by frequencies close to the one-nucleon collisional frequency:

$$\omega _{part}=\frac{\pi}{R_0}\cdot\sqrt{\frac{2T}{m}}\approx 0.145\ c/\rm{fm}.$$

The physical motivation for studying the one-nucleon chaotical dynamics in the “nuclear billiard”, ranging the frequencies from the adiabatic to the resonance regime of a nuclear interaction, is explained in some detail in [@felea-09a].

We briefly remind that the process of nuclear multifragmentation can be viewed as a resonance process and that for smaller excitation energies, nuclear evaporation or breakup of a projectile nucleus occurs when the energy is shared between the collective and one-nucleon degrees of freedom.

By using a few types of analyses: sensitive dependence on the initial conditions, single-particle phase space maps, fractal dimensions of Poincare maps and autocorrelation functions, we emphasized that an intermittent route to chaos is observed in the monopole case when increasing the vibrational frequency to $\Omega = 0.1\ c/\rm{fm}$ [@felea-09a]. In the resonance phase of the interaction the onset of chaotical behaviour was found to be earlier than at any other adiabatic oscillations of the Woods-Saxon potential well.

We present here other methods [@schuster-84] promoting the idea that the degree of chaoticity increases when moving from the adiabatic to the resonance regime: analyses of the configuration and kinetic energy spaces, 