摘要
在Pu 的相对论有效原子实势近似和O 原子6311G* 全电子基函数下,用quadratic configurationinteraction of singlely and doublely substitution( QCISD) 方法计算了PuO 分子基态X5Σ- 的MurrellSorbie 解析势能函数和热力学函数,得到Re ,De,Be ,αe ,ωe 和ωeχe 的理论计算值分别为0183 ,73909 eV,03365 ,0001642 ,78115 ,277 cm - 1 .PuO(g) 在标准状况下,生成热力学函数ΔH0 ,ΔS0 ,ΔG0 和Cp 分别为- 11888 kJ/mol,9616 J/mol·K,- 14755kJ/mol,315656 J/mol·K.
The potential energy function for ground state X 5Σ - of the PuO molecule was worked out by the quadratic configuration interaction of single and double substitution method, based on the approximation of relativistic effective core potential for Pu atom and all\|electron 6\|311G\+* basis set for O atom. The calculated results for R e, D e, B e, α e, ω e and ω e χ e are 0 183?nm,7 3909?eV,0 3365,0 001642,781 15,and 2 77?cm -1 ,respectively.In addition,the thermodynamic functions Δ H 0,Δ S 0,Δ G 0 and C p of the PuO(g) in standard state are also calculated,which are -118 88?kJ/mol,96 16?J/mol·K,-147 55?kJ/mol,and 31 5656?J/mol·K,respectively. All these results are in good agreement with the experimental data.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第12期2222-2227,共6页
Acta Physica Sinica
基金
中国工程物理研究院基金