类铍离子的自电离态

AUTOIONIZATION STATES ~1P^0 AND ~1S^e OF THE BERYLLIUM-LIKE IONS

类铍子BeⅠ到OV的自电离态单重P态和单重S态在n=2到n=3能量域的几个最低的能级位置是利用多组态耦合的方法计算了的。并且利用Feshbach投影算符对类铍离子自电离态进行了理论分析。对于能够找到的实验测量、我们的计算与实验一致。

The compound-atom states for beryllium-like ions are analysed with Feshbach projection operators. The projection operators are only applied to two excited electrons. The 1s orbital is optimized for 1s2 1S configuration of the Helium-like ions. The 2s and 2p orbitals are optimized for (1s22s)2S and (1s22p) 2P configuration of the Lithium-like ions respectively. The fixed-core approximation is used. The energies obtained in this work for the autoionized states 1P0 of BeI agree with experimental data by Esteva et al(4). The results obtained by Lendel et al gave 19.68eV state taken the place of (3s6p) 1P0 given bg Esteva et al., but our calculation can not discover the 19.68eV state. The energies for the autoionized states 1P0 from BII to OV and 1S6 from Bel to OV were also given in this work.