论文标题
直接测量$^7 $ be（$α，γ$）$^{11} $ c与$νp$ - 过程核合成相关的共振（$α，γ$）
Direct measurement of resonances in $^7$Be($α,γ$)$^{11}$C relevant to $νp$-process nucleosynthesis
论文作者
论文摘要
我们已经对$^7 $ be（$α，γ$）的两个共振进行了第一个直接测量，$^{11} $ c反应使用强烈的放射性$^7 $ Be Beam和Dragon RacioL Eaplator，并具有未知强度的反应。我们报告了1155和1110 KEV共振强度为$ 1.73 \ pm 0.25（stat。）\ pm 0.40（Syst。）$ ev和$ 125 ^{+27} _ { - 25}（stat。）\ pm 15（syst。）$ mev。目前的结果使$^7 $ be（$α，γ$）$^{11} $ c反应速率的不确定性降低至$ \ sim $ \ sim $ 9.4-10.7％，t = 1.5-3 GK，这与核合成相关，这与核心驱动的核心驱动的超胶体collapse-collapse超级novae（$ procs $ -procs-procs）相关。我们发现新的，有限的反应速率对$νp$ - 过程的核合成没有影响。
We have performed the first direct measurement of two resonances of the $^7$Be($α,γ$)$^{11}$C reaction with unknown strengths using an intense radioactive $^7$Be beam and the DRAGON recoil separator. We report on the first measurement of the 1155 and 1110 keV resonance strengths of $1.73 \pm 0.25(stat.) \pm 0.40(syst.)$ eV and $125 ^{+27}_{-25}(stat.) \pm 15(syst.)$ meV, respectively. The present results have reduced the uncertainty in the $^7$Be($α,γ$)$^{11}$C reaction rate to $\sim$ 9.4-10.7% over T = 1.5-3 GK, which is relevant for nucleosynthesis in the neutrino-driven outflows of core-collapse supernovae ($νp$-process). We find no effect of the new, constrained reaction rate on $νp$-process nucleosynthesis.
