Calculations on bound and autoionizing states, and continuum radiative properties for Li − and Na

• Published in: Chemical physics letters Vol. 29; no. 3; pp. 353 - 358
• Main Authors: Stewart, R.F., Laughlin, C., Victor, G.A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.1974
• ISSN: 0009-2614; 1873-4448
• DOI: 10.1016/0009-2614(74)85121-3

Semi-empirical model potential calculations have been performed for bound and continuum properties of Li − and Na −. The calculated electron affinities of the 2s 2 1S state of Li − and the 3s 2 1S and 3p 2 3P e states of Na − are in agreement with the calculations of Norcross and with experimental data. Positions of possible autoionizing states are calculated using projection and root stabilization methods. The Stieltjes imaging method of Langhoff is employed to compute the photodetachment cross sections of Li − and Na − and the results are in excellent agreement with the close-coupling calculations of Moores and Norcross. A comparison of variational and numerical results for the coupled time-dependent Hartree-Fock photoionization of helium shows that good Stieltjes imaging results can be obtained with a very small basis set for the variational calculation. The continuous photoemission profile for the 3p 2 3P e state of Na − is also obtained.