论文标题
从$^{11} $搜索删除β删除的质子排放
Search for beta-delayed proton emission from $^{11}$Be
论文作者
论文摘要
我们报告了尝试从$^{11} $延迟质子排放的$β^ - $ - 通过检测最终状态核$^{10} $与加速器质谱法的观察。在不同的分离器设置的CERN的Isolde设施中收集了十二个样品，从而可以对不同的污染源进行测试。观察到的$^{10} $的$是每个收集的$^{11} $是几个污染源，但在内部不同意。离子源中Beh分子离子的形成可以解释我们的数据，在这种情况下，可以得出$β$ p分支比例为$ 2.2 \ cdot 10^{ - 6} $的上限。
We report on an attempt to reproduce the observation of $β^-$-delayed proton emission from $^{11}$Be through detection of the final state nucleus $^{10}$Be with accelerator mass spectrometry. Twelve samples were collected at the ISOLDE facility at CERN at different separator settings, allowing tests of different sources of contamination to be carried out. The observed amounts of $^{10}$Be per collected $^{11}$Be rule out several contamination sources, but do not agree internally. Formation of BeH molecular ions in the ion source may explain our data, in which case an upper limit of the $β$p branching ratio of $2.2 \cdot 10^{-6}$ can be derived.
