Astronomy & Astrophysics

Table 1: Target levels of Ni XIX, their threshold energies (in Ryd) and lifetimes ( $\tau$ in s). $a\pm b \equiv a \times 10^{{\pm }b}$ .
Table 2: Comparison of energy levels (in Ryd) of Ni XIX.
Table 5: Comparison of oscillator strengths for some transitions of Ni XIX. ( $a\pm b \equiv a \times 10^{{\pm }b}$ ).
Table 6: Comparison of lifetimes ( $\tau$ in ns) for some levels of Ni XIX. $a\pm b \equiv a \times 10^{{\pm }b}$ .