The photoabsorption spectrum that is due to the inner 3d-subshell excitation of atomic arsenic was photographed in the 400–200-Å region, using the flash-pyrolysis technique. With the help of relativistic Hartree–Fock calculations and least-squares fitting programs, 19 lines were ascribed to transitions from the ground state to the 3d94s24p4 configuration and 20 lines to transitions to the 3d94s24p3np (n = 4–8) configurations. Two series limits were estimated as 403 600 cm−1 (50.0 eV) and 410 600 cm−1 (50.9 eV).
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HF Energies EAV for the Center of Gravity of the Ground-State Configuration 3d104s24p3 and the Inner d-Subshell Excited Even Configurations 3d94s24p3np (n = 4–10) of As i
The source of the level values of the 3d104s24p1 configuration is Ref. 1.
The parameters β, T, α1 and α2 were fixed at zero in the iteration process. σ = mean error = [(Experimental value − Calculated value)2/(m − n)]1/2, where m is number of known levels and n is the number of free parameters.
Table 4
Energy-Level Values (cm−1) of the 3d104s24p3 and 3d9(2D)4s24p4 Configurations as As i and Their LS Percentage Compositionsa
Designation
Level
LS Composition
Obs.
Calc.
3d104s24p3
0
−12.8
99% + 1% 2P
10 592.5
10 593.3
96% + 4% 2P
10 914.6
10 945.7
100%
18 186.1
18 169.8
100%
18 647.5
18 646.6
95% + 4% 2D + l% 4S
3d9(2D)4s24p4(3P)4F9/2
326 983
98% + 2% (1D)2G
(3P)4F7/2
328 710
39% + 26% (3P)2F + 19% (3P)4D
(3P)4F5/2
331 932
331 914
60% + 32% (3P)2F + 6% (1D)2F
(3P)4F3/2
334 343
50% + 24% (3P)4D + 21% (3P)2D
(3P)2P1/2
327 766
84% + 6% (3P)4D + 6% (3P)4P
(3P)2P3/2
329 600
329 521
61% + 32% (3P)4P + 3% (3P)4D
(3P)4D7/2
331 119
55% + 43% (3P)4F + 2% (1D)2F
(3P)4D5/2
333 092
72% + 10% (3P)2D + 7% (3P)2F
(3P)4D3/2
337 950
337 755
33% + 21% (3P)4P + 20% (1D)4F
(3P)4D1/2
339 324
89% + 8% (3P)2P + 2% (3P)4P
(3P)4P5/2
331 350
331 325
90% + 5% (3P)2D + 2% (1D)2D
(3P)4P3/2
336 130
336 100
44% + 24% (3P)4D + 17% (3P)4F
(3P)4P1/2
336 130
336 467
90% + 5% (3P)4D + 3% (2P)2P
(1D)2F7/2
334 983
35% + 25% (3P)4D + 19% (3P)2F
(1D)2F5/2
346 500
346 237
48% + 19% (3P)2D + 19% (1D)2D
(1D)2D5/2
338 510
338 856
52% + 21% (3P)2F + 10% (3P)4P
(1D)2D3/2
340 622
340 367
46% + 26% (1D)2P + 12% (3P)2D
(1D)2G9/2
339 237
98% + 2% (3P)4F
(1D)2G7/2
345 965
94% + 4% (1D)2F + 1% (3P)4F
(1D)2F5/2
336 434
336 693
27% + 22% (3P)4F + 20% (1D)2D
(1D)2F7/2
341 714
341 619
54% + 43% (1D)2F + 2% (3P)4P
(3P)2D5/2
342 070
341 834
56% + 22% (1D)2F + 9% (3P)4D
(3P)2D3/2
343 076
343 511
59% + 12% (1D)2D + 10% (1D)2P
(3P)2P1/2
344 986
344 786
50% + 46% (1D)2S + 4% (3P)2P
(3P)2P3/2
348 295
347 970
58% + 34% (1D)2D + 3% (1D)2D
(3P)2S1/2
351 097
351 374
53% + 45% (1D)2P + 1% (3P)4P
(1D)2D5/2
352 647
352 757
85% + 7% (3P)2D + 6% (1D)2D
(1D)2D3/2
358 666
358 681
93% + 5% (1D)2D + 1% (3P)4F
Only the three largest percentages are given. The first one corresponds to the designation assigned to the level. The source of the level values of the 3d104s24p3 configuration is Ref. 1.
HF Energies EAV for the Center of Gravity of the Ground-State Configuration 3d104s24p3 and the Inner d-Subshell Excited Even Configurations 3d94s24p3np (n = 4–10) of As i
The source of the level values of the 3d104s24p1 configuration is Ref. 1.
The parameters β, T, α1 and α2 were fixed at zero in the iteration process. σ = mean error = [(Experimental value − Calculated value)2/(m − n)]1/2, where m is number of known levels and n is the number of free parameters.
Table 4
Energy-Level Values (cm−1) of the 3d104s24p3 and 3d9(2D)4s24p4 Configurations as As i and Their LS Percentage Compositionsa
Designation
Level
LS Composition
Obs.
Calc.
3d104s24p3
0
−12.8
99% + 1% 2P
10 592.5
10 593.3
96% + 4% 2P
10 914.6
10 945.7
100%
18 186.1
18 169.8
100%
18 647.5
18 646.6
95% + 4% 2D + l% 4S
3d9(2D)4s24p4(3P)4F9/2
326 983
98% + 2% (1D)2G
(3P)4F7/2
328 710
39% + 26% (3P)2F + 19% (3P)4D
(3P)4F5/2
331 932
331 914
60% + 32% (3P)2F + 6% (1D)2F
(3P)4F3/2
334 343
50% + 24% (3P)4D + 21% (3P)2D
(3P)2P1/2
327 766
84% + 6% (3P)4D + 6% (3P)4P
(3P)2P3/2
329 600
329 521
61% + 32% (3P)4P + 3% (3P)4D
(3P)4D7/2
331 119
55% + 43% (3P)4F + 2% (1D)2F
(3P)4D5/2
333 092
72% + 10% (3P)2D + 7% (3P)2F
(3P)4D3/2
337 950
337 755
33% + 21% (3P)4P + 20% (1D)4F
(3P)4D1/2
339 324
89% + 8% (3P)2P + 2% (3P)4P
(3P)4P5/2
331 350
331 325
90% + 5% (3P)2D + 2% (1D)2D
(3P)4P3/2
336 130
336 100
44% + 24% (3P)4D + 17% (3P)4F
(3P)4P1/2
336 130
336 467
90% + 5% (3P)4D + 3% (2P)2P
(1D)2F7/2
334 983
35% + 25% (3P)4D + 19% (3P)2F
(1D)2F5/2
346 500
346 237
48% + 19% (3P)2D + 19% (1D)2D
(1D)2D5/2
338 510
338 856
52% + 21% (3P)2F + 10% (3P)4P
(1D)2D3/2
340 622
340 367
46% + 26% (1D)2P + 12% (3P)2D
(1D)2G9/2
339 237
98% + 2% (3P)4F
(1D)2G7/2
345 965
94% + 4% (1D)2F + 1% (3P)4F
(1D)2F5/2
336 434
336 693
27% + 22% (3P)4F + 20% (1D)2D
(1D)2F7/2
341 714
341 619
54% + 43% (1D)2F + 2% (3P)4P
(3P)2D5/2
342 070
341 834
56% + 22% (1D)2F + 9% (3P)4D
(3P)2D3/2
343 076
343 511
59% + 12% (1D)2D + 10% (1D)2P
(3P)2P1/2
344 986
344 786
50% + 46% (1D)2S + 4% (3P)2P
(3P)2P3/2
348 295
347 970
58% + 34% (1D)2D + 3% (1D)2D
(3P)2S1/2
351 097
351 374
53% + 45% (1D)2P + 1% (3P)4P
(1D)2D5/2
352 647
352 757
85% + 7% (3P)2D + 6% (1D)2D
(1D)2D3/2
358 666
358 681
93% + 5% (1D)2D + 1% (3P)4F
Only the three largest percentages are given. The first one corresponds to the designation assigned to the level. The source of the level values of the 3d104s24p3 configuration is Ref. 1.
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