arXiv:2210.12105·v1·Nuclear Theory
Collective enhancement in the exciton model
M. R. Mumpower🇺🇸 · D. Nuedecker🇺🇸 · H. Sasaki🇺🇸 · T. Kawano🇺🇸 · A. E. Lovell🇺🇸 · M. W. Herman🇺🇸 · I. Stetcu🇺🇸 · M. Dupuis🇫🇷
Abstract
The pre-equilibrium reaction mechanism is considered in the context of the exciton model. A modification to the one-particle one-hole state density is studied which can be interpreted as a collective enhancement. The magnitude of the collective enhancement is set by simulating the Lawrence Livermore National Laboratory (LLNL) pulsed-spheres neutron-leakage spectra. The impact of the collective enhancement is explored in the context of the highly deformed actinide, 239-Pu. A consequence of this enhancement is the removal of fictitious levels in the Distorted-Wave Born Approximation often used in modern nuclear reaction codes.
Comments: 7 pages, 7 figures. Comments welcome!