Experimental study of the ${}^{17}$F+ ${}^{12}$C fusion reaction and its implications for fusion of proton-halo systems

Abstract

The halo nature of the low-lying $1/2$+ first excited state of the exotic weakly-bound proton drip-line nucleus ${}^{17}$F has long been hypothesized. The structure of such a halo nucleus would imply special nuclear properties including, possibly, an enhancement in its fusion cross section above the barrier. The total fusion cross section of ${}^{17}$F + ${}^{12}$C near the Coulomb barrier was studied using the newly developed "Encore" active-target detector at Florida State University. Total fusion cross sections for the stable counterpart systems ${}^{16}$O + ${}^{12}$C and ${}^{19}$F + ${}^{12}$C were also measured to enable a systematic comparison. No influence of the halo nature of the ${}^{17}$F $1/2$+ first excited state on its fusion excitation function was observed when compared with the stable counterpart systems.

References in corpus (8)

• Quantum Tunneling in Nuclear Fusion
• Fusion and Direct Reactions of Halo Nuclei at Energies around the Coulomb Barrier
• Breakup of ${}^{17}$F on ${}^{208}$Pb near the Coulomb barrier
• The interaction of 11Li with 208Pb
• Study of the astrophysically important ${}^{23}\mathrm{Na}(\mathbf{\alpha },\mathbf{p}{)}^{26}\mathrm{Mg}$ and ${}^{23}\mathrm{Na}(\mathbf{\alpha },\mathbf{n}{)}^{26}\mathrm{Al}$ reactions
• Coulomb excitation of unstable nuclei at intermediate energies
• Strong Multi-step Interference Effects in 12C(d,p) to the 9/2+ State in 13C
• Shielding effects in fusion reactions of proton-halo nucleus

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