Demystifying the fusion mechanism in heavy-ion collisions: A six-dimensional Langevin dissipative dynamics approach

TL;DR

This paper introduces a six-dimensional Langevin model to analyze heavy-ion fusion, capturing complex dynamics and aligning well with experimental data, thus advancing understanding of fusion mechanisms and aiding superheavy element synthesis.

Contribution

The study develops a comprehensive six-dimensional Langevin framework that models heavy-ion fusion with detailed degrees of freedom, improving upon previous simpler models.

Findings

Excellent agreement with experimental spin distributions.

Accurate reproduction of fusion cross-sections.

Insights into the fusion hindrance mechanism.

Abstract

We present an in-depth investigation of heavy-ion fusion dynamics using a six-dimensional Langevin framework that enables unrestricted motion of the asymmetry parameter. The stochastic formalism naturally incorporates friction effects and energy fluctuations, providing a detailed understanding of the fusion process. The dynamics transition into the overdamped regime, facilitating rapid neck stabilization while effectively capturing the interplay between shape and rotational degrees of freedom. This approach achieves excellent agreement with experimental spin distributions and fusion cross-sections, establishing a robust foundation for forthcoming studies on the synthesis of superheavy elements and the exploration of the enigmatic fusion hindrance mechanism.