Doubly Excited 1,3Fe States of Two-Electron Atoms under Weakly Coupled Plasma Environment

作     者：S. Dutta J. K. Saha S. Bhattacharyya T. K. Mukherjee 

作者机构：Belgharia Texmaco Estate SchoolBelghariaKolkata 700056India Department of PhysicsNaxula Institute of TechnologyAgarparaKolkata 700109India Department of PhysicsAliah UniversityIIA/27NewtownKolkata 700160India Department of PhysicsAcharya Prafulla Chandra CollegeNew BarrackporeKolkata 700131India 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2019年第71卷第7期

页      面：853-860页

核心收录：

学科分类：08[工学] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Supported under Grant No. EMR/2017/000737 from DST-SERB, Govt. of India, Grant No. 23(Sanc.)/ST/P/S&T/16G-35/2017 from DHESTB, Govt. of West Bengal, India by the DHESTB,Govt.of West Bengal,India under Grant No.249(Sanc.)/ST/P/S&T/16G-26/2017 

主　　题：two-electron atom doubly excited states variational method weakly coupled plasma Hylleraas co-ordinate 

摘      要：Precise energy eigenvalues of metastable bound doubly excited 1,3Fe states originating from 2 pnf(n=4–6)configuration of helium-like ions(Z=2–4)under weakly coupled plasma(WCP)environment have been estimated within the framework of Ritz variational method.The wavefunction is expanded in explicitly correlated Hylleraas type basis set.The screened Coulomb potential is consideredas mimic the WCP environment.The atomic systems tend towards gradual instability and the number of excited metastable bound states reduces with increasing plasma strength.The wavelengths corresponding to 2 pnf(1,3F^e)→2 pnf(1,3Do)(n=4–6;n′=3–6)transitions occurring between doubly excited states of plasma embedded two-electron ions are also reported.