PoS(X LASNPA)024 Self-Consistent Quantal Cranking Model for Monopole Excitations in Light Nuclei P. Gulshani 1 NUTECH Services 3313 Fenwick Cres., Mississauga, Ontario, Canada L5L 5N1 matlap@bell.net Abstract We model collective monopole excitations (i.e., 0  excited states) in nuclei as oscillations in the nuclear radius. Assuming a monopole-intrinsic product wavefunction and transforming the many-particle shell-model Schrodinger equation accordingly, we obtained a Schrodinger equation that is a sum of monopole and intrinsic parts and a cross term that couples these parts. To fully account for the coupling between the monopole and intrinsic motions, we have applied a constrained variational method to the monopole-intrinsic Schrodinger equation to resolve it into two coupled time-reversal invariant cranking- type Schrodinger equations, one for the monopole oscillations and another for the intrinsic motion. For a harmonic oscillator mean-field potential, the equations are solved for the cranked parameters including the energy. The monopole frequency is determined from an energy-weight sum rule and the cranked equations. The impact of the monopole constraint on the intrinsic system is also investigated approximately. The excitation energy of the first excited 0  state is calculated and compared with that observed experimentally in the light nuclei. X Latin American Symposium on Nuclear Physics and Applications (X LASNPA) December 1-6 2013, Montevideo, Uruguay 1 Speaker