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Six rotational bands up to energies Ex = 24.7 MeV and spins Jπ=(79/2−) have been identified in 109Sn using the GAMMASPHERE γ-detector array. Four of the bands show smoothly decreasing dynamic moments of inertia at rotational frequencies ℏω > 0.6 MeV. The bands arise at medium spins from a coupling of a valence d5/2, g7/2 or h11/2 neutron to the deformed 2p2h proton excitation of the Z=50 core 108S
The moments of inertia of rotational bands in the cranked harmonic oscillator are explored. The important role played by the maximum spin is pointed out. A qualitative agreement is found with the properties of recently observed superdeformed bands.
New high spin states in 25Mg have been located above the neutron threshold using the 12C(14N, pγ)25Mg reaction at E=23.5 MeV. The members of the ground state rotational band (Kπ= 5 2+ have been tentatively identified up to 15 2+. The yrast 15 2+ (not a member of the ground state band) and 17 2+ states have also been tentatively assigned. These results support the interpretation of the new 17 2+ st
General properties of terminating bands are briefly reviewed and exemplified on the observed high-spin properties ofl58Er andl56Er. The very similar features of the positive parity high-spin spectra of the N = 88 isotones of Dy, Er and Yb are pointed out and discussed. The possibility to estimate £(E2)-values in terminating bands from measured feeding times is explored. The spin contribution from
The particle-rotor model using strong coupling basis functions is briefly reviewed. Recent developments are discussed. For example, a formalism for odd-odd nuclei (and negative parity states in even nuclei) is presented. With a standard neutron-proton interaction, measured spins and moments of transitional and deformed Ho nuclei are used to extract their main configurations. Total energy calculati
New high spin states in Mg25 (up to 13.3 MeV in excitation) have been located using the N12,p)25Mg reaction at a laboratory beam energy of 23.5 MeV. Gamma decay from 28 neutron unbound levels has been observed (24 of which are reported here for the first time) up to 7 MeV above the neutron drip line. Tentative identification of the yrast line up to (17/2+ has been made, along with an extension of
High-spin states in 154Dy have been studied using the TESSA2 γ-rays spectrometer following the 110Pd(48Ca,4n)154Dy reaction at a beam energy of 210 MeV. States up to 44+ and 37- have been observed. Below spin 30 the data display regular rotational behaviour which can be interpreted in terms of the cranked shell model. Above spin 30, sequences of levels connected by stretched E2 transitions, which
Although outcomes for newly diagnosed acute myeloid leukaemia (AML) have been incrementally improved over the last decades, management of relapsed and refractory (R/R) AML remains a medical challenge. A curative intent for R/R AML usually involves chemotherapy (with or without targeted therapy) with subsequent consolidation, including allogeneic haematopoietic stem cell transplantation. Despite th
A method of calculating high-spin states of nuclei within the cranked Nilsson-Strutinsky framework is presented and discussed in some detail. With this method, various high-spin features of nuclei are studied, such as shape coexistence, shape changes, band crossings and band terminations. Nuclei with different mass numbers such as 106Pd, 118Te, 158Yb and 187Au are used to exemplify the formalism.
How do you write a fiction text that relates to entrepreneurship without rewarding entrepreneurship, successful innovations, or a commercial market? That was my initial question when I set out to write a short story with entrepreneurship in focus. In this metatext, I reflect on altruistic entrepreneurship and the writing process for writing the short story that emerged in relation to the research
Omnivory is increasingly recognized as a dynamic stabilizing force underenvironmental change. Despite its ubiquity across ecosystems, trophic levelsand spatiotemporal scales, our empirical understanding of how omnivoresrespond to changing conditions in terrestrial ecosystems is limited. Here wecombine macroecological and paleoecological approaches across seven bearspecies—the largest terrestrial cOmnivory is increasingly recognized as a dynamic stabilizing force under environmental change. Despite its ubiquity across ecosystems, trophic levels and spatiotemporal scales, our empirical understanding of how omnivores respond to changing conditions in terrestrial ecosystems is limited. Here we combine macroecological and paleoecological approaches across seven bear species—the largest terrestr
Befrielsen av Auschwitz den 27 januari 1945 har blivit ett datum som är förknippat med minnet av förintelsen. Drygt 80 år efter att Röda armén tågade in i de läger som återfanns i och omkring den polska staden Oświęcim är behovet fortfarande stort att besvara frågor om vad som möjliggjorde genomförandet av förintelsen. Andra viktiga spörsmål handlar om på vilka sätt som de överlevande hanterade övThe liberation of Auschwitz on January 27, 1945, has become a date associated with the memory of the Holocaust. More than 80 years after the Red Army marched into the camps in and around the Polish city of Oświęcim, there is still a great need to answer questions about what made the Holocaust possible. Other important questions concern the ways in which the survivors handled the transition to a li
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
