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 1 Energy eigenvalues (-E) for the 2pnf (n = 4-6)1,3Fe states of He for different number of terms N in the basis set with respect to different Debye screening length (D). All quantities are given in a.u.

D N -E lFe 3Fe 2p4f 2p5f 2p6f 2p4f 2p5f 2p6f 100 540 0.503 055 0.492 022 0.486 401 0.503 047 0.492 017 0.486 397 675 0.503 055 0.492 022 0.486 401 0.503 047 0.492 017 0.486 397 50 540 0.476 090 0.466 543 0.462 494 0.476 083 0.466 539 0.462 493 675 0.476 090 0.466 543 0.462 494 0.476 083 0.466 539 0.462 493 20 540 0.406 087 0.405 792 0.405 550 0.406 086 0.405 792 0.405 550 675 0.406 087 0.405 856 0.405 709 0.406 086 0.405 856 0.405 709