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تسجيل مستخدم جديدExperimental study of the $^{11}text{B}(p,3alpha)gamma$ reaction at $E_p = 0.5-2.7$ MeV
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Our understanding of the low-lying resonance structure in $^{12}$C remains incomplete. We have used the $^{11}text{B}(p,3alpha)gamma$ reaction at proton energies of $E_p=0.5-2.7$ MeV as a selective probe of the excitation region above the $3alpha$ threshold in $^{12}$C. Transitions to individual levels in $^{12}$C were identified by measuring the 3$alpha$ final state with a compact array of charged-particle detectors. Previously identified transitions to narrow levels were confirmed and new transitions to broader levels were observed for the first time. Here, we report cross sections, deduce partial $gamma$-decay widths and discuss the relative importance of direct and resonant capture mechanisms.
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