Microscopic Study of Lambpha (α_Λ≡^6_<ΛΛ>He) and Di-α_Λ Cluster States

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概要

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• The internal structure of α_Λ≡^6_<ΛΛ>He is investigated by solving the Λ+Λ+α three-body problem. The harmonic oscillator wave function (0s)^6 with the size parameters for N and Λ being related so as to give the same oscillator constant Ω is found to be a reasonably good approximation. The α_Λ-particle is quite compact as well as an α-particle. On the basis of this (0s)^6 wave function for α_Λ, di-α_Λ cluster states are treated by a fully microscopic generator coordinate method. Energy spectra, reduced-width amplitudes, spectroscopic factors and E2-transition probabilities are calculated. Our prediction given previously is basically justified by the present improved investigation. In detail the present improved α_Λ-wave function and GCM treatment lead to somewhat deeper binding of two α_Λ's in comparison with the previous result obtained by the orthogonality condition model along with the equal-mass approximation (M_Λ =M_N). The di-α_Λ cluster states form a 0^+ 〜6^+ rotational band with its low-spin members (0^+ and 2^+) being safely particle-stable.

• 理論物理学刊行会の論文
• 1982-02-25

著者

• MOTOBA Toshio

  Laboratory of Physics, Osaka Electro-Communication University

• Motoba Toshio

  Laboratory Of Physics Osaka Electro-communication University

• Bando H

  Univ. Tokyo Tanashi

• Bando Hiroharu

  Division Of Mathematical Physics Fukui University

• Ikeda Kiyomi

  Department Of Physics College Of Science And Engineering Nihon University

• BANDO H

  Division of Mathematical Physics, Fukui University

• Bando Hiroharu

  Division Of Mathematical Physics Fukui Universiiy

• BANDO Hiroharu

  Division of Mathematical Physics, Fukui Univeristy

• BANDO Hiroharu

  Division of Mathemaical Physics, Fukui University

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