Isoscaling of fragments withZ=117from reconstructed quasiprojectiles Academic Article uri icon

abstract

  • In heavy-ion collisions, isoscaling provides a method for studying the evolution of nuclear symmetry energy as a function of excitation energy. One challenge in using isoscaling is to accurately determine the neutron-to-proton ratio (N/Z) of the fragmenting source. Isoscaling results are presented for the reactions of Kr86,78+Ni64,58 at 35 MeV/nucleon taken on the NIMROD-ISiS array at Texas A&M University. The N/Z of the source was calculated from the isotopically identified fragments and experimentally measured neutrons emitted from reconstructed quasiprojectiles. These data exhibit isoscaling for elements with Z=1-17 over a broad range of isotopes. The isoscaling parameter is shown to increase with increasing difference in the neutron composition () of the compared sources. For a selected , the ratio / is also shown to decrease with increasing excitation energy. This may reflect a corresponding decrease in the nuclear symmetry energy. 2009 The American Physical Society.

published proceedings

  • Physical Review C

author list (cited authors)

  • Wuenschel, S., Dienhoffer, R., Souliotis, G. A., Galanopoulos, S., Kohley, Z., Hagel, K., ... Yennello, S. J.

citation count

  • 36

complete list of authors

  • Wuenschel, S||Dienhoffer, R||Souliotis, GA||Galanopoulos, S||Kohley, Z||Hagel, K||Shetty, DV||Huseman, K||May, LW||Soisson, SN||Stein, BC||Caraley, AL||Yennello, SJ

publication date

  • June 2009