Table 2: Calculated and observed term energies (in Ryd) for Ni IV. The second column shows the ab initio energies neglecting relativistic effects (no relat.); the third column shows the energies including the effects of mass, velocity, and Darwin relativistic effects (1-B relat.) but without two-body interactions; the fourth column gives the calculated energies allowing for all relativistic effects (2-B rel.); and the fifth column gives the experimental energies from NIST (2000).
Level 3 Present Experiment

No relat. 1-B rel. 2-B rel. NIST (2000)

$\rm 3d^7~^4F$ 0.000000 0.000000 0.000000 0.00000

$\rm 3d^7~^4P$ 0.167744 0.168143 0.167232 0.15664

$\rm 3d^7~^2G$ 0.194507 0.194612 0.194259 0.17473

$\rm 3d^7~^2P$ 0.213619 0.214542 0.215411 0.20805

$\rm 3d^7~^2H$ 0.273222 0.273044 0.273261 0.23661

$\rm 3d^7~^2D$ 0.244796 0.245531 0.248822 0.24255

$\rm 3d^7~^2F$ 0.426665 0.427212 0.427617 0.38753

$\rm 3d^7~^2D$ 0.642415 0.643563 0.645014 0.60678

$\rm 3d^64s~^6D$ 1.050524 1.021174 1.021967 1.00332

$\rm 3d^64s~^4D$ 1.174054 1.144630 1.145408 1.09810

$\rm 3d^64s~^4P$ 1.329187 1.300472 1.301645 1.26161

$\rm 3d^64s~^4H$ 1.323730 1.294378 1.293635 1.26227

$\rm 3d^64s~^4F$ 1.348514 1.319496 1.319164 1.27956

$\rm 3d^64s~^4G$ 1.385653 1.356394 1.357487 1.31596

$\rm 3d^64s~^2P$ 1.401766 1.373031 1.375162 1.31259

$\rm 3d^64s~^2H$ 1.396225 1.366841 1.367147 1.32057

$\rm 3d^64s~^2F$ 1.422926 1.393841 1.393851 1.33768

$\rm 3d^64s~^2G$ 1.458127 1.428833 1.430886 1.37387

$\rm 3d^64s~^4D$ 1.471055 1.441942 1.442994 1.38750

$\rm 3d^64s~^2I$ 1.474509 1.445083 1.445357 1.40451

$\rm 3d^64s~^2G$ 1.490605 1.461311 1.464264 1.41399

$\rm 3d^64s~^2D$ 1.546979 1.517824 1.517252 1.44471

$\rm 3d^64s~^2S$ 1.554798 1.525544 1.528841

$\rm 3d^64s~^2D$ 1.552943 1.524521 1.528960

$\rm 3d^64s~^2F$ 1.647569 1.618736 1.619422 1.55148

$\rm 3d^64p~^6D^o$ 1.612450 1.600081 1.599185 1.59328

$\rm 3d^64s~^4F$ 1.736458 1.707397 1.709217 1.62704

$\rm 3d^64p~^6F^o$ 1.682306 1.669815 1.669569 1.64876

$\rm 3d^64p~^6P^o$ 1.709164 1.696714 1.696861 1.67615

$\rm 3d^64p~^4D^o$ 1.736066 1.723675 1.725165 1.68833

$\rm 3d^64s~^2F$ 1.812385 1.783258 1.784634 1.68428

$\rm 3d^64p~^4F^o$ 1.750378 1.737852 1.738949 1.69828

$\rm 3d^64s~^4P$ 1.734944 1.706121 1.707983

$\rm 3d^64p~^4P^o$ 1.791677 1.779220 1.779713 1.73270

$\rm 3d^64s~^2G$ 1.843564 1.814675 1.816295 1.72906

$\rm 3d^64s~^2P$ 1.812817 1.783908 1.786087

**Table 2:** Calculated and observed term energies (in Ryd) for Ni IV. The second column shows the ab initio energies neglecting relativistic effects (no relat.); the third column shows the energies including the effects of mass, velocity, and Darwin relativistic effects (1-B relat.) but without two-body interactions; the fourth column gives the calculated energies allowing for all relativistic effects (2-B rel.); and the fifth column gives the experimental energies from NIST (2000).
Level	3 Present	Experiment
	No relat.	1-B rel.	2-B rel.	NIST (2000)
$\rm 3d^7~^4F$	0.000000	0.000000	0.000000	0.00000
$\rm 3d^7~^4P$	0.167744	0.168143	0.167232	0.15664
$\rm 3d^7~^2G$	0.194507	0.194612	0.194259	0.17473
$\rm 3d^7~^2P$	0.213619	0.214542	0.215411	0.20805
$\rm 3d^7~^2H$	0.273222	0.273044	0.273261	0.23661
$\rm 3d^7~^2D$	0.244796	0.245531	0.248822	0.24255
$\rm 3d^7~^2F$	0.426665	0.427212	0.427617	0.38753
$\rm 3d^7~^2D$	0.642415	0.643563	0.645014	0.60678
$\rm 3d^64s~^6D$	1.050524	1.021174	1.021967	1.00332
$\rm 3d^64s~^4D$	1.174054	1.144630	1.145408	1.09810
$\rm 3d^64s~^4P$	1.329187	1.300472	1.301645	1.26161
$\rm 3d^64s~^4H$	1.323730	1.294378	1.293635	1.26227
$\rm 3d^64s~^4F$	1.348514	1.319496	1.319164	1.27956
$\rm 3d^64s~^4G$	1.385653	1.356394	1.357487	1.31596
$\rm 3d^64s~^2P$	1.401766	1.373031	1.375162	1.31259
$\rm 3d^64s~^2H$	1.396225	1.366841	1.367147	1.32057
$\rm 3d^64s~^2F$	1.422926	1.393841	1.393851	1.33768
$\rm 3d^64s~^2G$	1.458127	1.428833	1.430886	1.37387
$\rm 3d^64s~^4D$	1.471055	1.441942	1.442994	1.38750
$\rm 3d^64s~^2I$	1.474509	1.445083	1.445357	1.40451
$\rm 3d^64s~^2G$	1.490605	1.461311	1.464264	1.41399
$\rm 3d^64s~^2D$	1.546979	1.517824	1.517252	1.44471
$\rm 3d^64s~^2S$	1.554798	1.525544	1.528841
$\rm 3d^64s~^2D$	1.552943	1.524521	1.528960
$\rm 3d^64s~^2F$	1.647569	1.618736	1.619422	1.55148
$\rm 3d^64p~^6D^o$	1.612450	1.600081	1.599185	1.59328
$\rm 3d^64s~^4F$	1.736458	1.707397	1.709217	1.62704
$\rm 3d^64p~^6F^o$	1.682306	1.669815	1.669569	1.64876
$\rm 3d^64p~^6P^o$	1.709164	1.696714	1.696861	1.67615
$\rm 3d^64p~^4D^o$	1.736066	1.723675	1.725165	1.68833
$\rm 3d^64s~^2F$	1.812385	1.783258	1.784634	1.68428
$\rm 3d^64p~^4F^o$	1.750378	1.737852	1.738949	1.69828
$\rm 3d^64s~^4P$	1.734944	1.706121	1.707983
$\rm 3d^64p~^4P^o$	1.791677	1.779220	1.779713	1.73270
$\rm 3d^64s~^2G$	1.843564	1.814675	1.816295	1.72906
$\rm 3d^64s~^2P$	1.812817	1.783908	1.786087

Source LaTeX | All tables | In the text

	1 Introduction
	2 Atomic data
	3 The Ni IV emission spectra
	4 Conclusions
	References