Description of 8Be as Deformed Gas-Like Two-Alpha-Particle States

Abstract

In order to study non-zero spin excitations of the recently proposed -cluster condensation in the self-conjugate 4n nuclei, spatial deformation is introduced into the model wave function of the -cluster condensate. The rotational band states of 8 Be are investigated as a first step of a test case for the study of the deformation of the -cluster condensate. Calculations reproduce well the binding energy of the 0 + ground state and also the excitation energy of the 2 + state. Our 0 + wave function is found to be almost exactly equal to the 0 + wave function obtained by the generator coordinate method using Brink's 2 wave function.