Abstract
A collective Hamiltonian has been set up for 18O. The collective potential energy is obtained as a sum of the liquid-drop energy and shell-correction terms. The liquid-drop energy is computed assuming an ellipsoidal shape for the nucleus and using Pal's exact expressions for the surface, curvature and Coulomb integrals. The shell-correction energy is obtained following Strutinsky's prescription. The kinetic energy parameters are computed microscopically. The moment of inertia is calculated using cranking model formula and also by the Nilsson-Priors expression including the pairing effect. The vibrational mass parameter is calculated using the derivation of Pal et al. which takes into account the RPA effect. Finally, an approximation that incorporates the rotation-vibration coupling is used to solve the collective Schrödinger equation. The ground-state band and the binding energy are well reproduced.
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