Isoscaling in central Sn+Sn collisions at 270 MeV/u

the SπRIT Collaboration

研究成果: Article査読

1 被引用数 (Scopus)


Experimental information on fragment emissions is important in understanding the dynamics of nuclear collisions and in the development of transport model simulating heavy-ion collisions. The composition of complex fragments emitted in the heavy-ion collisions can be explained by statistical models, which assume that thermal equilibrium is achieved at collision energies below 100 MeV/u. Our new experimental data together with theoretical analyses for light particles from Sn+Sn collisions at 270 MeV/u, suggest that the hypothesis of thermal equilibrium breaks down for particles emitted with high transfer momentum. To inspect the system’s properties in such limit, the scaling features of the yield ratios of particles from two systems, a neutron-rich system of 132Sn + 124Sn and a nearly symmetric system of 108Sn + 112Sn , are examined in the framework of the statistical multifragmentation model and the antisymmetrized molecular dynamics model. The isoscaling from low energy particles agree with both models. However the observed breakdown of isoscaling for particles with high transverse momentum cannot be explained by the antisymmetrized molecular dynamics model.

ジャーナルEuropean Physical Journal A
出版ステータスPublished - 2022 10月

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学


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