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Giant dipole emission inN/Z asymmetric heavy-ion reactions

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Il Nuovo Cimento A (1971-1996)

Summary

We have measured the high-energy γ-ray spectra from the fusion reactions 130 MeV16O +98Mo and 240 MeV48Ti +64Ni, populating the114Sn and112Sn compound nuclei at the excitation energy of 110 MeV. The comparison of the spectra shows a ~36% enhancement of the α-ray yield in the Giant Dipole Resonance region (E γ > 8 MeV) when the 16 O-induced reaction is considered. This enhancement is interpreted as due to entrance channel effects related to theN/Z asymmetry between the target and the projectile.

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Authors and Affiliations

  1. INFN, Laboratori Nazionali di Legnaro, Legnaro, Italy

    M. Cinausero, E. Farnea, E. Fioretto, D. R. Napoli & G. Prete

  2. INFN and Dipartimento di Fisica, Università di Firenze, Firenze, Italy

    N. Gelli & F. Lucarelli

  3. INFN and Dipartimento di Fisica, Università di Padova, Padova, Italy

    G. Viesti, D. Bazzacco, D. Fabris, M. Lunardon, G. Nebbia, C. Rossi Alvarez & C. A. Ur

  4. INFN and Dipartimento di Fisica, Università diMilano, Milano, Italy

    P. F. Bortignon

  5. INFN and Dipartimento di Fisica, Università di Napoli, Napoli, Italy

    A. Brondi, G. La Rana & E. Vardaci

  6. INFN and Dipartimento di Fisica, Università di Bari, Bari, Italy

    E. M. Fiore, L. Fiore & V. Paticchio

  7. H. Niewodniczański Institute of Nuclear Physics, Kraków, Poland

    B. Fornal

Authors
  1. M. Cinausero
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  2. N. Gelli
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  3. G. Viesti
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  4. F. Lucarelli
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  5. D. Bazzacco
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  6. P. F. Bortignon
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  7. A. Brondi
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  8. D. Fabris
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  9. E. Farnea
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  10. E. M. Fiore
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  11. L. Fiore
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  12. E. Fioretto
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  13. B. Fornal
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  14. G. La Rana
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  15. M. Lunardon
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  16. D. R. Napoli
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  17. G. Nebbia
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  18. V. Paticchio
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  19. G. Prete
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  20. C. Rossi Alvarez
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  21. C. A. Ur
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  22. E. Vardaci
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Cinausero, M., Gelli, N., Viesti, G. et al. Giant dipole emission inN/Z asymmetric heavy-ion reactions. Il Nuovo Cimento A (1971-1996) 111, 613–619 (1998). https://doi.org/10.1007/BF03185328

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  • DOI: https://doi.org/10.1007/BF03185328

PACS 24.30.Cz

PACS 25.70.Gh

PACS 01.30.Cc

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