The 12th International Symposium "Atomic Cluster Collisions" (ISACC) and the Final Conference of the COST Action CA20129 MultIChem were organized jointly under the title "MultIChem-ISACC 2025 Conference".
The MultIChem-ISACC 2025 conference took place on 14-18 July 2025 in Heidelberg, Germany. It was co-organized by Heidelberg University and the MBN Research Center. The conference attracted 75 participants from Europe and worldwide (the United States, Japan, and India).
The ISACC conference series promotes the growth and exchange of scientific information on the structure, dynamics and properties of complex atomic, molecular, cluster, nanoscopic and biological systems studied primarily by means of photonic, electronic and atomic collisions. Particular attention is paid to dynamical phenomena and many-body effects occurring in clusters, nanostructures, molecular and biological systems. These include problems of fusion and fission, fragmentation, collective electron excitations, phase transitions, radiation damage, and many others.
The MultIChem-ISACC 2025 conference covered experimental, theoretical and applied aspects of atomic cluster physics and the topics mentioned above. Particular attention was also given to the use of advanced computational techniques and high-performance computing for studying the above-mentioned phenomena and effects. The links of the ISACC and MultIChem topics to novel and emerging technologies were an important focus of the MultIChem-ISACC 2025 conference.
Finally, the conference provided a platform for discussions on current research, technological challenges and related initiatives within the ISACC and MultIChem topical areas.
Further information about the MultIChem-ISACC 2025 conference can be found on the ISACC conference series web portal. The book of abstracts for the MultIChem-ISACC 2025 conference can be found here.