Charge density at the nucleus and radial behavior of ground state for lithium-like ions with Z=21 to 30  

作　　者：于伟威 王治文 陈超 蔡娟 张楠 

机构地区：[1]Institute of Atomic and Molecular Physics,Jilin University [2]School of Physics and Electronic Technology,Liaoning Normal University [3]School of Physics,Beijing Institute of Technology

出　　处：《Chinese Physics B》2012年第7期229-234,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 11074102)

摘　　要：By using the full-core plus correlation （FCPC） type wave functions, the accurate charge densities p（0） at the nucleus and the radial expectation values of the ground states for the lithium-like systems with Z =- 21 to 30 are obtained. The determinantal conditions and the electron-nucleus cusp condition are used to calculate the inequalities of the upper and the lower bounds to p（0） with two or more expectation values. These inequalities, derived by Angulo and Dehesa [Phys. Rev. A 44 1516 （1991）], are verified to be also valid for these ions with higher nuclear charge. The present results show that the wave functions used in this paper are satisfactory in the whole configuration space for these ions with higher nuclear charge.By using the full-core plus correlation （FCPC） type wave functions, the accurate charge densities p（0） at the nucleus and the radial expectation values of the ground states for the lithium-like systems with Z =- 21 to 30 are obtained. The determinantal conditions and the electron-nucleus cusp condition are used to calculate the inequalities of the upper and the lower bounds to p（0） with two or more expectation values. These inequalities, derived by Angulo and Dehesa [Phys. Rev. A 44 1516 （1991）], are verified to be also valid for these ions with higher nuclear charge. The present results show that the wave functions used in this paper are satisfactory in the whole configuration space for these ions with higher nuclear charge.

关 键 词：electron density radial expectation values upper and lower bounds full core plus cor- relation method 

分 类 号：O562[理学—原子与分子物理]