Spectator Matter in Collisions of Relativistic Deformed Nuclei - INSPIRE

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Spectator Matter in Collisions of Relativistic Deformed Nuclei

Jul 31, 2023

8 pages

Published in:

Phys.Part.Nucl. 54 (2023) 4, 605-612

Published: Jul 31, 2023

DOI:

10.1134/S1063779623040214

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Abstract: (Springer)

The Abrasion–Ablation Monte Carlo for Colliders (AAMCC) model is used to study the characteristics of spectator matter in central collisions of relativistic

^{238}

U nuclei, which are sensitive to the mutual orientation and the degree of deformation of the colliding nuclei. It is shown that the multiplicity of spectator neutrons and their forward-backward asymmetry substantially depend on the initial mutual orientation of

^{238}

U nuclei, which makes it possible to separate tip-body events with a high forward-backward asymmetry and a maximum multiplicity of spectator neutrons, as well as side-side events with a similar multiplicity, but with a minimal asymmetry. It is found that an increase in the quadrupole deformation parameter

{{\beta }_{2}}

of

^{238}

U nuclei leads to a proportional increase in the multiplicity of spectator neutrons in tip-body events. Thus, the detection of spectator neutrons in collisions of relativistic deformed nuclei in an experiment can be used to study a degree of their deformation and to select collisions of a certain orientation.

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