Doubly Excited 1,3Fe States of Two-Electron Atoms under Weakly Coupled Plasma Environment *

S. Dutta,J. K. Saha,S. Bhattacharyya,T. K. Mukherjee

Table 7 Absolute values of the 2praf (1,3Fe) → 2pn’d(1,3 D°) (n = 4-6; n’= 3-6) transition energies (in meV) of plasma embedded Be2+ below the Be3+(2p) threshold under Debye screening.

Debye screening length (D) in a.u. Transition 100 90 80 70 60 50 40 30 20 1Fe → 1D° 2p4f → 2p3d 6948.14 6945.64 6942.18 6937.13 6929.45 6916.18 6894.02 6845.82 6713.53 → 2p4d 309.27 309.91 310.81 312.08 314.03 317.18 322.84 334.38 364.21 → 2p5d* 2649.02 2644.54 2638.32 2629.38 2615.82 2593.85 → 2p6d* 4217.37 4208.40 4196.01 4178.25 4151.41 2p5f — 2p3d 9746.64 9740.19 9731.29 9718.44 9698.86 9666.27 9609.52 9489.74 9166.80 → 2p4d 3107.77 3104.46 3099.92 3093.38 3083.44 3067.28 3038.34 2978.29 2817.48 —2p5d 149.48 150.02 150.80 151.92 153.59 156.24 —2p6d* 1418.87 1413.85 1406.90 1396.94 1382.00 2p6f — 2p3d 11249.80 11238.81 11223.59 11201.73 11168.58 11114.14 11018.80 10820.54 10294.42 — 2p4d 4610.93 4603.07 4592.22 4576.68 4553.16 4515.14 4447.62 4309.09 3945.09 — 2 p 5 d 1652.63 1648.63 1643.10 1635.21 1623.30 1604.11 — 2p6d 84.29 84.76 85.40 86.35 87.71 3F→ → 3do 2p4f — 2p3d 6267.78 6265.49 6262.34 6257.71 6250.67 6509.08 6218.23 6174.16 6053.13 — 2p4d 68.33 69.63 70.35 72.00 74.54 77.13 86.03 101.20 140.68 —2p5d* 2758.91 2754.21 2747.67 2738.34 2724.12 2705.26 —2p6d* 4274.57 4265.36 4252.62 4234.40 4206.86 2p5f — 2p3d 9064.10 9057.90 9049.27 9036.81 9017.88 8987.00 8931.50 8815.76 8503.97 — 2p4d 2864.65 2862.04 2857.28 2851.10 2841.75 2829.15 2799.30 2742.80 2591.53 — 2 p 5 d 37.41 38.20 39.26 40.76 43.08 46.77 —2p6d* 1478.25 1472.95 1465.69 1455.30 1439.65 2p6f — 2p3d 10565.57 10554.80 10539.88 10518.41 10485.88 10433.15 10339.04 10144.79 9629.79 — 2p4d 4366.12 4358.94 4347.90 4332.71 4309.75 4275.30 4206.84 4071.83 3717.34 — 2 p 5 d 1538.88 1535.10 1529.87 1522.37 1511.08 1492.91 — 2p6d 23.22 23.95 24.93 26.31 28.35