Role of the cluster structure of $^7$Li in the dynamics of fragment capture
| Autor: | Shrivastava, A., Navin, A., Diaz-Torres, A., Nanal, V., Ramachandran, K., Rejmund, M., Bhattacharyya, S., Chatterjee, A., Kailas, S., Lemasson, A., Palit, R., Parkar, V. V., Pillay, R. G., Rout, P. C., Sawant, Y. |
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| Rok vydání: | 2012 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.physletb.2012.11.064 |
| Popis: | Exclusive measurements of prompt $\gamma$-rays from the heavy-residues with various light charged particles in the $^7$Li + $^{198}$Pt system, at an energy near the Coulomb barrier (E/$V_b$ $\sim$ 1.6) are reported. Recent dynamic classical trajectory calculations, constrained by the measured fusion, $\alpha$ and $t$ capture cross-sections have been used to explain the excitation energy dependence of the residue cross-sections. These calculations distinctly illustrate a two step process, breakup followed by fusion in case of the capture of $t$ and $\alpha$ clusters; whereas for $^{6}$He + $p$ and $^{5}$He + $d$ configurations, massive transfer is inferred to be the dominant mechanism. The present work clearly demonstrates the role played by the cluster structures of $^7$Li in understanding the reaction dynamics at energies around the Coulomb barrier. Comment: 6 pages, 4 figures, Accepted for publication in Phys. Letts. B |
| Databáze: | arXiv |
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