Persistence of odd-even staggering in charged fragment yields from the 112Sn+58Ni collision at 35 MeV/nucleon

TL;DR

This study investigates the persistence of odd-even charge staggering effects in nuclear fragments produced in 112Sn+58Ni collisions at 35 MeV/nucleon, revealing that such effects are prominent in light fragments and persist in peripheral collisions.

Contribution

It provides new insights into the charge distribution patterns and the dependence of odd-even staggering effects on fragment size and collision centrality in nuclear reactions.

Findings

Odd-even staggering is prominent for fragments with Z<16.

Staggering effects decrease with increasing fragment charge.

Effects persist up to Z about 40 in peripheral collisions.

Abstract

Odd-even staggering effects on charge distributions are investigated for fragments produced in semiperipheral and central collisions of 112Sn+58Ni at 35 MeV/nucleon. For fragments with Z<16 one observes a clear overproduction of even charges, which decreases for heavier fragments. In peripheral collisions staggering effects persist up to Z about 40. For light fragments, staggering appears to be substantially independent of the centrality of the collisions, suggesting that it is mainly related to the last few steps in the decay of hot nuclei.