Energy levels and magnetic dipole transition parameters for the Nitrogen isoelectronic sequence

Theoretical calculations of the energy levels and magnetic dipole transition parameters for the 1s22s22p3 and 1s22p5 configurations of Nitrogen isoelectronic sequence with Z=21~30 are performed using multi-congfiguration Dirac-Fock(MCDF) method. Based on the relativistic computational code GRASP2k within the framework of MCDF method, the electron correlations, Breit interaction and QED effects are well treated in detail. The energy levels and line strengths of magnetic dipole transition are obtained and compared with the experimental data available, for which good agreements are achieved and the relative differences are less than 0.114% and 8.43%, respectively. The scaling laws of the fine structure splitting and transition rate are obtained on the isoelectronic sequence and the corresponding physical mechanisms are discussed.Three data files are provided here. (1) The energy levels of 2s22p3 and 2p5 configurations for ScXV ion calculated in a.u., titled Energy levels of 2s22p3 and 2p5 configurations for ScXV ion. The active space models with SD excitation labeled with different notations NSD are shown in the first column and energy levels of seven states from 2s22p3 and 2p5 configurations are shown in others columns. (2) The energy levels of Nitrogen-like ions with Z=21~30 computed with uncertainty, other theoretical results and observed data from National Institute of Standard and Technology(NIST), titled Energy levels of Nitrogen-like ions. The ions are listed in the first column and the results from theoretical methods and NIST named as Ecal, EMCDHF, ERCI and ENIST are given in different rows. (3) The line strength of 19 M1 transitions among all levels of 2s22p3 and 2p5 configurations for Nitrogen-like ions with Z=21~30 and some NIST data of line strength in literature, titled Line strength of M1 transitions for Nitrogen-like ions, in which the numbers with square brackets listed in the table represent the power of 10.