From Coulomb excitation cross sections to nonresonant astrophysical rates in three-body systems: The 17 Ne case.

Coulomb and nuclear dissociation of 17Ne on light and heavy targets are studied theoretically. The dipole E1 strength function is determined in a broad energy range including energies of astrophysical interest. Dependence of the strength function on different parameters of the 17 Ne ground-state structure and continuum dynamics is analyzed in a three-body model. The discovered dependence plays an important role for studies of the strength functions for the three-body E1 dissociation and radiative capture. The constraints on the [ s ² ] / [ d ² ] configuration mixing in 17 Ne and on p -wave interaction in the 15 O + p channel are imposed based on experimental data for 17 Ne Coulomb dissociation on heavy target. [ABSTRACT FROM AUTHOR]