Transition probabilities of Ni II spectral lines measured by laser induced breakdown spectroscopy

Experimental transition probabilities for 48 lines of the transition array 3d84s-3d84p of Ni II have been obtained by laser induced breakdown spectroscopy. A procedure based on the measurement and fitting of curves of growth that avoids the systematic error due to self-absorption has been used. The laser induced plasmas are generated using a Nd:YAG laser from a set of Ni-Cu alloys with different Ni concentrations. A comparison is made of our results with the available experimental and theoretical values.

► We have measured transition probabilities for 48 Ni II lines, 17 for the first time. ► Transition probabilities are determined by laser induced breakdown spectroscopy. ► Self-absorption is avoided using curves of growth and various nickel concentrations. ► The procedure allows the inclusion of lines with a wide range of intensities.