Christopher Raison

Electromagnetic moments of 215,217Bi: Probing shell evolution beyond N = 126

Andrei N. Andreyev, Anatoly E. Barzakh, M. D. Seliverstov, Zhenxing Yue et autres

9 pages, 8 figures, 1 table

Charge radii and electromagnetic moments of Bi 214 − 218 : Exploring the “southern” border of the Z > 82 octupole-deformation region

Anatoly E. Barzakh, Andrei N. Andreyev, Zhenxing Yue, L. Nies et autres

The changes in the mean-squared charge radii relative to Bi 126 209 ( δ 〈 r 2 〉 N , 126 ) and the magnetic dipole and electric quadrupole moments in Bi 214 − 218 have been measured using the in-source resonance-ionization …

jp, gb, ch, es, hu, uz, sk, om, de, it, ro, be, ca, dk, fi, se, cn, fr, us, au (code pays fourni par la source)

The 76Cu conundrum remains unsolved

Bruno Olaizola, A. Illana, J. Benito, D.P. Suárez-Bustamante et autres

Near the doubly-magic nucleus 78 Ni ( Z = 28 , N = 50 ), there has been a decades-long debate on the existence of a long-lived isomer in 76 Cu. A recent mass measurement claimed to have settled the debate, by …

ca, es, ch, fi, it, sk, gb, pl, Afrique du Sud, be, ro, fr (code pays fourni par la source)

Spectroscopy of 187Tl: shape coexistence

C. Y. Guo, W. Q. Zhang, H. Huang, Shuangquan Zhang et autres

cn, jp, gb, us, sk, be, ru, de, ch (code pays fourni par la source)

Detailed structure of Sn 131 populated in the β decay of isomerically purified In 131 states

J. Benito, L. M. Fraile, Agnieszka Korgul, M. Piersa-Siłkowska et autres

The excited structure of the single-hole nucleus Sn 131 populated by the β − decay of In 131 was investigated in detail at the ISOLDE facility at CERN. This new experiment took advantage of isomeric purification capabilities provided by resonant ionization, making …

es, pl, ch, fi, be, jp, us, gb, it, ro, cz, de, dk, pt, ca, fr (code pays fourni par la source)

Hg178 and asymmetric fission of neutron-deficient pre-actinides

Akhil Jhingan, Christelle Schmitt, A. Lemasson, Saptarshi Biswas et autres

Fission at low excitation energy is an ideal playground to probe the impact of nuclear structure on nuclear dynamics. While the importance of structural effects in the nascent fragments is well established in the (trans-)actinide region, the observation of asymmetric fission in …

in, fr, kr, jp, gb, ch, pl, ru, se, de (code pays fourni par la source)

Identification of excited states in Bi188 and Po188

W. Q. Zhang, Andrei N. Andreyev, Zhentao Liu, Dariusz Seweryniak et autres

The neutron-deficient $^{188}\mathrm{Bi}$ and $^{188}\mathrm{Po}$ isotopes have been studied by $\ensuremath{\gamma}$-ray spectroscopy using the recoil-decay tagging technique with the Argonne Gas-Filled Analyzer. A new 0.25(5)-$\ensuremath{\mu}\mathrm{s}$ isomeric state and a prompt cascade formed by 319-, 366-, and 462-keV $\ensuremath{\gamma}$ rays have been established …

cn, jp, gb, us, ru, be, sk, de, fr (code pays fourni par la source)

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

H. Huang, Wenmei Zhang, Andrei N. Andreyev, Zhentao Liu et autres

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 isomer was …

cn, jp, gb, us, ru, be, sk, de, ch (code pays fourni par la source)

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

W. Q. Zhang, Andrei N. Andreyev, Zhong Liu, Dariusz Seweryniak et autres

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 keV above the spherical 3/2− ground state is …

cn, jp, gb, us, ru, be, sk, de, ch (code pays fourni par la source)

Coulomb excitation of Rn222

Pietro Spagnoletti, Peter A. Butler, L. P. Gaffney, K. Abrahams et autres

The nature of quadrupole and octupole collectivity in $^{222}\mathrm{Rn}$ was investigated by determining the electric-quadrupole ($E2$) and octupole ($E3$) matrix elements using subbarrier, multistep Coulomb excitation. The radioactive $^{222}\mathrm{Rn}$ beam, accelerated to 4.23 MeV/u, was provided by the HIE-ISOLDE facility at CERN. …

ca, gb, ch, Afrique du Sud, se, us, it, be, de, fi, pl, no, ru, es, fr (code pays fourni par la source)

Large Shape Staggering in Neutron-Deficient Bi Isotopes

Anatoly E. Barzakh, Andrei N. Andreyev, Christopher Raison, J. G. Cubiss et autres

The changes in the mean-square charge radius (relative to ^{209}Bi), magnetic dipole, and electric quadrupole moments of ^{187,188,189,191}Bi were measured using the in-source resonance-ionization spectroscopy technique at ISOLDE (CERN). A large staggering in radii was found in ^{187,188,189}Bi^{g}, manifested by a sharp …

ru, jp, gb, be, fr, sk, au, pl, nl, de, ch, ca, il, se, cn, fi (code pays fourni par la source)

First β -decay spectroscopy of In 135 and new β -decay branches of In 134

M. Piersa-Siłkowska, Agnieszka Korgul, J. Benito, L. M. Fraile et autres

The $\ensuremath{\beta}$ decay of the neutron-rich $^{134}\mathrm{In}$ and $^{135}\mathrm{In}$ was investigated experimentally in order to provide new insights into the nuclear structure of the tin isotopes with magic proton number $Z=50$ above the $N=82$ shell. The $\ensuremath{\beta}$-delayed $\ensuremath{\gamma}$-ray spectroscopy measurement was performed …

pl, es, ch, gb, ru, it, pt, ro, be, de, dk, fi, us, ca, fr (code pays fourni par la source)