Ground and low-lying excited states of p-shell nuclei in the K-harmonics method

In the paper an attempt has been made to investigate spectra of lowest excited states of nonmagic nuclei by the K-harmonics method and the dependence of calculational results on the choice of the potential version is evaluated. A particular modification of the K-harmonic method is used for calculation, which allows applying a well-developed mathematical mechanism of the shell model to calculating the spectra of arbitrary-nuclei levels. The necessary calculations of binding energy, wave functions and of root-mean-square radii of the p shell nuclei are performed for different versions of the nucleon-nucleon potential. The results of calculating the binding energy of the p shell nuclei are shown and compared with the results of calculations by the shell model and also with experimental values of the binding energy for corresponding nuclei. The results obtained allow one to draw a conclusion that the relative position of levels in spectra is less sensitive to the choice of the potential parameters, than the absolute value of the binding energy is. Similar conclusions can be drawn from the results of calculating the spectra of the lowest states in a 7Li nucleus. The sequence of levels and their relative positions are represented for different versions of the nucleon-nucleon potential