The European Physical Journal A

, 49:63

Fusion of 60Ni + 100Mo near and below the Coulomb barrier

Multi-phonon and transfer couplings down to the hindrance region

Authors

    • Laboratori Nazionali di LegnaroINFN
  • G. Montagnoli
    • Dipartimento di Fisica e AstronomiaUniversità di Padova, and INFN, Sezione di Padova
  • F. Scarlassara
    • Dipartimento di Fisica e AstronomiaUniversità di Padova, and INFN, Sezione di Padova
  • C. L. Jiang
    • Physics DivisionArgonne National Laboratory
  • H. Esbensen
    • Physics DivisionArgonne National Laboratory
  • E. Fioretto
    • Laboratori Nazionali di LegnaroINFN
  • L. Corradi
    • Laboratori Nazionali di LegnaroINFN
  • B. B. Back
    • Physics DivisionArgonne National Laboratory
  • C. M. Deibel
    • Physics DivisionArgonne National Laboratory
    • Department of Physics and AstronomyLouisiana State University
  • B. Di Giovine
    • Physics DivisionArgonne National Laboratory
  • J. P. Greene
    • Physics DivisionArgonne National Laboratory
  • H. D. Henderson
    • Physics DivisionArgonne National Laboratory
  • S. T. Marley
    • Physics DivisionArgonne National Laboratory
    • University of Notre Dame
  • M. Notani
    • University of Notre Dame
    • Fermi National Accelerator Laboratory
  • N. Patel
    • Physics DivisionArgonne National Laboratory
    • Lawrence Livermore National Laboratory
  • K. E. Rehm
    • Physics DivisionArgonne National Laboratory
  • D. Sewerinyak
    • Physics DivisionArgonne National Laboratory
  • X. D. Tang
    • University of Notre Dame
  • C. Ugalde
    • Physics DivisionArgonne National Laboratory
    • University of Chicago
  • S. Zhu
    • Physics DivisionArgonne National Laboratory
Regular Article - Experimental Physics

DOI: 10.1140/epja/i2013-13063-2

Cite this article as:
Stefanini, A.M., Montagnoli, G., Scarlassara, F. et al. Eur. Phys. J. A (2013) 49: 63. doi:10.1140/epja/i2013-13063-2

Abstract

The fusion excitation function of 60Ni + 100Mo has been measured from above the Coulomb barrier down to a cross section around 2 μb, looking for coupling and hindrance effects in this soft medium-mass system with positive Q-values for several neutron transfer channels. A comparison is made with previous results for 64Ni + 100Mo where no Q > 0 transfer channels exist and the hindrance effect is quite clear. The two excitation functions are very similar, as well as the corresponding logarithmic derivatives showing analogous saturations below the barrier. It appears that transfer couplings to Q > 0 channels seem to play a marginal role near and below the barrier for 60Ni + 100Mo , even if measurements of cross sections lower than 1 μb would be needed also for this system. Coupled-channels calculations confirm these observations and indicate that multi-phonon excitations dominate the fusion dynamics in the whole measured energy range.

Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2013