Eur. Phys. J. A (2015) 51: 139
https://doi.org/10.1140/epja/i2015-15139-3

Regular Article - Theoretical Physics

On the peak mass production of different fragments in intermediate-energy heavy-ion collisions

Department of Physics, Panjab University, 160 014, Chandigarh, India

^* e-mail: rkpuri@pu.ac.in

Received: 9 June 2015
Revised: 16 October 2015
Accepted: 19 October 2015
Published online: 3 November 2015

Abstract

Using the isospin-dependent quantum molecular dynamics (IQMD) model, we study the system mass dependence of the peak center-of-mass energy () and maximal production () of various mass fragments at their corresponding ). We studied, in particular, light clusters (LCs), medium-mass fragments (MMFs) and heavy-mass fragments (HMFs) produced in various reactions ranging from ⁴⁰ Ca + ⁴⁰ Ca to ¹⁹⁷ Au + ¹⁹⁷ Au. Our findings show that the and increase with the system mass for all mass fragments except for HMFs where the peak center-of-mass energy decreases and corresponding multiplicity remains constant with the system mass. This happens due to the dominant role of Coulomb interactions in heavier colliding nuclei. Experiments are called for to verify this prediction.