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- W2291209145 abstract "atomic systems from Ar-Ar to Pb-Pb. The level structure for the 2p n-2Pa crossing as function of the united atomic charge Zu is studied and interpreted. Manybody effects, spin-orbit splitting, direct relativistic effects as weIl as indirect relativistic effects are differently important for different Zu. For the I-I system a comparison with other calculations is given. J. Introduction Briggs and Macek [lJ recognized the dominant role of the 2 Ptt - 2 Pa rotational coupling for the K -shell vacancy production during heavy ion coIlisions. La ter a scaling law for the excitation probability due to this coupling was proposed [2-4J. The excitation probability is usually obtained in the semi-classical approximation by integration of the coupled differ ential equations for the complex amplitudes along a prescribed colliding trajectory R(t) between the two nuclei. U nfortunately, the scaling law yields reason able results only for the light systems with nuclear charges Z 1 , Z 2 :$ 20. F or heavier systems, many body effects, spin-orbit splitting and other relativistic ef feets, which will be discussed in part IV, lead to discrepancies with the assumed energy difference in the scaling law of LJE(R) ' R 2 between the 2 P; and 2Pa levels at small internuclear distances. In ad dition the change in the wavefunctions due to the relativistic parts of the Hamiltonian will change the behaviour of the scaled coupling matrix elements which then also will affect the excitation probability. Ta explain the observed differences in heavy systems two new attempts [5-6J were made to establish a new scaling law for relativistic systems but again they do not compare weIl with experiment [6, 7J. We try to investigate these discrepancies in two steps. In this paper we calculate good correlation diagrams using a sophisticated Dirac-Fock-Slater" @default.
- W2291209145 created "2016-06-24" @default.
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- W2291209145 date "1982-01-01" @default.
- W2291209145 modified "2023-09-27" @default.
- W2291209145 title "2 P1t - 2 p Crossing in Heavy Symmetrie Ion-Atom Collisions" @default.
- W2291209145 hasPublicationYear "1982" @default.
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