Fig. 7: Schematic illustrations of two distinct microscopic cluster models.

a The conventional cluster model of ΦB, in which the inter-cluster variables {Si} are the Jacobi coordinates of {Ri}. b Container picture for 4α + α cluster structure of 20Ne. The β1 is the size variable for the description of 4α and β2 for the description of the relative motion between 4α and α clusters.