MCDHF and RCI calculations of energy levels, lifetimes, and transition rates in Si III and Si IV

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Volume 631 (November 2019)

A&A, 631 (2019) A29

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Table A.2.

Observed and computed excitation energies for the 29 lowest states in Si III, from present calculations (E_RCI) and other theoretical results (E_theor).

Level	E_RCI^(a)	E_obs^(b)	E_theor^(c)	E_theor^(d)	ΔE_RCI^(a)	ΔE_theor^(c)	ΔE_theor^(d)
3s² ¹S₀	0	0	0	0	0	0	0
3s3p ³P	52 790	52 725	52 704	51 156	−65	20	1568
3s3p ³P	52 913	52 853	52 835	51 267	−60	18	1586
3s3p ³P	53 164	53 115	53 099	51 491	−49	16	1624
3s3p ¹P	83 031	82 884	83 069	84 060	−147	−185	−1176
3p²¹D₂	122 447	122 215	122 487	120 194	−232	−273	2020
3p²³P₀	129 832	129 708	129 751	128 551	−124	−43	1157
3p²³P₁	129 953	129 842	129 891	128 664	−111	−50	1177
3p²³P₂	130 193	130 101	130 153	128 886	−92	−53	1214
3s3d ³D₃	143 106	142 944	143 640	142 257	−162	−697	686
3s3d ³D₂	143 162	142 946	143 638	142 252	−216	−693	693
3s3d ³D₁	143 208	142 948	143 644	142 249	−260	−696	699
3s4s ³S₁	153 332	153 377	153 881	151 563	45	−504	1814
3p²¹S₀	153 953	153 444	153 855	155 103	−509	−411	−1659
3s4s ¹S₀	159 065	159 070	159 604	159 383	5	−535	−314
3s3d ¹D₂	166 013	165 765	166 490	168 327	−248	−725	−2562
3s4p ³P	175 219	175 230	175 704	174 006	11	−474	1224
3s4p ³P	175 247	175 263	175 743	174 036	16	−480	1227
3s4p ³P	175 312	175 336	175 821	174 102	24	−485	1234
3s4p ¹P	176 503	176 487	176 963	175 288	−16	−476	1199
3p3d ³F	199 259	198 923	199 701		−336	−778
3p3d ³F	199 318	199 026	199 811		−292	−785
3p3d ³F	199 402	199 164	199 955		−238	−791
3s4d ³D₁	201 691	201 598	202 258		−93	−661
3s4d ³D₂	201 666	201 598	202 263		−68	−665
3s4d ³D₃	201 634	201 599	202 265		−35	−666
3s4d ¹D₂	204 464	204 331	205 114		−133	−784
3s4f ¹F	204 795	204 829	205 537		33	−709
3p3d ¹D	205 357	205 029	205 765		−328	−736

Notes. The theoretical results are compared to values from the NIST-database (). ΔE represents the difference between observed and computed energies. All energies are given in cm⁻¹.

References.

^(a)

Present calculations;

^(b)

Kramida et al. (2018);

^(c)

Froese Fischer et al. (2006);

^(d)

Del Zanna et al. (2015).

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