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Pre-Equilibrium Effects in the Population of Giant Dipole Resonances
Flibotte S., Chomaz P., Colonna M., Cromaz M., Degraaf J. et al
Physical Review Letters 77 (1996) 1448-1451 - http://hal.in2p3.fr/in2p3-00311595
Physique/Physique Nucléaire Expérimentale
Pre-Equilibrium Effects in the Population of Giant Dipole Resonances
S. Flibotte, Ph. Chomaz1, M. Colonna1, M. Cromaz, J. Degraaf, T. E. Drake, A. Galindo-Uribarri, V.P. Janzen, J. Jonkman, S.W. Marshall, S.M. Mullins, J.M. Nieminen, D.C. Radford, J.L. Rodriguez, J.C. Waddington, D. Ward, J. N. Wilson
1 :  GANIL - Grand Accélérateur National d'Ions Lourds
Bvd Henri Becquerel - BP 55027 - 14076 CAEN CEDEX 5
High-energy γ rays associated with the decay of the giant dipole resonance have been measured for two fusion reactions leading to the 140Sm compound nucleus at an excitation energy of 71 MeV. The observed yield increases with the asymmetry in the ratios of the number of neutrons to protons in the entrance channel. This is interpreted as resulting from giant dipole phonons excited at the moment of collision in an N/Z asymmetric reaction.

Articles dans des revues avec comité de lecture
Physical Review Letters (Phys. Rev. Lett.)
Publisher American Physical Society
ISSN 0031-9007 (eISSN : 1079-7114)

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