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Sub-barrier transfer in 16O+ Pb and 32S+ 208Pb and its role in understanding the suppression of fusion.
- Source :
- EPJ Web of Conferences; 2012, Issue 35, preceding p05005-p.2-05005-p.4, 4p
- Publication Year :
- 2012
-
Abstract
- A detailed analysis of the projectile-like fragments detected at backward angles in the reactions <superscript>16</superscript>O, <superscript>32</superscript>S+<superscript>208</superscript>Pb at energies below the fusion barrier is presented. Excitation functions corresponding to nucleon transfer with ΔZ = 1 and ΔZ = 2 were extracted, indicating surprisingly large absolute probabilities at sub-barrier energies. A comparison of 2p transfer probabilities with time-dependent Hartree-Fock calculations suggests strong pairing correlations between the two protons. Excitation energies in the projectile-like fragments up to ~ 15MeV for the <superscript>16</superscript>O and ~ 25MeV for <superscript>32</superscript>S-induced reactions demonstrate the population of highly excited states in the residual nuclei, indicating substantial dissipation of kinetic energy. These highly inelastic (large excitation energies) and complex (correlated few-nucleon transfer) processes may be closely related to the depletion of fusion through tunnelling at sub-barrier energies. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 21016275
- Issue :
- 35
- Database :
- Complementary Index
- Journal :
- EPJ Web of Conferences
- Publication Type :
- Conference
- Accession number :
- 84396696
- Full Text :
- https://doi.org/10.1051/epjconf/20123505005