Search results for "Projection model"

showing 2 items of 2 documents

Study of Even Gd Nuclei by Decay of Oriented Tb, With Analysis by Simple Boson Models

1983

We have studied low-spin states of 150,152,154,156Gd by nuclear orientation of β-decaying Tb in a Gd host. Especially by means of multipole mixing ratios, including E0/E2, we have checked and revised spin-parities and assignments to (quasi) rotational ground, β and γ bands. For 150Gd we propose the new interpretation 1207.2 keV (0β+), 1518.5 keV (2β+), 1700.1 keV (4β+), 1430.5 keV (2γ+), 1988.0 keV (3γ+), 2080.0 keV (4γ+). For 152,154,156Gd we find agreement with recent literature. Our comparison with theory includes available data on 158,160Gd and on states up to 10g+, 10β+, 7γ+. We review our previously proposed "projection model", which is basically of the Bohr-Mottelson geometrical type…

Physics010308 nuclear & particles physicsPhononCondensed Matter Physics7. Clean energy01 natural sciencesAtomic and Molecular Physics and OpticsProjection model0103 physical sciencesAlgebraic numberAtomic physics010306 general physicsMultipole expansionMathematical PhysicsNuclear orientationBosonPhysica Scripta
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EPM calculations of E2/M1 mixing ratios for even samarium isotopes 146–152Sm

1987

Abstract The M1 operator and the E2/M1 mixing ratios, Δ (E2/M1), are discussed in the framework of the extended phonon projection model (EPM). The model is applied to 146, 148, 150, 152 Sm to describe their M1 properties. Comparison is made between the EPM, the consistent- Q formalism (CQF) of the basic interacting-boson approximation (IBA-1) and the experimental Δ(E2/M1) data. Both theoretical approaches give reasonably good results and parameter systematics.

PhysicsSamariumProjection modelNuclear and High Energy PhysicsFormalism (philosophy of mathematics)chemistryIsotopePhononQuantum electrodynamicschemistry.chemical_elementThermodynamicsPhysics Letters B
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