Probing nuclear bubble configuration by the ratio in heavy-ion collisions

Gao-Chan Yong

doi:10.1140/epja/i2016-16118-x

EPJ

Probing nuclear bubble configuration by the $\pi^{-} / \pi^{+}$ ratio in heavy-ion collisions

Gao-Chan Yong^*

Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China

^* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Received: 29 January 2016
Revised: 3 March 2016
Accepted: 7 March 2016
Published online: 2 May 2016

Abstract

It is theoretically and experimentally argued that there may exist bubble or toroid-shaped configurations in some nucleus systems. Based on the isospin-dependent transport model of nucleus-nucleus collisions, here we propose a method to probe the bubble configuration in the nucleus. That is, one could use the value of the $\pi^{-} / \pi^{+}$ ratio especially its kinetic energy distribution in head-on collision at intermediate energies to probe whether there is bubble configuration or not in projectile and target nuclei. Due to different maximum compressions and the effect of symmetry energy, the value of the $\pi^{-} / \pi^{+}$ ratio in the collision of bubble nuclei is evidently larger than that in the collision of normal nuclei.

International School of Cosmic Ray Astrophysics
24th Course: “Particles and the Cosmos”
29 July – 6 August 2026
Erice, Italy

EPJ

Probing nuclear bubble configuration by the ratio in heavy-ion collisions

Conference announcements

Probing nuclear bubble configuration by the $\pi^{-} / \pi^{+}$ ratio in heavy-ion collisions