The MCDF calculations of n=3-4 transitions in some Al-like ions (Fe(13+)-Ga(18+))

The multiconfiguration Dirac-Fock ( MCDF) method is used to systematically calculate the wavelengths and oscillator strengths for transitions among the levels belong to the 3s(2)3p, 3s(2)3d, 3s(2)4s, 3s(2)4p, 3s3p(2), 3s3d(2), 3s3p3d, 3s3p4d, 3s3d4s, 3s3d4p, 3s3d4d, 3p(3), 3p(2)3d, 3p(2)4s, 3p(2)4p, 3p(2)4d and 3p3d4d configurations of Al- like Fe(13+), Co(14+) and Ni(15+) ions. Good agreement is found between our calculation and the available experimental wavelengths. Then wavelengths and oscillator strengths of the Cu(16+), Zn(17+) and Ga(18+) from n = 3-4 transitions involved in these configurations are extensively reported for the first time. The configuration interactions in the Al- like ions are discussed. In particular, the mixing coefficients and level crossing between the 3s3p3d (4)P(3/2) and 3s3p3d (4)D(3/2) states in Al- like Co and Ni are investigated.