Role of the cluster structure of ${}^7$Li in the dynamics of fragment capture

Abstract

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.

6 pages, 4 figures, Accepted for publication in Phys. Letts. B

References in corpus (4)

• Fusion and Direct Reactions of Halo Nuclei at Energies around the Coulomb Barrier
• Relating breakup and incomplete fusion of weakly-bound nuclei through a classical trajectory model with stochastic breakup
• Modelling incomplete fusion dynamics of weakly-bound nuclei at near-barrier energies
• ${}^6$He-triton cluster states in ${}^9$Li

Cited by in corpus (17)

• Systematic study of breakup effects on complete fusion at energies above the Coulomb barrier
• Exploring contributions from incomplete fusion in ${}^{6,7}$Li+${}^{209}$Bi and ${}^{6,7}$Li+${}^{198}$Pt reactions
• Investigation of complete and incomplete fusion in ${}^7$Li+${}^{124}$Sn reaction around Coulomb barrier energies
• Complete and incomplete fusion of ${}^7$Li projectiles on heavy targets
• Systematic study of complete fusion suppression in reactions involving weakly bound nuclei at energies above the Coulomb barrier
• Incomplete fusion analysis of ${}^7$Li-induced reaction on ${}^{93}$Nb within 3-6.5 MeV/nucleon
• Unraveling the reaction mechanism for large alpha production and incomplete fusion in reactions involving weakly bound stable nuclei
• Fusion of Borromean nucleus ${}^9$Be with ${}^{197}$Au target at near barrier energies
• Inclusive breakup calculations in angular momentum basis: application to ${}^7$Li+${}^{58}$Ni
• Search for Jacobi shape transition in A $\sim 30$ nuclei
• Investigation of neutron transfer in ${}^7$Li+${}^{124}$Sn reaction
• Fusion of ${}^7$Li with ${}^{205}$Tl at near barrier energies
• Role of neutron transfer in the reaction mechanism of ${}^9$Be+${}^{169}$Tm, ${}^{181}$Ta, ${}^{187}$Re and ${}^{197}$Au systems
• Semi-classical approaches to heavy-ion reactions: fusion, rainbow, and glory
• Fusion systematics for weakly bound nuclei using neutron flow and collective degrees of freedom
• Derivation of breakup probabilities from experimental elastic backscattering data
• Neutron transfer in ${}^9$Be + ${}^{159}$Tb system