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The reanalysis of all the experimental data on 225Ra demonstrates the coexistence of reflection asymmetry and reflection symmetry in this nucleus. In 225Ra as well as 227Ra and 229Th this phenomenon can be explained by the calculated ability of the odd particle in different orbitals to polarise the soft nuclear shapes toward smaller and larger octupole deformations.
The special degeneracy which occurs in the harmonic-oscillator potential when two of the frequencies have ratios of small integer numbers is exploited. Favored shell energies occur for particle numbers which vary with the third frequency. Applications to realistic nuclear potentials show that this degeneracy leads to special shell effects for axial shapes (1:1 ratio) but also for the 2:1 ratio exe
Low-temperature nuclear orientation experiments with isotope separated 228,230pa in an iron host matrix have been performed. From the temperature dependence of the γ-anisotropy in the decay of the isotopes the Larmor frequencies of the ground states have been derived as |VL(228PaFe)| = 552(17) MHz and |vL(230PaFe)| = 475 (13) MHz. Using Bhf(PaFe) = -62.8 (9.0) T the magnetic moments have been dedu
Multiple superdeformed rotational bands have been identified in a nucleus for the first time. Cascades of 14, 13, and 11 transitions have been assigned to three bands in Dy153. Despite the small intensities, it has been possible to follow the decay of these bands from an angular frequency of 0.7 down to 0.4 MeV/Latin small letter h with stroke. In all three cases, the dynamic moment of inertia scr
We discuss how especially the alignment and the shape polarisation of specific orbitals influence the transition energies in superdeformed bands. The very similar transition energies observed recently in neighbouring nuclei can be qualitatively understood in our approach and the special properties of high-N orbits can be analysed in the same formalism.
Lifetime measurements for the isotopes 155Dy and 156Dy have been extended up to spins around 40h{stroke} by the Doppler shift attenuation method in conjunction with γ-γ-coincidence measurements. Results have been obtained for the yrast band in 156Dy and for three bands in 155Dy. Strong retardations of the E2-strengt were observed for intruding terminating sequences, for which specific single parti
The potential of Small Modular Reactors (SMRs) is currently explored in the world. SMRs as technology is still under development but is introduced to the public. In this stage, when much is still uncertain and unknown, media is important. The benefits and risks related to this new technology articulated in media potentially shape different actors' expectations and attitudes towards the technology.
Unga människors vardagsliv, kunskaper och framtidsutsikter formas av förutsättningarna där de bor och skiljer sig åt mellan stad och land. Villkoren där de bor och skiljer sig åt mellan land och stad. Villkoren kan också se helt olika ut i skilda landsbygder. Länge har forskningen om livsvillkoren för barn och unga fokuserat på större städer, men under senare tid har förutsättningarna för unga i s
It is shown that the observed transition energies in the superdeformed bands of 148Gd and 146Gd and the two bands of 147Gd are related by a simple linear expression. This is another indication of the remarkable stability of the superdeformed bands and strongly suggests that only two orbitals are active. The relative properties are analysed in terms of the (effective) aligned spin brought in by spe
The yrast band of118Xe has been extended up to tentatively Iπ = 34+ in a heavy-ion in-beam γ-spectroscopic study using the NORDBALL detector array. A band crossing is observed at the highest spins and interpreted within the Modified Oscillator Model as a transition to a terminating band.
We reply to the preceding Comment.
Detailed spectroscopic studies of the discrete γ-rays feeding and deexciting a 41 2-, 4.6 MeV level in 191Hg are reported. The resulting decay scheme indicates single-particle nature for the states above the 41 2- level. At moderate spin, the corresponding particle alignment mode competes favorably with collective oblate rotation. It is suggested that this sequence is associated with a non-collect
The experimental hindrance factors determined from the fine structure in the C14 decay of Ra223 are strikingly similar to the hindrance factors observed in the alpha decay of odd-A reflection-asymmetric deformed nuclei in spite of the deformed to spherical shape which occurs in the C14 decay. Calculations of the overlap between the reflection-asymmetric ground state of Ra223 and the spherical shel
