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Interest in the influence of the neutron-to-proton (N/Z) degree of freedom on multi-fragmentation has demanded an improvement in the capabilities of multidetector arrays as well as the particle identification methods. Excellent isotopic identification of particles through a linearization analysis is achieved with various algorithms for calculating the distance between a point and a polynomial function. A new Point-to-Curve method of distance determination is introduced. Descriptions of various methods as well as their performances are presented. [ABSTRACT FROM AUTHOR]

The isoscaling and the isobaric yield ratio methods are here analysed with respect to Statistical Multifragmentation Model predictions, to highlight the effects of the secondary decay on the symmetry energy estimation. [ABSTRACT FROM AUTHOR]

Current advances in technology have enabled dramatic improvements to the performance of multi-detector arrays within the last 10 years. FAUST is a forward array of 68 Si-CsI(Tl) detector telescopes that has been in use since 1996. To take full advantage of current technology, FAUST has undergone an overhaul installing new preamplifiers from Zepto Systems and modifications to allow for Dual-Axis Dual-Lateral position sensitive detectors to be installed. A new calibration software package has also been developed utilizing a novel linearization algorithm. The combination of these upgrades has led to isotopic identification for elements in the Z = 1–13 range and has greatly increased the angular resolution of the array. [ABSTRACT FROM AUTHOR]

In this work, the isoscaling for the 40Ca+112,124Sn reactions at the beam energy of 45 MeV/A was investigated as a function of the excitation energy of reconstructed quasi-projectiles. The excitation energy dependence of the isoscaling parameter obtained from the intra-system isoscaling was investigated and is expected to provide information for the determination of the symmetry energy coefficient of highly excited nuclei. [ABSTRACT FROM AUTHOR]

Interest in the influence of the neutron-to-proton (N/Z) ratio on multifragmenting nuclei has demanded an improvement in the capabilities of multi-detector arrays as well as the companion analysis methods. The particle identification method used in the NIMROD-ISiS 4π array is described. Performance of the detectors and the analysis method are presented for the reaction of 86Kr+64Ni at 35 MeV/u. [ABSTRACT FROM AUTHOR]

The symmetry energy is an important quantity in the equation of state of isospin asymmetric nuclear matter. This currently unknown quantity is key to understanding the structure of systems as diverse as the neutron-rich nuclei and neutron stars. At TAMU, we have carried out studies, aimed at understanding the symmetry energy, in a variety of reactions such as, the multifragmentation of 40Ar, 40Ca + 58Fe, 58Ni and 58Ni, 58Fe + 58Ni, 58Fe reactions at 25 – 53 AMeV, and deep-inelastic reactions of 86Kr + 124,112Sn, 64,58Ni (25 AMeV), 64Ni + 64,58Ni, 112,124Sn, 232Th, 208Pb (25 AMeV) and 136Xe + 64,58Ni, 112,124Sn, 232Th, 197Au (20 AMeV). Here we present an overview of some of the results obtained from these studies. The results are analyzed within the framework of statistical and dynamical models, and have important implications for future experiments using beams of neutron-rich nuclei. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR]

The multifragmentation data of the ISiS Collaboration and the EOS Collaboration are examined. Fisher’s droplet formalism, modified to account for Coulomb energy, is used to determine the critical exponents τ and σ, the surface energy coefficient c[sub 0], the pressure-temperature-density coexistence curve of finite nuclear matter and the location of the critical point. © 2002 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Experimental data from the reaction of an 8.0 GeV/c π[sup -] beam incident on a [sup 197]Au target have been analyzed in order to investigate the breakup time scale for hot residues. Helium spectra supported by a momentum tensor analysis suggest that at large excitation energy, above 3–5 MeV/nucleon, highly excited heavy fragments are separated promptly after the thermalization. A binary fission-like mechanism seems unable to reproduce the data at excitation energies above 3–5 MeV/nucleon. © 2002 American Institute of Physics. [ABSTRACT FROM AUTHOR]