Investigation of the nuclear phase transition using the Landau free-energy approach

Liquid–Gas phase transition in nuclei

“…A new signature of first order phase transition was experimentally investigated using the Landau free-energy approach [256]. Quasi-projectiles formed in 35 MeV per nucleon 70 Zn + 70 Zn, 64 Zn + 64 Zn and 64 Ni + 64 Ni were reconstructed and data sorted in quasi-projectile asymmetry (m s = (N s − Z s )/A s ) and excitation energy bins in the range 3 -9 MeV per nucleon.…”

“…In presence of H, which arises when the quasi-projectile is asymmetric in the composition (m s ), the symmetry is violated. More details can be found in [256]. In Fig.…”

A 4π Detector Array, NIMROD-ISIS

“…The nuclear liquid-gas phase transition was studied in the frame work of the Landau free energy ap- [33]. Experimentally the free energy is extracted from the isotope yield ratios.…”

Competition between fermions and bosons in nuclear matter at low densities and finite temperatures

“…Events were then sorted in 8 QP excitation energy bins, 1 MeV/A wide, ranging from 2.5 to 9.5 MeV/A. Recently, we have analyzed fragment yield data to investigate the nuclear phase transition using the Landau free energy technique [26][27][28][29]. This approach is based on the assumption that, in the vicinity of the critical point, the fragment free energy per nucleon (F A ) relative to the system temperature (T ) can be expanded in a power series in the fragment's neutron-proton asymmetry m as…”

“…where a p /T is the slope and ln(y 0 ) the intercept, and it is discussed in more details in Refs. [28,29,33]. The quantity δ=-1, 0 and +1 for odd-odd, odd-even and eveneven fragments, respectively; the term Π=δ/A 3/2 to be the order parameter in Landau's description and plays the same role as the order parameter m for the free energy.…”