Advances In Nuclear Dynamics Proceedings Of The 9th Winter Workshop On Nuclear Dynamics

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.

Proceedings of the 14th Winter Workshop held in Snowbird, Utah, January 31-February 7, 1998

The field of nuclear dynamics has evolved tremendously over the course of the 15 years of this workshop series. The workshop presently spans a very broad range of research interests. These include the development of concepts that will form the foundation of research for the quark-gluon plasma as well as current studies of very hot and dense baryonic matter through the measurement of pions, strange particles, dileptons, baryons and antimatter. The investigation of the decay of extremely hot nuclear systems blossomed with the dramatic observation of multifragmentation of heavy systems and detailed studies of the temporal and spatial extent of the system emitting fragments at a wide range of excitation energies. This also includes a continuing search for the liquid-gas phase transition in nuclear matter. An entirely new field of inquiry has begun with the advent of reaction studies with radioactive beams.This international workshop, attended by theorists and experimentalists from 20 institutions and 6 countries, continues to provide the opportunity for cross-fertilization between researchers involved in the broad range of research in nuclear dynamics as well as stimulating the interaction between experimentalists and theorists. The present status of research in the vigorous field of nuclear dynamics is reviewed.

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.

This conference brought together leading experts on the topic of nuclear dynamics. The focus was on the interaction between experimentalists and theorists. Special attention was given to working out unifying concepts between different energy regimes — from the Coulomb barrier to the ultra-relativistic RHIC domain. The proceedings reflect those efforts.