Cross section fluctuations in nuclear scattering are briefly reviewed in order to show the main important features. Then chaotic scattering is introduced by means of a very simple model. It is shown that chaoticity produces the same kind of irregular fluctuations observed in light heavy–ion collisions. The transition from order to chaos allows a new general framework for a deeper understanding ...

Different kinds of waves and instabilities in the F-region ionosphere excited by relative streaming dust beam to background plasma are studied present paper. The dispersion relations different obtained on time scales. It is found from our numerical results that there both a stable upper hybrid wave electron vibration scale ion cyclotron scale. However, chaotic behaviour appears particles due pl...

In this article, we further consider the above system. In particular, we give a sufficient condition under which the above system is Kato chaotic for $eta=0$ and a necessary condition for the above system to be Kato chaotic for $eta=0$. Moreover, it is deduced that for $eta=0$, if $Theta$ is P-chaotic then so is this system, where a continuous map $Theta$ from a compact metric space $Z$ to itse...

the threshold of weak and strong synchronization in a coupled chaotic gaussian map isdemonstrated by using the pyragas’ terminology. however, vieira and lichtenberg have shown that thepyragas’ criteria for weak and strong synchronization cannot be used for all chaotic systems. in this articlewe demonstrated some interesting synchronization behavior of two coupled chaotic systems with some zeroa...

in this work, different types of chaotic 1-manifolds which lie on the chaotic spheres or on a torus are introduced. some types of retractions of the chaotic spheres affect on the 1-chaotic systems, and other types of retractions occur to the geometric manifold but make the 1-chaotic manifold invariant. the existed retractions are discussed through new proved theorems. also we construct diffe...

Vibration wall control is an important active flow technique studied by many researchers. Although current researches have shown that the performance greatly affected frequency and amplitude of vibration wall, mechanism hiding behind phenomena still not clear, due to complex interaction between separation. To reveal walls, we propose a simplified model help us understand forced excitation (from...

Chaotic instability in a vibration phenomenon, known as brake squeal, is investigated including the combined effects of falling friction, sprag-slip and mode coupling. Brake squeal high-pitched noise that occurs sometimes when vehicle decelerated using disc brakes. The equations motion for two dominant coupled modes system reduce to autonomous nonlinear second-order systems. coupling via fricti...