Abstract: Properties of multi-Lambda Ca hypernuclei are studied in the relativistic continuum Hartree-Bogoliubov theory. The binding energy per baryon and the hyperon radius are found to change smoothly with the increasing of hyperon number. An obviously reversed arrangement of hyperonic states 2s_1/2 and 1d_5/2 are found,e.g.,in 50 ⁵⁰_10ΛCa. The predicted drip-line hypernuclei from proton-rich side and constant nucleon number side are respectively ⁴⁰_6ΛCa and ⁶⁶_22ΛCa.

Key words: relativistic continuum Hartree-Bogoliubov theory, multi-Lambda hypernuclei, dripline hypernuclei

摘要： 依据多Λ超核在高能重离子碰撞或天体物理中实现的可能性, 以Ca为例, 用相对论连续谱Hartree-Bogoliubov理论研究了系统的基态性质, 包括每重子结合能、重子均方根半径和超核物质半径 以及单粒子能谱等。研究表明, 随着超子数目的增加, 超核的每重子结合能和超子均方根半径变化趋势平缓, 在⁵⁰_10ΛCa等一些超核内超子2s_1/2和1d_5/2能级排列有明显的反转, 丰质子区和总核子数不变的多Λ钙超核滴线所对应的最大超子数分别为6和22。

关键词: 相对论连续谱Hartree-Bogoliubov理论, 多Λ超核, 滴线超核