Abstract
The fusion excitation function of 60 Ni + 100 Mo 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 64 Ni + 100 Mo 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 60 Ni + 100 Mo , 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.
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References
G. Montagnoli, A.M. Stefanini, EPJ Web of Conferences 17, 05001 (2011).
H. Esbensen, Phys. Rev. C 72, 054607 (2005).
M. Dasgupta, D.J. Hinde, N. Rowley, A.M. Stefanini, Annu. Rev. Nucl. Part. Sci. 48, 401 (1998).
N. Rowley, G.R. Satchler, P.H. Stelson, Phys. Lett. B 254, 25 (1991).
A.M. Stefanini et al., Phys. Rev. Lett. 74, 864 (1995).
K.-H. Schmidt, W. Morawek, Rep. Prog. Phys. 54, 949 (1991).
W. Reisdorf, J. Phys. G: Nucl. Part. Phys. 20, 1297 (1994).
J.G. Keller et al., Nucl. Phys. A 452, 173 (1986).
C.L. Jiang et al., Phys. Rev. Lett. 89, 052701 (2002).
A.M. Stefanini et al., Phys. Rev.C 76, 014610 (2007).
A.M. Stefanini et al., Phys. Rev.C 73, 034606 (2006).
H. Timmers et al., Phys. Lett. B 399, 35 (1997).
H. Timmers et al., Nucl. Phys. A 633, 421 (1998).
Z. Kohley et al., Phys. Rev. Lett. 107, 202701 (2011).
W.S. Freeman et al., Phys. Rev. Lett. 50, 1563 (1983).
K.T. Lesko et al., Phys. Rev. C 34, 2155 (1986).
F.L.H. Wolfs, Phys. Rev. C 36, 1379 (1987).
J.J. Kolata et al., Phys. Rev. C 85, 054603 (2012).
C.L. Jiang et al., Phys. Rev. C 71, 044613 (2005).
C.L. Jiang et al., Phys. Rev. C 81, 024611 (2010).
F. Scarlassara et al., EPJ Web of Conferences 17, 05002 (2011).
C.L. Jiang, H. Esbensen, B.B. Back, R.V.F. Janssens, K.E. Rehm, Phys. Rev. C 69, 014604 (2004).
C.N. Davids, J.D. Larson, Nucl. Instrum. Methods Phys. Res. B 40/41, 1224 (1989).
C.N. Davids, B.B. Back, K. Bindra, D.J. Henderson, W. Kutschera, T. Lauritsen, Y. Nagame, P. Sugathan, A.V. Ramayya, W.B. Walters, Nucl. Instrum Methods Phys. Res. B 70, 358 (1992).
C.L. Jiang et al., Nucl. Instrum. Methods Phys. Res. A 554, 500 (2005).
R.O. Sayer, Rev. Phys. Appl. 12, 1543 (1977).
A. Gavron, Phys. Rev. C 21, 230 (1980).
C.L. Jiang, C.N. Davids, ANL Phys. Div. Annual Rep. ANL-95/14 (1995) p. 74 (unpublished).
K.E. Rehm, H. Esbensen, J. Gehring, B. Glagola, D. Henderson, W. Kutschera, M. Paul, F .Soramel, A.H. Wuosmaa, Phys. Lett B 317, 31 (1993).
S. Mişicu, H. Esbensen, Phys. Rev. C 75, 034606 (2007).
Ö. Akyüz, Å. Winther, Nuclear Structure and Heavy-Ion Physics, in Proceedings of the International School of Physics “Enrico Fermi”, Course LXXVII, Varenna, edited by R.A. Broglia, R.A. Ricci (North Holland, Amsterdam, 1981).
G. Montagnoli et al., Phys. Rev. C 85, 024607 (2012).
N. Rowley, K. Hagino, Nucl. Phys. A 834, 110c (2010).
K. Hagino, N. Rowley, A.T. Kruppa, Comput. Phys. Commun. 123, 143 (1999).
H. Esbensen, S. Mişicu, Phys. Rev. C 76, 054609 (2007).
A. Diaz-Torres, D.J. Hinde, M. Dasgupta, G.J. Milburn, J.A. Tostevin, Phys. Rev. 78, 064604 (2008).
T. Ichikawa, K. Hagino, A. Iwamoto, Phys. Rev. Lett. 103, 202701 (2009).
A.M. Stefanini et al., Phys. Rev. C 78, 044607 (2008).
A.M. Stefanini et al., Phys. Lett. B 679, 95 (2009).
S. Raman, C.W. Nestor, Jr., P. Tikkanen, At. Data Nucl. Data Tables 78, 1 (2001).
T. Kibédi, R.H. Spear, At. Data Nucl. Data Tables 80, 35 (2002).
K. Hagino, N. Takigawa, M. Dasgupta, D.J. Hinde, J.R. Leigh, Phys. Rev. Lett. 79, 2014 (1997).
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Stefanini, A.M., Montagnoli, G., Scarlassara, F. et al. Fusion of 60Ni + 100Mo near and below the Coulomb barrier. Eur. Phys. J. A 49, 63 (2013). https://doi.org/10.1140/epja/i2013-13063-2
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DOI: https://doi.org/10.1140/epja/i2013-13063-2