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Properties of superdeformed fission isomers in the cranked relativistic Hartree-Bogoliubov theory .
| Content Provider | Semantic Scholar |
|---|---|
| Copyright Year | 2005 |
| Abstract | Properties of superdeformed fission isomers in the cranked relativistic Hartree-Bogoliubov theory. Abstract.The rotational and deformation properties of superdeformed fission isomers in the A ∼ 240 mass region have been investigated within the framework of the cranked relativistic Hartree-Bogoliubov theory. The dependence of the results of the calculations on the parametrization of the RMF Lagrangian has been studied. The rotational properties are best described by the NL1 force. The region of A ∼ 240 is the first one where the superdeformed (SD) shapes have been discovered experimentally [1] in the fission isomers in 1962. According to the measurements of the moments of inertia and the quadrupole moments they are shape isomers with the deformation much larger than the usual ground state deformation. Despite the fact that during almost 40 years numerous experimental efforts have been made for the study of fission isomers, the experimental data on their properties in some respects is more limited than the one collected in the last 15 years in the regions of superdeformation at high spin such as A ∼ 60, 80, 130, 150 and 190 [2]. Recent advances in the experimental techniques leading to the observation of hyperdeformed (third) minimum [3–5] and vibrational structures in the SD (second) minimum [6–8] revived the interest to this mass region of superdeformation. A number of theoretical investigations has been performed in this mass region studying different properties of fission isomers within the frameworks of the phe-nomenological macroscopic + microscopic method and non-relativistic microscopic theories based on the zero-range Skyrme forces and finite range Gogny forces, see Refs. [9–13] and references therein. Recently, some properties of fission isomers in 226 Ra, 232 Th and 240 Pu have been studied in the relativistic mean field (RMF) theory by the Frankfurt group [14, 15]. These investigations, however, have been performed in the BCS approximation using a schematic treatment of pairing in the constant gap approximation with the pairing parameters adjusted to the experimental data in the first minimum. The present investigation is aimed on a more systematic study of the properties |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://arxiv.org/pdf/nucl-th/0006033v1.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Approximation Arabic numeral 0 Bibliographic Reference Design of experiments Eclipse Requirements Modeling Framework Eighty Experiment Ground state Isomerism Large MMEL1 gene Phenylalanine Quadrupole Schematic Singlet fission |
| Content Type | Text |
| Resource Type | Article |
