Fig. 1: Schematic illustrations of α clustering in atomic nuclei.

a 4He=α particle, b 8Be, and c 12C (three possible cases, i, ii, and iii). The green areas represent atomic nuclei allowing some movements of α clusters.

a 4He=α particle, b 8Be, and c 12C (three possible cases, i, ii, and iii). The green areas represent atomic nuclei allowing some movements of α clusters.