Role of optimal beam energies in the heavy ion fusion reaction H. C. Manjunatha, N. Sowmya, P. S. Damodara Gupta, L. Seenappa and T. Nandi Eur. Phys. J. Plus, 137 6 (2022) 693 Published online: 14 June 2022 DOI: 10.1140/epjp/s13360-022-02677-9