Spectroscopie du noyau 139Ce / Samra Kaim  

Public ISBD Titre : Spectroscopie du noyau 139Ce : Etude expérimentale et interprétation théorique Type de document : texte imprimé Auteurs : Samra Kaim, Auteur ; Fatima Benrachi, Directeur de thèse Editeur : Universite :mentouri constantine Année de publication : 2015 Importance : 1 vol (105 f .) Format : 29cm Langues : Français (fre) Catégories : Thèses & Mémoires:Physique Mots-clés : Physique Index. décimale : 530-Physique Résumé : High-spin states in 139Ce have been populated by the 130Te(14C,5n) reaction, using ORGAM array installed at IPN Orsay. The level scheme has been extended to 43/2 ħ in spin and ~ 8 MeV in energy, including a new dipole band. The multipolarity has been measured by the ''Directional Correlation from Oriented states of nuclei'' (DCO) and anisotropy ratios, and the parity of several states has been changed from negative to positive. Extended shell-model calculations have been used to investigate the structure of the observed states. The good agreement of the shell-model calculations with the experimental level scheme supports the spin-parity assignment to low- and medium-spin states. The dipole band configuration was investigated using the CNS and TAC models. The Ï€1h211/2⊗ν1h-111/2 configuration with a deformation of (ε2 = 0.12, γ = 0°) and rotation around a tilted axis with θ ≈ 70°, reproduces best the experimental aligned spins Côte titre : DPH/0274 En ligne : https://bu.umc.edu.dz/theses/physique/KAI6915.pdf Format de la ressource électronique : PDF Spectroscopie du noyau 139Ce : Etude expérimentale et interprétation théorique [texte imprimé] / Samra Kaim, Auteur ; Fatima Benrachi, Directeur de thèse . - [S.l.] : Universite :mentouri constantine, 2015 . - 1 vol (105 f .) ; 29cm. Langues : Français (fre) Catégories : Thèses & Mémoires:Physique Mots-clés : Physique Index. décimale : 530-Physique Résumé : High-spin states in 139Ce have been populated by the 130Te(14C,5n) reaction, using ORGAM array installed at IPN Orsay. The level scheme has been extended to 43/2 ħ in spin and ~ 8 MeV in energy, including a new dipole band. The multipolarity has been measured by the ''Directional Correlation from Oriented states of nuclei'' (DCO) and anisotropy ratios, and the parity of several states has been changed from negative to positive. Extended shell-model calculations have been used to investigate the structure of the observed states. The good agreement of the shell-model calculations with the experimental level scheme supports the spin-parity assignment to low- and medium-spin states. The dipole band configuration was investigated using the CNS and TAC models. The Ï€1h211/2⊗ν1h-111/2 configuration with a deformation of (ε2 = 0.12, γ = 0°) and rotation around a tilted axis with θ ≈ 70°, reproduces best the experimental aligned spins Côte titre : DPH/0274 En ligne : https://bu.umc.edu.dz/theses/physique/KAI6915.pdf Format de la ressource électronique : PDF

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
DPH/0274	DPH/0274	Thèse	Bibliothéque des sciences	Français	Disponible Disponible

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