Exploring the emission barriers in hot nuclei

G. Viesti, V. Rizzi, D. Fabris, M. Lunardon, G. Nebbia, M. Cinausero, E. Fioretto, G. Prete, A. Brondi, G. La Rana, R. Moro, E. Vardaci, M. Aiche, M. M. Aleonard, G. Barreau, D. Boivin, J. N. Scheurer, J. F. Chemin, K. Hagel, J. B. NatowitzR. Wada, S. Courtin, F. Haas, N. Rowley, B. M. Nyakó, J. Gál, J. Molnár

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Abstract

The reactions 30Si + 170Er and 29Si + 170Er have been studied by the particle-γ coincidence method. The first chance α-particle spectrum from the decay of the 200Pb compound nucleus at 80 MeV excitation energy has been obtained by using a subtraction technique. The emission barrier distribution has been extracted from the first chance spectrum, using the second derivative analysis, commonly employed in sub-barrier fusion studies. The comparison with earlier systematics demonstrates that the α-particle emission barriers of the excited systems are lower than those observed in the inverse (capture) reactions on ground state nuclei.

Original languageEnglish
Pages (from-to)165-170
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume521
Issue number3-4
DOIs
Publication statusPublished - Nov 29 2001

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Viesti, G., Rizzi, V., Fabris, D., Lunardon, M., Nebbia, G., Cinausero, M., Fioretto, E., Prete, G., Brondi, A., La Rana, G., Moro, R., Vardaci, E., Aiche, M., Aleonard, M. M., Barreau, G., Boivin, D., Scheurer, J. N., Chemin, J. F., Hagel, K., ... Molnár, J. (2001). Exploring the emission barriers in hot nuclei. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 521(3-4), 165-170. https://doi.org/10.1016/S0370-2693(01)01221-7