Timescale for equilibration ofN/Zgradients in dinuclear systems Academic Article uri icon


  • Equilibration of N/Z in binary breakup of an excited and transiently deformed projectile-like fragment (PLF*), produced in peripheral collisions of 64Zn+27Al, 64Zn, 209Bi at E/A=45 MeV, is examined. The composition of emitted light fragments (3Z6) changes with the decay angle of the PLF*. The most neutron-rich fragments observed are associated with a small rotation angle. A clear target dependence is observed with the largest initial N/Z correlated with the heavy, neutron-rich target. Using the rotation angle as a clock, we deduce that N/Z equilibration persists for times as long as 3-4 zs (1zs=110-21 s =300 fm/c). The rate of N/Z equilibration is found to depend on the initial neutron gradient within the PLF*. 2013 American Physical Society.

published proceedings

  • Physical Review C

altmetric score

  • 0.5

author list (cited authors)

  • Brown, K., Hudan, S., deSouza, R. T., Gauthier, J., Roy, R., Shetty, D. V., Souliotis, G. A., & Yennello, S. J.

citation count

  • 22

complete list of authors

  • Brown, K||Hudan, S||deSouza, RT||Gauthier, J||Roy, R||Shetty, DV||Souliotis, GA||Yennello, SJ

publication date

  • June 2013