B. Asher, S. Almaraz-Calderon, V. Tripathi, K. Kemper, L. Baby, N. Gerken, E. Lopez-Saavedra, A. Morelock, J. Perello, I. Wiedenhöver, N. Keeley
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Experimental study of the
F17+C12
fusion reaction and its implications for fusion of proton-halo systems
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.
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