论文标题
$^7 $ h地面状态为$^3 $ h+4n共振
$^7$H ground state as a $^3$H+4n resonance
论文作者
论文摘要
我们已经调查了可能存在$^7 $ h共振状态，该状态被认为是一个五体系统，该系统由$^3 $ h核心和四个价中子组成。为此，建立了有效的n-$^3 $ h潜力，以便在$^3 $ h相位移位上复制低能弹性中子散射，并以$^3 $ h-n-n系统的形式重现$^5 $ h共振基态。变分高斯膨胀方法用于求解5体schrödinger方程，而谐振状态参数是通过稳定方法估算的。我们没有发现在$^3 $ h+4n阈值附近的低能能源共振的任何迹象。但是，我们已经在$ e_r \ \ 9 $ MEV上确定了一个非常宽的结构，该结构比该阈值高9 $ MEV，这对应于$^7 $ h j $^π$ = 1/2 $^+$地面状态。在该状态的附近，我们还确定了与$^6 $ h同位素的基态相对应的宽结构，该结构$ j^π= 2^ - $。
We have investigated the possible existence of a $^7$H resonant state, considered as a five-body system consisting of a $^3$H core with four valence neutrons. To this aim, an effective n-$^3$H potential is constructed in order to reproduce the low energy elastic neutron scattering on $^3$H phase shifts and the $^5$H resonant ground state in terms of $^3$H-n-n system. The variational Gaussian Expansion Method is used to solve the 5-body Schrödinger equation, while the resonant state parameters were estimated by means of the stabilization method. We have not found any sign of a narrow low energy resonance in the vicinity of $^3$H+4n threshold. However, we have identified a very broad structure at $E_R\approx 9$ MeV above this threshold, which corresponds to the $^7$H J$^π$=1/2$^+$ ground state. In the vicinity of this state, we have also identified a broad structure corresponding to the ground state of $^6$H isotope with quantum numbers $J^π=2^-$.
