Effect of nuclear compressibility on the fragmentation in peripheral Au+Au collisions at 35 AMeV

TL;DR

This study investigates how nuclear compressibility affects fragmentation in gold-gold collisions at 35 AMeV, showing that a soft equation of state better matches experimental data than a hard one.

Contribution

It demonstrates that soft nuclear equations of state more accurately reproduce fragmentation patterns in peripheral heavy-ion collisions compared to hard equations of state.

Findings

Soft EoS reproduces experimental fragment multiplicity decline with impact parameter.

Hard EoS predicts overly explosive fragmentation inconsistent with data.

Soft EoS aligns well with Multics Miniball experimental results.

Abstract

We studied the fragmentation in Au(35 AMeV)+Au collisions at reduced impact parameters in the range b/b_max=0.55 and 0.95 using soft and hard equations of state. The comparison of of QMD simulations at 100 fm/c as a function of reduced impact parameter $b/b_{max}$ with Multics Miniball data showed that soft EoS accurately reproduces the experimental trend of declining fragment multiplicity with impact parameter. The hard EoS on the contrary, seems too explosive to explain the data.