CERN Accelerating science

CERN Document Server 116 record trovati  1 - 10successivofine  salta al record: La ricerca ha impiegato 1.24 secondi. 
1.
New upper limits for β-delayed fission probabilities of Fr230,232 and Ac230,232,234 / Bara, S (Leuven U.) ; Algora, A (Valencia U., IFIC) ; Andel, B (Comenius U.) ; Andreyev, A N (York U., England) ; Antalic, S (Comenius U.) ; Bark, R A (iThemba LABS) ; Borge, M J G (Madrid, Inst. Estructura Materia) ; Camaiani, A (Leuven U. ; INFN, Florence ; U. Florence (main)) ; Cocolios, T E (Leuven U.) ; Cubiss, J G (Edinburgh U. ; York U., England) et al.
The process of β-delayed fission (βDF) of Fr230,232 and Ac230,232,234 was studied in an experiment performed at the ISOLDE facility at CERN. As no fission fragments were observed for any of the nuclei investigated, upper limits for their βDF probability (PβDF) were determined. [...]
2025 - 11 p. - Published in : Phys. Rev. C 111 (2025) 065803 Fulltext: PDF;
2.
Observation of the J≤7/2 low-spin states in Fr213 populated in the electron capture of the 1/2− ground state of Ra213 / IDS Collaboration
A detailed level scheme of Fr126213 following the EC/β+ decay of the 1/2−Ra213 parent ground state was built in an experiment performed at the ISOLDE Decay Station, CERN. The fragmented total β decay strength favours the direct population of several low-spin (J≤7/2) excited states. [...]
2024 - 15 p. - Published in : Phys. Rev. C 110 (2024) 064315 Fulltext: PDF;
3.
Compound-Nucleus and Doorway-State Decays of $\beta$-delayed Neutron Emitters $^{51, 52, 53}\mathrm{K}$ / Xu, Z Y (Tennessee U.) ; Grzywacz, R (Tennessee U. ; Oak Ridge) ; Gottardo, A (IJCLab, Orsay ; INFN, Legnaro) ; Madurga, M (Tennessee U.) ; Alonso, I M (Madrid, Inst. Estructura Materia) ; Andreyev, A N (JAERI, Tokai ; York U., England) ; Benzoni, G (INFN, Milan) ; Borge, M J G (Madrid, Inst. Estructura Materia) ; Cap, T (NCBJ, Warsaw) ; Costache, C (Bucharest, IFIN-HH) et al.
We investigated decays of $^{51, 52, 53}\mathrm{K}$ at the ISOLDE Decay Station at CERN in order to understand the mechanism of the $\beta$-delayed neutron-emission ($\beta n$) process. The experiment quantified neutron and $\gamma$-ray emission paths for each precursor [...]
2024 - 7 p. - Published in : Phys. Rev. Lett. 133 (2024) 042501 Fulltext: PDF;
4.
The $^{76}$Cu conundrum remains unsolved / IDS Collaboration
Near the doubly-magic nucleus \nuc{Ni}{78} ($Z=28$, $N=50$), there has been a decades-long debate on the existence of a long-lived isomer in \nuc{Cu}{76}. A recent mass measurement claimed to have settled the debate, by measuring the energy of the isomer and shedding light on the structure of the nucleus. [...]
arXiv:2505.06400.- 2025-05-09 - Published in : Phys. Lett. B 9 (2025) 139551 Fulltext: PDF;
5.
Impact of Newly Measured <math display="inline"><mi>β</mi></math>-Delayed Neutron Emitters around <math display="inline"><mrow><mmultiscripts><mrow><mi>Ni</mi></mrow><mprescripts/><none/><mrow><mn>78</mn></mrow></mmultiscripts></mrow></math> on Light Element Nucleosynthesis in the Neutrino Wind Following a Neutron Star Merger / Tolosa-Delgado, A. (CSIC, Madrid ; CERN ; Jyvaskyla U.) ; Tain, J.L. ; Reichert, M. ; Arcones, A. ; Eichler, M. ; Rasco, B.C. ; Brewer, N.T. ; Rykaczewski, K.P. ; Yokoyama, R. ; Grzywacz, R. et al.
Neutron emission probabilities and half-lives of 37 beta-delayed neutron emitters from 75Ni to 92Br were measured at the RIKEN Nishina Center in Japan, including 11 one-neutron and 13 two-neutron emission probabilities and 6 half-lives measured for the first time, which supersede theoretical estimates. These nuclei lie in the path of the weak r-process occurring in neutrino-driven winds from the accretion disk formed after the merger of two neutron stars, synthesizing elements in the A~80 abundance peak. [...]
arXiv:2504.06008.- 2025-05-01 - 11 p. - Published in : Phys. Rev. Lett. 134 (2025) 172701 Fulltext: PDF;
6.
Beta delayed neutron emission of $N=84$ $^{132}$Cd / Madurga, M. (U. Tennessee, Knoxville) ; Xu, Z.Y. (U. Tennessee, Knoxville) ; Grzywacz, R. (U. Tennessee, Knoxville) ; Andreyev, A. (York U., England) ; Benzoni, G. (INFN, Milan) ; Borge, M.J.G. (CERN) ; Costache, C. (Bucharest, IFIN-HH) ; Cox, I. (U. Tennessee, Knoxville) ; Dimitrov, B. (Sofiya, Inst. Nucl. Res.) ; Van Duppen, P. (Leuven U.) et al.
Using the time-of-flight technique, we measured the beta-delayed neutron emission of $^{132}$Cd. [...]
arXiv:2412.04333.
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Fulltext
7.
Charge radii of thallium isotopes near the N=126 shell closure / IDS Collaboration
The changes in the mean-squared charge radius of Tlg209 (N=128) and Tlm207 (N=126) relative to Tl205 have been measured for the first time using the in-source laser resonance-ionization spectroscopy technique with the Laser Ion Source and Trap (LIST) at ISOLDE (CERN). The application of the LIST suppresses the dominant background from isobaric francium isotopes and allows access to thallium nuclides with A⩾207. [...]
2024 - 9 p. - Published in : Phys. Rev. C 110 (2024) 034315 Fulltext: PDF;
8.
Detailed study of the decay of $^{21}$Mg / IS507 Collaboration
Beta-delayed proton and gamma emission in the decay of $^{21}$Mg has been measured at ISOLDE, CERN with the ISOLDE Decay Station (IDS) set-up. The existing decay scheme is updated, in particular what concerns proton transitions to excited states in $^{20}$Ne. [...]
- Published in : The European Physical Journal A60 (2024) 153 Fulltext: PDF;
9.
Detailed structure of Sn131 populated in the β decay of isomerically purified In131 states / IDS Collaboration
The excited structure of the single-hole nucleus Sn131 populated by the β− decay of In131 was investigated in detail at the ISOLDE facility at CERN. This new experiment took advantage of isomeric purification capabilities provided by resonant ionization, making it possible to independently study the decay of each isomer for the first time. [...]
2024 - 19 p. - Published in : Phys. Rev. C 110 (2024) 014328 Fulltext: PDF;
10.
On the nature of yrast states in neutron-rich polonium isotopes / IDS Collaboration
Polonium isotopes having two protons above the shell closure at $Z=82$ show a wide variety of low-lying high-spin isomeric states across the whole chain. The structure of neutron-deficient isotopes up to $^{210}$Po ($N=126$) is well established as they are easily produced through various methods. [...]
arXiv:2407.03839.- 2025-02-05 - 6 p. - Published in : Phys. Rev. Lett. 134 (2025) 052502 Fulltext: PDF;

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