Nonunique first-forbidden β-decay and structure in 42K, 142Pr and 170Tm
Description
β-γ-angular correlations of nonunique first-forbidden β-transitions in 42K, 142Pr and 170Tm have been measured. Employing further available data like spectrum shape, β-γ-circularly polarized correlation, electron polarization and anisotropy of γ-rays from oriented nuclei the nuclear wave functions could be extracted. In the case of 42K and 142Pr only the extended shell-model which allows the mixture of different configurations of valence nucleons describes these nuclei and the mixing-coefficients are obtained from the experimental data. For the highly deformed nucleus 170Tm the Nilsson-model with a deformed Saxon-Woods potential is applicable. For this nucleus the theoretical calculations allow to adjust the deformation parameter to the experimental data. (orig.)
Availability note (English)
MF available from INIS under the Report Number.Abstract (German)
β-γ-Winkelkorrelationen an einfach nonunique verbotenen β-Zerfaellen der Kerne 42K, 142Pr und 170Tm wurden gemessen. Mit Hilfe zusaetzlicher Observablen, wie Shape-Faktor, β-γ-Zirkularpolarisationskorrelation, Elektronenpolarisation und Anisotropie von γ-Strahlung bei polarisierten Kernen wurde die Kernstruktur berechnet. Die Kerne 42K und 142Pr koennen mit einem Schalenmodell mit Konfigurationsmischungen beschrieben werden. Aus den experimentellen Daten konnten durch Anpassung die Mischungskoeffizienten festgelegt werden. Fuer den deformierten Kern 170Tm ergibt sich eine Beschreibung im Nilsson-Modell mit einem deformierten Saxon-Woods-Potential. Hier konnte aus den experimentellen Daten der Deformationsparameter bestimmt werden. (orig.)
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Additional details
Additional titles
- Original title (German)
- Einfach nonunique verbotener Betazerfall und Struktur der Kerne
Publishing Information
- Imprint Pagination
- 64 p.
- Report number
- INIS-mf--3923
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 8342536
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- ANGULAR CORRELATION; BETA DECAY; BETA DETECTION; BETA-MINUS DECAY; COINCIDENCE SPECTROMETRY; ERRORS; FORBIDDEN TRANSITIONS; GAMMA DETECTION; NUCLEAR DEFORMATION; NUCLEAR STRUCTURE; POTASSIUM 42; PRASEODYMIUM 142; SHELL MODELS; THULIUM 170
- Descriptors DEC
- BASIC INTERACTIONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHARGED PARTICLE DETECTION; COINCIDENCE METHODS; CORRELATIONS; COUNTING TECHNIQUES; DECAY; DEFORMATION; ELECTRON CAPTURE RADIOISOTOPES; ENERGY-LEVEL TRANSITIONS; HOURS LIVING RADIOISOTOPES; INTERACTIONS; INTERMEDIATE MASS NUCLEI; ISOTOPES; LEPTONIC DECAY; MATHEMATICAL MODELS; NUCLEAR MODELS; NUCLEI; ODD-ODD NUCLEI; PARTICLE DECAY; POTASSIUM ISOTOPES; PRASEODYMIUM ISOTOPES; RADIATION DETECTION; RADIOISOTOPES; RARE EARTH NUCLEI; THULIUM ISOTOPES; WEAK INTERACTIONS
Optional Information
- Notes
- 15 figs.; 3 tabs.; 66 refs. To be published in KFK--2471.