@Article{JAMS-1-3,
author = {},
title = {Modified Atomic Orbital Calculations for $(1s,nl)^3L^{\pi}$ and $_2 (1,0)_n^{±1,3}S^e$ Excited States of He Isoelectronic Sequence},
journal = {Journal of Atomic and Molecular Sciences},
year = {2010},
volume = {1},
number = {3},
pages = {224--242},
abstract = {<p style="text-align: justify;">The singly $(1s,ns)^{3}S^{e}$, $(1s,np)^{3}P^{o}$, $(1s,nd)^{3}D^{e}$ 
excited states and the doubly $_{2}(1,0)_{n}^{+1}S^{e}$ and 
$_{2}(1,0)_{n}^{-3}S^{e}$ $(n\leq10)$ autoionizing states of the helium 
isoelectronic sequence are investigated using Modified Atomic Orbital Theory 
(MAOT). Total energies up to $Z = 10$ and excitation energies with $Z = 2$~$5$ 
are presented and comparison with experimental and theoretical available results 
indicates a good agreement. In addition, the method is applied in the calculation 
of accurate results in very high $Z$ - He isoelectronic sequence with $11\leq Z\leq58$ 
and with $Z = 60,$ 70, 80, 90 and 92 for the $(1s,ns)^{1,3}S^{e}$, $(1s,np)^{1,3}P^{o}$, $(1s,nd)^{1,3}D^{e}$, $_{2}(1,0)_{n}^{+1}S^{e}$ 
and $_{2}(1,0)_{n}^{-3}S^{e}$ $(n\leq7)$ excited states. The results obtained 
for these high $Z$ - He isoelectronic sequence are in good agreement with double 
sums over the complete hydrogen spectrum calculations Ivanov and Safronova.</p>},
issn = {2079-7346},
doi = {https://doi.org/10.4208/jams.042710.051510a},
url = {https://global-sci.com/article/74457/modified-atomic-orbital-calculations-for-1snl3lpi-and-2-10-n13se-excited-states-of-he-isoelectronic-sequence}
}