TY - JOUR
T1 - A Numerical Study for Dielectronic Recombination Processes in He-Like Argon
AU - H. Zhang, Y. Li, J. Yan & J. Wang
JO - Communications in Computational Physics
VL - 4
SP - 795
EP - 805
PY - 2007
DA - 2007/02
SN - 2
DO - http://doi.org/
UR - https://global-sci.org/intro/article_detail/cicp/7928.html
KW - 
AB - <p style="text-align: justify;"><em>Ab initio</em> calculations of dielectronic recombination (DR) processes from the
ground state 1<em>s</em><sup>2</sup> of He-like argon ion through doubly excited states 1<em>s</em>2<em>snl</em>, 1<em>s</em>2<em>pnl</em>(<em>n</em>=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 <em>n</em>&gt;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<sup>2</sup>eV to 10<sup>6</sup>eV are presented, as well as the DR strengths for all the separate resonances.
Moreover, peculiarities of the DR from doubly excited 1<em>s</em>2<em>s</em>3<em>l </em>&#39; configurations are analyzed and the contributions of two-electron-one-photo (TEOP) radiative transitions to
the DR cross sections are also investigated, such as 1<em>s</em>2<em>s</em><sup>2</sup> → 1<em>s</em><sup>2</sup>2<em>p</em>, due to the strong
configuration interactions. Our theoretical results appear to be in excellent agreement
with the previous and recent experimental measurements.</p>