nternational Conference on EBT there have been great advances in the field of electron beam technologies. The success of the twelve events of this series clearly demonstrated that the scientists and engineers, working in the academia and research and development laboratories of industry continue to make contributions to technology development of community life, based on Knowledge. The content of this Proceeding shows a great scope of activities and a big potential of developed technologies to increase efficiency of industriai fabrication, to create new products and to improve the life standards.

Electron beam technologies celebrate now 50 years from the first machines and industrial technologies based of application of intense electron beams in vacuum. In the Proceedings of Conferences on EBT in Varna, organized during the last 30 years, the history of ides, the basic objectives in our field and the personal success of two-three generations researchers could be traced. As an example of the flexibility of the subject of interest of participation organizations, the progress in the development and optimization of electron beam applications in nanotechnology and biotechnology, investigations and implementation of selective melting for 30 print structures and a group of sophisticated modern surface treatment methods could be pointed out, together with the remarkable conventional topics as beam physics and generation, electron beam welding, electron beam melting and refining, electron beam evaporation and deposition of functional coatings, electron accelerator applications for modification of various materials, thermal treatment and processing of polymers and composites with electron beam; electron and ion lithography, ion implantation; laser technologies; modeling physical processes by interacting intensive electron and ion beams with materials.

This and ali twelve previousc onferences of this series have provided an excellent forum for exchange of results and experience in the development of EB technologies and also were a piace for forging human links and for developing learning and understanding between participants. They are also a piace to search for partners for cooperative program s of work and to make business contacts.