Temperature-dependent quantum pair potentials and ionization in Helium-like plasmas

  • H. Rahal
  • C. Deutsch
  • M.M. Gombert

Abstract

Diffraction corrected effective and Coulombic electron-ion interaction are worked out for helium like ionsin plasmas of warm dense matter (WDM) and chemically-reacting concern, through explicit wavefunctions derived within an appropriate quantum defect framework. Very significant departures from theusual and corresponding hydrogenlike expressions are then witnessed. To do so, we strongly rely on acoherent quantum defect model (QDM) making use of parameters qualifying departures from hydrogenicbound states with same quantum numbers for negative energies as well as phase shift corrections forpositive energy levels. Such an approach is also completed with a very accurate Hartree-Fock (HF)approximation for the ground state. The QDM then approaches the Slater sum-over-state- for the binaryelectron-ion where the pertaining ion retains an electron on its 1s hydrogenlike ground state. The resultingelectron-ion effective interactions are then analytically derived through classical pair correlationfunctions. These latter are thoroughly contrasted to their hydrogenlike homologues. In addition,ionizationin a 3-component electron-two ion system is also given a certain attention.
Published
2018-07-16
How to Cite
RAHAL, H.; DEUTSCH, C.; GOMBERT, M.M.. Temperature-dependent quantum pair potentials and ionization in Helium-like plasmas. Physical Sciences and Technology, [S.l.], v. 4, n. 2, p. 29-46, july 2018. ISSN 2409-6121. Available at: <http://phst.kaznu.kz/index.php/journal/article/view/131>. Date accessed: 24 oct. 2018. doi: https://doi.org/10.26577/phst-2017-2-131.
Section
Plasma Physics and Related Technology