Abstract
In the present work we deal with the isovector monopole strength in nuclei. In the first part we calculate the energy positions and eigenfunctions of the isovector monopole state in several N = Z nuclei. We discuss some of the properties of the resulting wave functions. In the second part of the work we treat the isovector monopole strength in nuclei with an excess of neutrons. Expressions for transition probabilities to states with definite isospin T + 1, T and T−1 are derived and estimates of these transitions are given. The importance of the isovector monopole strength in various Coulomb mixing effects is discussed. Using the estimates of the transition matrix elements we calculate some of the effects. These include: isospin mixing in ground states, Coulomb energy shifts and widths of isobaric analog resonances.
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