Year: 2021
Type: conference-paper
Abstract: Recent developments, both in theoretical modeling and computational power, have allowed us to make progress on a goal not fully achieved yet in nuclear theory: a microscopic theory of nuclear fission. Even if the complete microscopic description remains a computationally demanding task, the information that can be provided by current calculations can be extremely useful to guide and constrain more phenomenological approaches, which are simpler to implement. First, a microscopic model that describes the real-time dynamics of the fissioning system can justify or rule out some of the approximations. Second, the microscopic approach can be used to obtain trends, e.g., with increasing excitation energy of the fissioning system, or even to compute observables that cannot be otherwise calculated in phenomenological approaches or that can be hindered by the limitations of the method. We briefly present in this contribution the time-dependent superfluid local density approximation (TDSLDA) approach to nuclear fission, approach that has become a very successful theoretical model in many areas of many-body research. The TDSLDA incorporates the effects of the continuum, the dynamics of the pairing field, and the numerical solution is implemented with controlled approximations and negligible numerical errors. The main part of the current contribution will be dedicated to discussing the method, and recent results concerning the fission dynamics. In addition, we present results on the excitation energy sharing between the fragments, which are in agreement with a qualitative conclusions extracted from a limited number of experimental measurements of properties of prompt neutrons.
Source: EPJ Web of Conferences
Authors: Ionel Stetcu, Aurel Bulgac, Shi Jin, Kenneth J. Roche, Nicolas Schunck
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Funders: U.S. Department of Energy, University of Washington, National Energy Research Scientific Computing Center, Partnership for Advanced Computing in Europe AISBL, Centro Svizzero di Calcolo Scientifico, National Supercomputing Centre Singapore, Office of Science, National Nuclear Security Administration, Advanced Scientific Computing Research, Nuclear Physics, Lawrence Livermore National Laboratory, Los Alamos National Laboratory, Pacific Northwest National Laboratory
Awards: G1017065088, G1071216263, G121915436, G122673668, G1279347439, G1286236842, G1356433355, G1414775356, G14554683, G1459272599, G1527848044, G1528409558, G1645119126, G1677143136, G1799333409, G1816284028, G1974706823, G2029232352, G203625172, G2145270357, G217780377, G222768804, G275679244, G2776190829, G2812149348, G2821925151, G2900453181, TEXAS A&M UNIVERSITY
CENTER OF EXCELLENCE IN NUCLEAR TRAINING AND UNIVERSITY BASED RESEARCH (CENTAUR), G2988778103, G3049477530, G3083819904, G3351824818, G365575497, G4094752214, G419881185, G42916606, G4343739756, G4370606643, G4501827968, G4748082740, NUCLEAR THEORY, G498139845, G5076365615, G5296923526, G5375843722, G5685548091, G5738753633, G574795485, G5840121450, G604949671, G6086734019, G613759197, G6410514744, G6563880843, NUCLEAR THEORY, G6911681599, G69709960, NUCLEAR THEORY, G7259778263, G7651947074, G8050555868, G805243471, G816254390, G8163035529, G8269158468, G8326222658, G8437677540, G8770029225, G8779401156, G8906985441, G969889393, G991281326
OpenAlex ID: W2982376698