He became a professor at the ULB in 1964. He worked on the statistical physics of charged particles (Bălescu-Lenard collision operator) and on the theory of transport of magnetically confined plasmas. Radu Balescu was involved in the European fusion programme for more than 30 years as a scientist and as the head of research unit of the ULB group in the Euratom-Belgian state Association.
In 1964, he became a professor at ULB. His research focused on statistical physics of charged particles (Bălescu-Lenard collision operator) and plasma transport theory for magnetically confined plasmas. Radu Balescu was deeply involved in the European fusion program for over three decades as both a scientist and the head of his group within the ULB unit connected to the Euratom-Belgian state association.