fp shell spectroscopy: numerical calculations and theoretical aspects
Description
The fp shell spectroscopy is reviewed and the fsup(n) model is introduced. It is shown that the two-body Hamiltonian monopolar terms play a very important part in the behavior of these spectra, and that realistic interactions do not reproduce them. The detailed study of the following nuclei was undertaken: 47Ca, 48Ca, 49Ca, 56Ni, 48Sc, 50Sc, 50Ti, 46Ti, 50Cr, 47V and 49Cr. It is shown that very precise values of the few parameters defining the monopolar contributions could be extracted from the comparison between calculations and experimental data. The study of the binding energies of all the nuclei from 40Ca to 56Ni shows that it is necessary to introduce three-body forces. The results also reveal the effect of nondiagonal multipoles which are well reproduced by realistic interactions. A better understanding of the electromagnetic behavior of the fsup(n) nuclei of their conjugaison properties and of the relation between 42Sc and 48Sc was obtained. Several calculations of two-body transfer amplitudes were proposed
Availability note (English)
MF available from INIS under the Report Number.Abstract (French)
On a passe en revue la spectroscopie de la couche fp et introduit le modele fsup(n). On a montre que les termes monopolaires de l'Hamiltonien a deux corps etaient determinants dans le comportement des spectres, et que les interactions realistes ne les reproduisaient pas bien. L'etude detaillee de plusieurs noyaux (47Ca, 48Ca, 49Ca, 56Ni, 48Sc, 50Sc, 50Ti et 46Ti, 50Cr, 47V et 49Cr) a montre que l'on pouvait extraire des valeurs tres precises des quelques parametres definissant les contributions monopolaires, de la comparaison entre les calculs et les donnees experimentales. L'etude des energies de liaison des noyaux allant de 40Ca a 56Ni a montre la necessite d'introduire des forces a trois corps. Les resultats montrent aussi l'influence des multipoles non diagonaux bien reproduits par les interactions realistes. On a reussi a mieux comprendre le comportement electromagnetique des noyaux fsup(n) et leurs proprietes de conjugaison ainsi que la relation entre 42Sc et 48Sc. Enfin on a propose plusieurs calculs d'amplitudes de transfert a deux corpsFiles
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Additional details
Additional titles
- Original title (French)
- Spectroscopie de la couche fp: calculs numeriques et aspects theoriques
Publishing Information
- Imprint Pagination
- 195 p.
- Report number
- CRN-PN--76-14
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 8300628
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- BINDING ENERGY; CALCIUM ISOTOPES; CALCIUM 47; CALCIUM 48; CALCIUM 49; CHROMIUM 49; CHROMIUM 50; ENERGY LEVELS; INTERMEDIATE MASS NUCLEI; NICKEL 56; NUCLEAR STRUCTURE; PARTICLE-HOLE MODEL; SCANDIUM 48; SCANDIUM 50; SHELL MODELS; THREE-BODY PROBLEM; TITANIUM 46; TITANIUM 50; TWO-BODY PROBLEM; VANADIUM 47
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CHROMIUM ISOTOPES; DAYS LIVING RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; ENERGY; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MANY-BODY PROBLEM; MATHEMATICAL MODELS; MINUTES LIVING RADIOISOTOPES; NICKEL ISOTOPES; NUCLEAR MODELS; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; RADIOISOTOPES; SCANDIUM ISOTOPES; SECONDS LIVING RADIOISOTOPES; STABLE ISOTOPES; TITANIUM ISOTOPES; VANADIUM ISOTOPES