BUU dynamics of unbound spherical nuclei

Numerical Solution of Kinetic Equations Through a Spline Expansion Method

“…Indeed, in the test particle method, the numerical noise induced by the finite number of particles may bias some physical aspects of the reaction. 10,29 Moreover, the collision integral appearing in the BUU equation is simulated in a phenomenological way. 10,30,31 Lattice methods for solving the homogeneous part of the equation, such as the one described in Ref.…”

Fluctuations in nuclear fragmentation

“…The models using the one-body distribution function are often limited by the use of mean field interactions and exclude ad hoc mass and energy fluctuations. This deficiency produces a noted absence of fragments [5,6].…”

Liquid drop model and quantum pressure resisting noncompact nuclear geometries

“…Based on the example of a sheet of nuclear matter of infinite lateral dimensions but finite thickness, it is shown that the quantization of states in momentum space, resulting from the confinement of the nucleonic motion in the conjugate geometrical space, generates a strong resistance against such a confinement and generates restoring forces driving the systems toward compact geometries. In the liquid drop model, these quantum effects are implicitly included in the surface energy term, via a choice of interaction parameters, an approximation that has been found valid for compact shapes, but has not yet been scrutinized for exotic shapes.In recent years, noncompact nuclear geometries of bubbles, tori, and sheets have attracted considerable interest 1,2,3,4,5,6,7,8 in the context of nuclear multifragmentation studies. According to the scenarios considered, 2,3,4,5,6,7,8 it has been suggested that nuclear systems may assume transiently exotic shapes, and then undergo a characteristic multifragment decay.…”

“…In the liquid drop model, these quantum effects are implicitly included in the surface energy term, via a choice of interaction parameters, an approximation that has been found valid for compact shapes, but has not yet been scrutinized for exotic shapes.In recent years, noncompact nuclear geometries of bubbles, tori, and sheets have attracted considerable interest 1,2,3,4,5,6,7,8 in the context of nuclear multifragmentation studies. According to the scenarios considered, 2,3,4,5,6,7,8 it has been suggested that nuclear systems may assume transiently exotic shapes, and then undergo a characteristic multifragment decay. One of the prominent cases of noncompact geometries is that of an infinite sheet.…”

“…In recent years, noncompact nuclear geometries of bubbles, tori, and sheets have attracted considerable interest 1,2,3,4,5,6,7,8 in the context of nuclear multifragmentation studies. According to the scenarios considered, 2,3,4,5,6,7,8 it has been suggested that nuclear systems may assume transiently exotic shapes, and then undergo a characteristic multifragment decay. One of the prominent cases of noncompact geometries is that of an infinite sheet.…”