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AbstractAbstract
[en] This report concerns the use of hyperfine interaction to magnetism measurements and to the determination of the nuclear structure of Terbium isotopes by the low temperature nuclear orientation technique. In the first part we show that the rhodium atom does not support any localized moment in the chromium matrix. The hyperfine magnetic field at the rhodium nuclear site follows the Overhauser distribution, and the external applied magnetic field supports a negative Knight shift of 16%. In the second part we consider the structure of neutron deficient Terbium isotopes. We introduce a coherent way of evaluation and elaborate a new nuclear thermometer. The magnetic moments allows to strike on the studied states configuration. The analysis of our results shows a decrease of the nuclear deformation for the lighter isotopes
[fr]
On etudie l'utilisation de l'interaction hyperfine a des mesures de magnetisme et a la determination de la structure nucleaire de noyaux de Terbium en se servant de la technique d'orientation nucleaire a basses temperatures. Dans la premiere etude nous demontrons que le rodhium ne porte pas de moment localise dans une matrice de chrome. Le champ magnetique hyperfin au site du noyau de rhodium suit la distribution d'Overhauser, et le champ magnetique exterieur applique subit un deplacement de Knight negatif de 16%, independant du champ applique. Dans la deuxieme etude nous examinons la structure des isotopes de Terbium deficients en neutrons. Nous presentons une methode coherente d'evaluation et elaborons un nouveau thermometre nucleaire. Les moments magnetiques permettent de conclure sur la configuration des etats etudies. L'analyse de nos resultats montre la diminution de la deformation du noyau vers les isotopes plus legersOriginal Title
Interactions hyperfines mesurees par orientation nucleaire
Primary Subject
Source
1982; 54 p; These (3. Cycle).
Record Type
Report
Literature Type
Thesis/Dissertation
Report Number
Country of publication
CHROMIUM BASE ALLOYS, ENERGY-LEVEL TRANSITIONS, HYPERFINE STRUCTURE, INTERNAL CONVERSION RADIOISOTO, KNIGHT SHIFT, MAGNETIC FIELDS, METASTABLE STATES, NEUTRON-DEFICIENT ISOTOPES, NUCLEAR MAGNETIC MOMENTS, NUCLEAR STRUCTURE, ORIENTED NUCLEI, OVERHAUSER EFFECT, QUADRUPOLE MOMENTS, RHODIUM 101, RHODIUM ADDITIONS, TERBIUM 152, TERBIUM 153, TERBIUM 154, TERBIUM 156, TERBIUM 160, TERBIUM ISOTOPES
ALLOYS, ALPHA DECAY RADIOISOTOPES, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CHROMIUM ALLOYS, DAYS LIVING RADIOISOTOPES, ELECTRON CAPTURE RADIOISOTOPES, ENERGY LEVELS, EXCITED STATES, HOURS LIVING RADIOISOTOPES, INTERMEDIATE MASS NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, MAGNETIC MOMENTS, MINUTES LIVING RADIOISOTOPES, NUCLEAR PROPERTIES, NUCLEI, ODD-EVEN NUCLEI, ODD-ODD NUCLEI, RADIOISOTOPES, RARE EARTH NUCLEI, RHODIUM ISOTOPES, TRANSITION ELEMENT ALLOYS, YEARS LIVING RADIOISOTOPES
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