Commun. Comput. Phys., 2 (2007), pp. 795-805. A Numerical Study for Dielectronic Recombination Processes in He-Like Argon Hong Zhang 1*, Yueming Li 1, Jun Yan 1, Jianguo Wang 11 The Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, P. R. China. Received 3 May 2006; Accepted (in revised version) 16 November 2006 Available online 15 February 2007 Abstract {\it Ab initio} calculations of dielectronic recombination (DR) processes from the ground state $1s^2$ of He-like argon ion through doubly excited states $1s2snl$, $1s2pnl$ ($n$=2 to 9) of Li-like argon ions are performed using the multi-configuration Hatree-Fock method with relativistic correction. The theoretical method and its corresponding computation will be outlined. For higher doubly excited states with $n>9$, the scaling law is used to extrapolate the Auger and radiative transition rates. The total and state-to-state cross sections with corresponding rate coefficients in the temperature from $10^2$ eV to $10^6$ eV are presented, as well as the DR strengths for all the separate resonances. Moreover, peculiarities of the DR from doubly excited $1s2s3l'$ configurations are analyzed and the contributions of two-electron-one-photo (TEOP) radiative transitions to the DR cross sections are also investigated, such as $1s2s^2\rightarrow 1s^22p$, due to the strong configuration interactions. Our theoretical results appear to be in excellent agreement with the previous and recent experimental measurements. Notice: Undefined variable: ams in /var/www/html/issue/abstract/readabs.php on line 163 PACS: 34.80.Lx Key words: Multi-configuration Hatree-Fock method, dielectronic recombination, TEOP. *Corresponding author. Email: zhang_olek@126.com (H. Zhang), li_yueming@iapcm.ac.cn (Y. Li), yan_jun@iapcm.ac.cn (J. Yan), wang_jianguo@iapcm.ac.cn (J. Wang)