Analytic expressions for the resonating group method (RGM) norm kernel of the nine-quark $\mathrm{NNN}$ system make it possible to examine the role of Pauli effects among quarks. The conclusion is that Pauli effects alone do not account for the central dip in the ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ density, despite the fact that the RGM wave function for the nine-quark $\mathrm{NNN}$ system is dominated (70.3%) by states of [441] and [522] space symmetry and contains only 0.4% of the spatially totally symmetric state.

NUCLEAR STRUCTURE Nine-quark model of ${}_{}{}^3{}_{}{}^{}\mathrm{He}$.

• Received 26 February 1982

DOI:https://doi.org/10.1103/PhysRevC.26.736