论文标题
$^{11} $ b中接近阈值共振的证据与$β$删除的质子发射$^{11} $相关
Evidence of a near-threshold resonance in $^{11}$B relevant to the $β$-delayed proton emission of $^{11}$Be
论文作者
论文摘要
在$^{11} $ b中直接观察到一个狭窄的接近阈值质子发射共振（ex = 11.4 meV，j $^π$ = 1/2 $ = 1/2 $ = {+} $和$γ_{p} $ = 4.4 keV）通过质子谐振散射。以前是在中子晕核$^{11} $的$β$删除的质子发射中推断出的共鸣。两种实验结果之间的良好一致性都是确认存在这种异国情调衰变的存在以及弱结合的核与连续体耦合的特定行为。 $ r $ -Matrix分析显示，质子和$α$排放渠道的偏衰局宽度相当大。
A narrow near-threshold proton-emitting resonance (Ex = 11.4 MeV, J$^π$ = 1/2$^{+}$ and $Γ_{p}$ = 4.4 keV) was directly observed in $^{11}$B via proton resonance scattering. This resonance was previously inferred in the $β$-delayed proton emission of the neutron halo nucleus $^{11}$Be. The good agreement between both experimental results serves as a ground to confirm the existence of such exotic decay and the particular behavior of weakly bound nuclei coupled to the continuum. $R$-matrix analysis shows a sizable partial decay width for both, proton and $α$ emission channels.
