scientific program:

DEMON´s activity concerns mainly the study of dynamics of nuclear reactions at close to the barrier energies as well as in the Fermi energy domain.

• At low energy, a wide program of measurements has been undertaken which aims to study the time-scale and the dynamics associated with the fusion-fission process by investigating the whole fissility domain from the Businaro-Gallone point up to the super-heavy elements with Z=110.
  More than 50 projectile-target and incident energy combinations have already been used (red points in figure) at SARA in Grenoble, LNS in Catania, K500 at Texas A&M and at the VIVITRON in Strasbourg. Some 30 more combinations are planned at the VIVITRON and at JINR in Dubna (blue points in figure).
  
  

  Beside the determination of the time-scale and of the related dissipation (which is studied in different domains of competition between fusion-fission, evaporation residue formation or fast fission and as a function of entrance and output channel mass asymmetries, shape evolution, excitation energy and angular momentum), particular aspects connected with

  -	the possible influence of the formation time,
  -	the bimodal character of the Thorium isotopes fission,
  -	the influence of the neutron composition of the projectile
  	on the extra-extra-push in asymmetric systems
  	leading to Z=110 are of particular interest.

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• At intermediate energy, two experiments have been performed at GANIL:

  - The experiment E236 aimed to get an answer about the excitation energy sharing between the projectile and the target in the ⁸⁶Kr + ¹⁶⁵Ho at 60 MeV/u. A confirmation of an equipartition has been obtained. The existence of a new prethermalization component which had been observed in previous experiments in the emission of light charged particles by the projectile-like fragment could also been confirmed .
  

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  - The experiment E240 was dedicated to measure the production of heavy residues in ⁴⁰Ar + ¹⁹⁷Au at 60 MeV/u and in particular to determine the maximum of excitation energy or temperature a hot nucleus can sustain without disrupting. The temperatures of the excited nuclei have been deduced from the energy spectra of the coincident neutrons. A temperature as high as 6 MeV has been observed for the most excited heavy partner of the dissipative collisions.
  

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