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Aufsatz
{2p_\pi}-{2p_\sigma} crossing in heavy symmetric ion-atom collisions: I. Level structure
(1982)
Ab initio self-consistent DFS calculations are performed for five different symmetric
atomic systems from Ar-Ar to Pb-Pb. The level structure for the {2p_\pi}-{2p_\sigma} crossing as function of the united atomic charge Z_u is studied and interpreted. Manybody effects, spin-orbit splitting, direct relativistic effects as well as indirect relativistic effects are differently important for different Z_u. For the I-I system a comparison with other calculations is given.
Aufsatz
On the chemistry of superheavy elements around Z = 164
(1969)
With a relativistic Hartree-Fock-Slater calculation we determined the most stable configurations of the
elements of the possibly quasistable island around Z = 164. It is found that the expected noble gas at Z = 168 should not occur, but instead the element Z = 164 should have the properties of a noble gas.
Aufsatz
Many-electron relativistic calculation and interpretation of atomic processes in time dependent heavy-ion scattering
(1989)
The time dependence of a heavy-ion-atom collision system is solved via a set of coupled channel equations using energy eigenvalues and matrix elements from a self-consistent field relativistic molecular many-electron Dirac-Fock-Slater calculation. Within this independent particle model we give a full many-particle interpretation by performing a small number of single-particle calculations.
First results for the P(b) curves for the Ne K-hole excitation for the systems F{^8+} - Ne and F{^6+} - Ne as examples are discussed.
Aufsatz
Relativistic Dirac-Fock-Slater program to calculate potential-energy curves for diatomic molecules
(1986)
A LCAO-MO (linear combination of atomic orbitals - molecular orbitals) relativistic Dirac-Fock-Slater program is presented, which allows one to calculate accurate total energies for diatomic molecules.
Numerical atomic Dirac-Fock-Slater wave functions are used as basis functions. All integrations as well as the solution of the Poisson equation are done fully numerical, with a relative accuracy of 10{^-5} - 10{^-6}. The details of the method as well as first results are presented here.
Aufsatz
Chemical and physical properties of superheavy elements
(1976)
A knowledge of the physical and chemical properties of superheavy elements is
expected to be of great value for the detection of these elements, owing to the
need for chemical separation in their isolation and identification. The methods
for predicting their electronic structures, expected trends in their chemical and
physical properties and the results of such predictions for the individual superheavy
elements are reviewed. The periodic table is extended up to element 172.
Aufsatz
X-Ray spectra of superheavy and quasi-superheavy elements
(1973)
We discuss the possibility of identifying superheavy elements from the observation
of their M-shell x-ray spectra, which might occur during the collision of a superheavy element with a heavy target. The same question is discussed for the possible observation of the x-rays from the quasimolecule (quasi-superheavy element) which is formed during such a heavy-ion collision. It is shown that it is very difficult, if not impossible, to determine any information about the interesting quantum electrodynamical effects from ...