Time of Fragmentation in Heavy Ion Collisions near the Fermi Energy
DOI:
https://doi.org/10.54691/fse.v2i8.1718Keywords:
Fragmentation Time, Critical Point, Heavy-ion Collision, Fermi EnergyAbstract
We simulated 64Ni + 58Ni collisions at an incident energy of E/A = 40 MeV by using an antisymmetrized molecular dynamics (AMD) model with employing a statistical decay code. The primary fragment yields were analyzed, and a power-law distribution was shown in the mass range 1 A 30. = 2.3 was treated as the signature of the reaction system (64Ni + 58Ni) at the critical point, and suggested that the fragments formed at 55-75 fm/c while the disassembling system at/or near its critical point.
Downloads
References
Wada R, Keutgen T, Hagel K, et al. Reaction dynamics and multifragmentation in Fermi energy heavy ion reactions[J]. Physical Review C, 2004, 69(4): 044610.
Pochodzalla J, Möhlenkamp T, Rubehn T, et al. Probing the nuclear liquid-gas phase transition[J]. Physical Review Letters, 1995, 75(6): 1040.
Siemens, P. Liquid–gas phase transition in nuclear matter. Nature 305, 410–412.
Wada R, Fabris D, Hagel K, et al. Temperatures and excitation energies of hot nuclei in the reactions of 32S+ Ag and 16O+ Ag at 30 MeV/nucleon[J]. Physical Review C, 1989, 39(2): 497.
Wada R, Tezkratt R, Hagel K, et al. Excitation energies and temperatures of hot nuclei produced in the reactions of 63Cu+ 197Au at 35 AMeV[J]. Physical Review C, 1997, 55(1): 227.
Hagel K, Wada R, Cibor J, et al. Light particle probes of expansion and temperature evolution: Coalescence model analyses of heavy ion collisions at 47 AMeV[J]. Physical Review C, 2000, 62(3): 034607.
Wada R, Lin W, Ren P, et al. Experimental liquid-gas phase transition signals and reaction dynamics[J]. Physical Review C, 2019, 99(2): 024616.
Lin W, Ren P, Zheng H, et al. Solidarity of signal of measures for the liquid-gas phase transition in the statistical multifragmentation model[J]. Physical Review C, 2019, 99(5): 054616.
Huang M, Chen Z, Kowalski S, et al. Isobaric yield ratios and the symmetry energy in heavy-ion reactions near the Fermi energy[J]. Physical Review C, 2010, 81(4): 044620.
Huang M, Wada R, Chen Z, et al. Power law behavior of the isotope yield distributions in the multifragmentation regime of heavy ion reactions[J]. Physical Review C, 2010, 82(5): 054602.
Furuta T, Ono A. Relevance of equilibrium in multifragmentation[J]. Physical Review C, 2009, 79(1): 014608.
Ono A, Horiuchi H. Antisymmetrized molecular dynamics of wave packets with stochastic incorporation of the Vlasov equation[J]. Physical Review C-Nuclear Physics, 1996, 53(6): 2958-2972.
Ono A. Antisymmetrized molecular dynamics with quantum branching processes for collisions of heavy nuclei[J]. Physical Review C, 1999, 59(2): 853.
Hudan S, De Souza R T, Ono A. Short timescale behavior of colliding heavy nuclei at intermediate energies[J]. Physical Review C, 2006, 73(5): 054602.
Charity R J, McMahan M A, Wozniak G J, et al. Systematics of complex fragment emission in niobium-induced reactions[J]. Nuclear Physics A, 1988, 483(2): 371-405.
Hauser W, Feshbach H. The inelastic scattering of neutrons[J]. Physical Review, 1952, 87(2): 366.
Bohr N, Wheeler J A. The mechanism of nuclear fission[J]. Physical Review, 1939, 56(5): 426.
BLATT J M, WEIssKOPF V F. Theoretical Nuclear Physics, 4th printing[J]. 1958.
Charity R J, McMahan M A, Wozniak G J, et al. Systematics of complex fragment emission in niobium-induced reactions[J]. Nuclear Physics A, 1988, 483(2): 371-405.
Minich R W, Agarwal S, Bujak A, et al. Critical phenomena in hadronic matter and experimental isotopic yields in high energy proton-nucleus collisions[J]. Physics Letters B, 1982, 118(4-6): 458-460.
Fisher M E. The theory of equilibrium critical phenomena[J]. Reports on Progress in Physics, 1967, 30(2): 615.
Hirsch A S, Bujak A, Finn J E, et al. The description of fragmentation as a critical phenomenon in high energy P-nucleus collisions[J]. Nuclear Physics A, 1984, 418: 267-287.
Downloads
Published
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
How to Cite
