main results:
|
These experiments had been the
first ones to show the damping of the nucleonic resonances above of the
Delta in the nuclear matter, motivating the international scientific community
to make a great theoretical and experimental effort to understand which
processes could explain such damping, and verify if it is possible to explain
our results only considering the modifications due to the nuclear matter
(Fermi motion, Pauli blocking and resonances propagation in the nucleus).
In particular, the measures for the Uranium nucleus and a phenomenological
model to explain the experimental resulted in my thesis of PhD..
Beyond these important results, these measurements had presented another
unknown result: that the fissility of thorium in intermediate energies
saturates to a corresponding value 80% of that one of the Uranium one in
the same energies. This resulted in a phenomenological model that explains
the results on the basis of a bigger nuclear transparency of thorium in
relation to the Uranium one. Later this model was improved through a microscopical
model that explains the different fissilities through different probabilities
of nucleons clusters formation inside the nucleus. These experiments
had given to me chance to take knowledge with several experimental techniques
and the instrumentation (the hardware and software) used in modern laboratories
of physics, to use different types of common detectors in nuclear and particles
physics (spectrometers of NaI and BGO, PPAD, tagger, lead-glass) and deepen
my knowledge in intermediate energies at the nuclear physics. Our results
still continue today motivating many theoretical and / or experimental
works on these subjects. |
