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Akademický článek

The spectroscopic quadrupole moment of the 21+ state of 12C: A benchmark of theoretical models

Publikováno v: Physics Letters B, Vol 845, Iss , Pp 138114- (2023)

The spectroscopic quadrupole moment of the first 2+ state of 12C has been measured employing the Coulomb-excitation re-orientation technique. Our result of Qs(21+)=+9.3−3.8+3.5efm2 suggests a larger oblate deformation than previously reported. Comb

Externí odkaz: https://doaj.org/article/8419ebe5635e47aab69975d5a0a4f643

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Akademický článek

Experimental observation of the M1 scissors mode in 254No

Publikováno v: Physics Letters B, Vol 834, Iss , Pp 137479- (2022)

We present the first experimental evidence of the scissors mode in the superheavy nucleus 254No produced in the 208Pb(48Ca, 2nγ))254No reaction. The spectrum of γ rays emitted by the excited 254No nuclei shows an enhanced γ-ray yield for transitio

Externí odkaz: https://doaj.org/article/d0e93316f196432194cd3a02959da4b3

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Akademický článek

First observation of the decay of the 13/2+ isomer in 183Hg and B(M2) systematics of neutron transitions across the nuclear chart

Publikováno v: Physics Letters B, Vol 833, Iss , Pp 137345- (2022)

The decay of the 13/2+ isomeric state in 183Hg was observed for the first time following the α decay of the 13/2+ isomer in 187Pb produced in the 142Nd(50Cr, 2p3n) reaction. Using α−γ delayed coincidence measurements, the half-life of this isome

Externí odkaz: https://doaj.org/article/89ef95c7ed6e47b69d24b32f2fc05d6f

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Akademický článek

First observation of a shape isomer and a low-lying strongly-coupled prolate band in neutron-deficient semi-magic 187Pb

Publikováno v: Physics Letters B, Vol 829, Iss , Pp 137129- (2022)

Prompt and delayed γ-ray spectroscopy of the neutron-deficient, semi-magic isotope 187Pb has been performed using the recoil-decay and isomer-decay tagging techniques at the Argonne Gas-Filled Analyzer. A new 5.15(15)-μs isomeric state at only 308

Externí odkaz: https://doaj.org/article/965a5ee42f914aabbc333b9c3c8fbf51

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Akademický článek

Evidence against the wobbling nature of low-spin bands in 135Pr

Publikováno v: Physics Letters B, Vol 824, Iss , Pp 136840- (2022)

The electromagnetic character of the ΔI=1 transitions connecting the 1- to 0-phonon and the 2- to 1-phonon wobbling bands should be dominated by an E2 component, due to the collective motion of the entire nuclear charge. In the present work it is sh

Externí odkaz: https://doaj.org/article/7c2e1f5a73fd4498817745273c7a59f1

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Akademický článek

Lifetime measurements of excited states in 169,171,173Os: Persistence of anomalous B(E2) ratios in transitional rare earth nuclei in the presence of a decoupled i13/2 valence neutron

Publikováno v: Physics Letters B, Vol 820, Iss , Pp 136527- (2021)

Lifetimes of low-lying excited states in the νi13/2+ bands of the neutron-deficient osmium isotopes 169,171,173Os have been measured for the first time using the recoil-distance Doppler shift and recoil-isomer tagging techniques. An unusually low va

Externí odkaz: https://doaj.org/article/4629c7937f1c41f1bf2930b61eefabbc

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Akademický článek

Population of a low-spin positive-parity band from high-spin intruder states in 177Au: The two-state mixing effect

Publikováno v: Physics Letters B, Vol 806, Iss , Pp 135488- (2020)

The extremely neutron-deficient isotopes 177,179Au were studied by means of in-beam γ-ray spectroscopy. Specific tagging techniques, α-decay tagging in 177Au and isomer tagging in 179Au, were used for these studies. Feeding of positive-parity, near

Externí odkaz: https://doaj.org/article/256ea9cf4689410185827995ef38fef2

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Akademický článek

Towards saturation of the electron-capture delayed fission probability: The new isotopes 240Es and 236Bk

Publikováno v: Physics Letters B, Vol 764, Iss C, Pp 265-270 (2017)

The new neutron-deficient nuclei 240Es and 236Bk were synthesised at the gas-filled recoil separator RITU. They were identified by their radioactive decay chains starting from 240Es produced in the fusion–evaporation reaction 209Bi(34S,3n)240Es. Ha

Externí odkaz: https://doaj.org/article/514015fe619c48df9cddcb6fc6c91cee

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Akademický článek

Lifetime measurements of excited states in 163W and the implications for the anomalous B(E2) ratios in transitional nuclei

Publikováno v: Physics Letters B, Vol 798, Iss , Pp - (2019)

This letter reports lifetime measurements of excited states in the odd-N nucleus 163W using the recoil-distance Doppler shift method to probe the core polarising effect of the i13/2 neutron orbital on the underlying soft triaxial even-even core. The

Externí odkaz: https://doaj.org/article/07433fd65b6043c4ae66b02964200cde

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Akademický článek

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