We have investigated the possible existence of a ⁷H resonant state, considered as a five-body system consisting of a ³H core with four valence neutrons. To this aim, an effective n-³H potential is constructed in order to reproduce the low energy elastic neutron scattering on ³H phase shifts and the ⁵H resonant ground state in terms of ³H-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 ³H+4n threshold. However, we have identified a very broad structure at $E_R\approx 9$ MeV above this threshold, which corresponds to the ⁷H J${}^{\pi }=1/2^{+}$ ground state. In the vicinity of this state, we have also identified a broad structure corresponding to the ground state of ⁶H isotope with quantum numbers $J^{\pi }=2^{-}$.

我们已经研究了⁷ H 共振态的可能存在，被认为是由一个³ H 核心和四个价中子组成的五体系统。为此，构建了一个有效的n- ^{3 H 势能，以再现3} H 相移上的低能弹性中子散射和³ H-nn 系统的⁵ H 共振基态。五体薛定谔方程采用变分高斯展开法求解，谐振状态参数采用稳定法估计。^我们在3附近没有发现任何狭窄的低能量共振的迹象H+4n 阈值。然而，我们已经确定了一个非常广泛的结构${乙}_R\approx 9$MeV 高于此阈值，对应于⁷ H J${}^{\pi }=1/2^{+}$基态。在该状态附近，我们还确定了对应于具有量子数的^{6 H同位素的基态的宽结构}${Ĵ}^{\pi }=2^{-}$.