对超核(6 ΛΛ)He,(9 Λ)Be,(10 ΛΛ)Be和(13 Λ)C基态结构的研究

Study of the GroundState Structure of the Hypernuclei (6 ΛΛ)He,(9 Λ)Be,(10 ΛΛ)Be and (13 Λ)C

用集团模型和少体理论研究超核ΛΛ6He,Λ9Be,Λ1Λ0Be和1Λ3C的基态结合能.采用的α-α势符合低能α-α散射实验,Λ-α势用Λ-N势及α粒子密度分布函数得到的,Λ-Λ势通过拟合Λ1Λ0Be基态结合能的实验值而得到的.尝试在超核ΛΛ6He,Λ9Be,Λ1Λ0Be和1Λ3C中引入Λ5He的结构,计算这四个超核的基态结合能,得到了一些合理的结果.

The ground state binding energies of the hypernuclei 6 ΛΛHe, 9ΛBe, 10 ΛΛBe and 13 ΛC are calculated by the cluster model and the few-body theory. The α-α potertial is obtained by fitting the experimental data of α-α scattering, the Λ-α potential is folded by the Λ-N potential and the distribution function of α-particle density, and the Λ-Λ potential is obtained by fitting the binding energy of 10 ΛΛBe . the 5 ΛHe structure is used to the four hypernuclei 6 ΛΛHe, 9ΛBe, 10 ΛΛBe and 13 ΛC for calculating the ground state binding energies, and the results are reasonable.