[en] Dynamical calculations of the fluctuations associated with the collective variables involved in fission are presented without invoking the local harmonic approximation. The calculated mass distribution for compound nucleus-fission and fast fission are qualitatively compared. (orig.)

No abstract available

[en] The author derives hydrodynamical equations of motion from the modified TDHF equation for the density matrix describing heavy ion reactions. (HSI)

[en] It is a frequently quoted statement that the 'QCD has nontrivial vacuum state' which in addition 'changes with temperature'. I illustrate these statements by an effective field theory of the order parameter of the deconfining phase transition. (orig./HSI)

[en] In this note we discuss those processes which lead to simple final states; more specifically we concentrate on two body final states which show up in the exclusive part of the single particle spectrum. (orig./HSI)

[en] The authors calculate the Mott density in nuclear matter using a Skyrme type nucleon-nucleon interaction and approximating the bound state wave functions by a product of Gaussian functions. From this density some different equations of state are derived. Furthermore, it is shown that in a special range of densities Bose-Einstein condensation of α-particles should be possible. (HSI)

[en] The author derives the field equations of the gluon field from the effective Lagrangian derived by S. L. Adler (Phys. Rev. D23 (1981) 2905). (HSI)

[en] We have developed a transport theory on the basis of a one-body theory. This one-body transport theory starts out from a dynamical single-particle basis which incorporates main parts of the coupling in a coherent way. By deriving transport equations for one-body quantities it is possible to avoid the strong-coupling limit with its apparent drawback due to off-shell contributions. As the essential tool in this formulation we apply a suitable time-averaging which replaces the usual statistical assumptions in the derivation of (time-irreversible) transport equations. (orig./HSI)

[en] We have studied the influence of entrance channel effects on the compound nucleus formation of ²⁴⁶Fm at energies near the interaction barrier by using different target-projectile combinations. The main goal of these experiments is to study the interplay between decreasing excitation energy and increasing fissility of the composite system when going from asymmetric to more symmetric target-projectile combinations. (orig./HSI)

[en] In this paper, the trends of emitted light fragments (p, d, t, ³He and α) are studied for colliding systems of ¹⁶O and ²⁰Ne on heavy targets at incident energies of 9, 13 and 20 MeV/nucleon ¹⁶O + Au, 100 and 150 MeV/nucleon ²⁰Ne + Au, 241 and 393 MeV/nucleon ²⁰Ne + Au⁴ and 800 MeV/nucleon ²⁰Ne + Pb. (orig./HSI)