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arXiv · 2109.09938

$α$-clustering effect on flows of direct photons in heavy-ion collisions

Chen-Zhong Shi·Yu-Gang Ma
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Abstract

In this work, we reconstruct the $γ$-photon energy spectrum which is in good agreement with the experimental data of $^{86}$Kr + $^{12}$C at $E/A$ = 44 MeV in the framework of our modified EQMD model. The directed flow and elliptic flow of free protons and direct photons have been investigated by taking $α$-clustering structure of $^{12}$C into account. Comparing with the free proton, the direct photon flows give a clearer information about early stage of nuclear reaction. Difference of collective flows between different configurations of $^{12}$C is observed in this work. This indicates that collective flows of direct photons are sensitive to the initial configuration, therefore the $γ$ bremsstrahlung process might be taken as an alternative probe to investigate $α$-clustering structure in light nucleus from heavy ion collisions at Fermi-energy region.

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Chen-Zhong Shi, Yu-Gang Ma. 2021-09-21. $α$-clustering effect on flows of direct photons in heavy-ion collisions. https://doi.org/10.1007/s41365-021-00897-9

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