On the Appearance of a Cooper Minimum in the Photoionization Cross Sections of the Plasma-Embedded Li Atom

Table 1

Ground state energy ( in a.u.) and photoelectron energy (ε in a.u.) at Cooper minimum of Li and Na for different Debye screening length (a.u.).

Li			Na
2.0	—	No bound state	2.0	—	No bound state
3.0	0.101097	−0.013282	3.0	0.295830	−0.006226
4.0	0.079121	−0.036019	4.0	0.235561	−0.025245
5.0	0.059276	−0.056043	5.0	0.204692	−0. 043900
6.0	0.042996	−0.072380	6.0	0.183378	−0.059747
7.0	0.029767	−0.085633	7.0	0.167208	−0.072873
8.0	0.018962	−0.096491	8.0	0.154713	−0.083763
9.0	0.009959	−0.105505	9.0	0.144056	−0.092881
10.0	0.002425	−0.113089	10.0	0.135604	−0.100596
11.0	No Min.	−0.119547	20.0	0.093342	−0.140253
20.0	No Min.	−0.178471	50.0	0.064678	−0.168256
100.0	No Min.	−0.188122	100.0	0.054388	−0.178355
200.0	No Min.	−0.193084	200.0	0.049244	−0.183555
	No Min.	−0.198141		0.044099	−0.188857