Fig. 7
.
Si IV (
), Ca III (
), Ni III and Ni IV (
), and Zn III (
) lines
![[FIGURE]](img106.gif)
![[FORMULA]](img98.gif)
), Ca III (![[FORMULA]](img100.gif)
), Ni III and Ni IV (![[FORMULA]](img102.gif)
), and Zn III (![[FORMULA]](img104.gif)
) lines