Proceedings of a February 1997 workshop bringing together experimental and theoretical expertise from all areas of the study of nuclear dynamics. Phase transitions in nuclear collisions is a major topic. Other subjects include research at the CERN SPS, nuclear temperature measurement and secondary d

The study of nuclear dynamics is now in one of its most interesting phases. The theory is in the process of establishing an increasingly reliable transport description of heavy ion reactions from the initial violent phase dominated by first collisions to the more thermalized later stages of the reaction. This is true for the low-to-medium energy reactions, where the dynamics is formulated in terms of nucleonic, or in general hadronic, degrees of freedom. And it is also becoming a reality in ultrarelativistic heavy-ion reactions, where partonic elementary degrees of freedom have to be used. Experiments are now able to 'utilize the existing accelerators and multiparticle detec tion systems to conduct unprecedented studies of heavy-ion collisions on an event-by-event basis. In addition, the field anticipates the completion of the construction of the Relativistic Heavy Ion Collider and the proposed upgrade of the National Superconducting Cyclotron Laboratory, promising qualitatively new data for the near future. All of these efforts are basically directed to the exploration of the change the nuclear medium provides for the properties and interactions of individual nucleons and, ultimately, the exploration of the nuclear matter phase diagram. The investigation of this phase dia gram, including all of the interesting phase transitions predicted from theoretical grounds, is the focus of most of the theoretical and experimental investigations of nuclear dynamics conducted today.

th This workshop was the 15 in a series that addresses the subject of the dynamics of nuclear reactions. These workshops are dedicated to the concept that bringing together scientists from diverse areas of nuclear reactions promotes the vibrant exchange of ideas. This workshop hosted presentations from experimentalists and theorists, intermediate energy to ultrarelativistic energies, and final results to recent speculations. Many of these scientists would not normally be exposed to the work done in other subfields. Thus the Winter Workshop on Nuclear Dynamics plays a unique role in information exchange and the stimulation of new ides. The field of nuclear dynamics has a bright future. New accelerators are being planned and completed around the world. New detectors are being constructed. New models and theories are being developed to describe these phenomena. The Winter Workshop on Nuclear Dynamics will continue to promote this lively and compelling field of research. WOLFGANG BAUER AND GARY D. WESTFALL v Previous Workshops The following table contains a list of the dates and locations of the previous Winter Workshops on Nuclear Dynamics as well as the members of the organizing committees. The chairpersons of the conferences are underlined.

th The 13 Winter Workshop on Nuclear Dynamics is the latest installment in a series of workshops that was started in 1978. This series has grown into a tradition, bringing together experimental and theoretical expertise from all areas of the study of nuclear dynamics. As always, the organizers had placed emphasis on the important aspect of cross fertilization between the different energy regimes and wa.ys of viewing a collision of energetic nuclei. This emphasis is reflected in the broad range of topics covered in these proceedings. Phase transitions in nuclear collisions received most of the attention during this workshop, as indicated by the number of contributions on this subject. Many of the questions in connection with these topics remain not settled and will have a huge impact on the physics that can be extracted from experiments at the future Relativistic Heavy Ion Collider. While the experimental program at the AGS is winding down, the NSCL upgrade and RHIC promise a bright future for our field in the USA. In Europe and Asia, major new facilities are under construction as well. The excitement and anticipation in connection with these new opportunities are reflected in these proceedings as well. Wolfgang Bauer Michigan State University Alice Mignerey University of Maryland v PREVIOUS WORKSHOPS The following table contains a list of the dates and locations of the previous Winter Workshops on Nuclear Dynamics as well as the members of the organizing committees. The chairpersons of the conferences are underlined.

This volume provides a survey of recent experimental and theoretical developments in the rapidly expanding field of heavy ion physics. Prominent experts describe the recent advances from the dynamics of dissipative processes around the Coulomb barrier at the low end of the energy scale all the way up to the physics of the quark-gluon plasma.

Each summer, the Theoretical Physics Division of the Canadian Association of Physicists organizes a summer institute of two weeks duration on a current topic in theoretical physics. This volume contains the lectures from the Pacific Summer Institute held at Pearson College on Vancouver Island, B. C. (Canada) from August 23 to September 3, 1982. The Institute was titled "Progress in Nuclear Dynamics: Short-Distance Behavior in the Nucleus". The primary source of funds for the Institute came from NATO through its Advanced Study Institute programme. Significant finan cial support is also gratefully acknowledged from TRIUMF, Simon Fraser University, Natural Sciences and Engineering Research Council of Canada, and Atomic Energy of Canada Ltd. The topic of the school was the role of the substructure of hadrons--quarks and gluons--in nuclear physics. This includes not only the effects which may be observed in specific nuclear states, such as form factors at large momentum transfer, or the presence of hidden color components in the ground states of few nucleon systems, but also effects which may be observed in the nuclear matter contin uum: the phase transition from normal nuclear matter to a plasma of quarks and gluons. The current status of the long distance phenom enology of the nucleus--the interacting boson approximation and the role of n's and ~'s in nuclear structure, is also reviewed.

This volume is the proceedings of the 14th Winter Workshop on Nuclear Dynamics, held in 1998. The book covers a large range in energy of nuclear collision with special emphasis on nuclear multifragmentation and nuclear collisions at AGS and CERN energies. Many experts in the field have made very good contributions.