Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Physics of Plasmas
5 (1998), S. 3781-3785
ISSN:
1089-7674
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Plasma screening effects on photoionizations from the 1s state of hydrogenic ions in dense weakly plasmas are investigated. The particle interaction potential in weakly coupled plasmas is obtained by the static Debye-Hückel model. The initial bound wave function and energy eigenvalue of the target ion are modified in the Debye-Hückel potential using the Ritz variation method. The final state of the ejected photoelectron is represented by a plane wave solution. The Coulomb correction is considered using the screened Coulomb wave function. The photoionization cross section is obtained the acceleration form of the matrix element in order to investigate the plasma screening effects on the interaction potential. The screening effect is obtained as a function of the Debye length and photon energy. The retardation correction effect is also considered in obtaining the total 1s photoionization cross section in plasmas. The plasma screening effects on the photoionization cross section for the interesting domain of the Debye length, Λ≥10aZ, are found to be less than 10%. It is also found that the plasma screening effect is almost independent of the incident photon energy. © 1998 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.872742
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