ar X iv : n uc l - th / 9 80 20 33 v 2 2 7 M ay 1 99 8 DYNAMICS OF KAONS IN NUCLEAR MATTER

ar X iv : n uc l - th / 9 70 30 47 v 2 2 4 M ay 1 99 7 Analysis of Kaon Production at SIS Energies ∗

We analyse the production and propagation of pions and kaons in heavy-ion reactions from 0.8 – 1.8 A·GeV within a coupled channel transport approach including the kaon production channels BB K. Assuming the hyperon selfenergy to be 2/3 of the nucleon selfenergy we find that all inclusive experimental K + spectra at SIS energies can be reproduced reasonably well without any selfenergies for the ...

ar X iv : n uc l - th / 9 90 50 49 v 2 2 6 M ay 1 99 9 η - and η ′ - meson production in the reaction pn → dM near threshold

ar X iv : n uc l - th / 9 90 50 49 v 1 2 1 M ay 1 99 9 η - and η ′ - meson production in the reaction pn → dM near threshold

ar X iv : n uc l - th / 9 80 50 53 v 1 2 9 M ay 1 99 8 g - factor of a tightly bound electron

We study the hyperfine splitting of an electron in hydrogen-like 209 Bi 82+. It is found that the hfs energy splitting can be explained well by considering the g-factor reduction due to the binding effect of a bound electron. We determine for the first time the experimental value of the magnetic moment of a tightly bound electron.

ar X iv : n uc l - th / 9 80 50 50 v 1 2 7 M ay 1 99 8 Collisional Damping of Nuclear Collective Vibrations in a Non - Markovian Transport Approach ∗

A detailed derivation of the collisional widths of collective vibrations is presented in both quantal and semi-classical frameworks by considering the linearized limits of the extended TDHF and the BUU model with a non-Markovian binary collision term. Damping widths of giant dipole and giant quadrupole excitations are calculated by employing an effective Skyrme force, and the results are compar...