Wang, Yijie and Xiao, Zhigang (2025) Correlation function studies at intermediate energies at CSHINE. Il nuovo cimento C, 48 (1). pp. 1-7. ISSN 1826-9885
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Abstract
The isospin-dependent nuclear equation of state, i.e. symmetry energy Esym(ρ) plays an important role in the study of nuclear physics and astrophysics. In terrestrial lab, heavy-ion reaction provides a unique way to constrain Esym(ρ). So a compact spectrometer for heavy ion experiment (CSHINE) is built and particle correlation functions are measured. The HBT correlation function method is applied as an chronometer to extract the emission timescale and determine the emission order of hydrogen isotopes from the intermediate velocity source formed in 30MeV/u40Ar +197 Au. The proton emission timescale τp ≈ 100 fm/c is extracted by the fit of Koonin-Pratt equation with correlation after burner (CRAB) code. And the dynamic emission order of τp >τd >τt is evidenced via the correlation functions of nonidentical particle pairs, indicating that the neutron rich particles are emitted earlier. Meanwhile, transport model simulations demonstrate that the emission timescale of isospin dependent particles depends on the density slope parameter of the nuclear symmetry energy. And the isospin chronology provides a promising route to study the symmetry energy and isospin relaxation.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 31 Mar 2025 13:41 |
| Last Modified: | 31 Mar 2025 13:41 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23525 |
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