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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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$^{133}$In: A Rosetta Stone for decays of r-process nuclei
/ Xu, Z.Y. (U. Tennessee, Knoxville) ; Madurga, M. (U. Tennessee, Knoxville) ; Grzywacz, R. (U. Tennessee, Knoxville ; Oak Ridge) ; King, T.T. (U. Tennessee, Knoxville ; Oak Ridge) ; Algora, A. (Valencia U., IFIC ; Debrecen, Inst. Nucl. Res.) ; Andreyev, A.N. (York U., England ; JAERI, Tokai) ; Benito, J. (Madrid U.) ; Berry, T. (Surrey U.) ; Borge, M.J.G. (CSIC, Madrid) ; Costache, C. (Bucharest, IFIN-HH ; Leuven U.) et al.
The $\beta$ decays from both the ground state and a long-lived isomer of $^{133}$In were studied at the ISOLDE Decay Station (IDS). With a hybrid detection system sensitive to $\beta$, $\gamma$, and neutron spectroscopy, the comparative partial half-lives (logft) have been measured for all their dominant $\beta$-decay channels for the first time, including a low-energy Gamow-Teller transition and several First-Forbidden (FF) transitions. [...]
arXiv:2306.01842.-
2023-07-14 - 8 p.
- Published in : Phys. Rev. Lett. 131 (2023) 022501
Fulltext: Publication - PDF; 2306.01842 - PDF;
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Beta-delayed proton emission from$^{20}$Mg
/ Andreyev, A (York U., England) ; Borge, M J G (Madrid, Inst. Estructura Materia ; CERN) ; Cederkäll, J (Lund U.) ; De Witte, H (Leuven U.) ; Fraile, L M (Madrid U.) ; Fynbo, H O U (Aarhus U.) ; Greenlees, P T (Helsinki Inst. of Phys. ; Jyvaskyla U.) ; Harkness-Brennan, L J (Liverpool U.) ; Howard, A M (Aarhus U.) ; Huyse, M (Leuven U.) et al.
Beta-delayed proton emission from$^{20}$ Mg has been measured at ISOLDE, CERN, with the ISOLDE Decay Station (IDS) setup including both charged-particle and gamma-ray detection capabilities. A total of 27 delayed proton branches were measured including seven so far unobserved. [...]
2016
- Published in : Eur. Phys. J. A 52 (2016) 304
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Competition between Allowed and First-Forbidden $β$ Decay: The Case of $^{208}$Hg$→^{208}$Tl
/ Carroll, R J (Surrey U.) ; Podolyák, Zs (Surrey U. ; Darmstadt, GSI) ; Berry, T (Surrey U.) ; Grawe, H (Darmstadt, GSI) ; Alexander, T (Surrey U.) ; Andreyev, A N (York U., England ; JAEA, Ibaraki) ; Ansari, S (Cologne U.) ; Borge, M J G (CERN) ; Brunet, M (Surrey U.) ; Creswell, J R (Liverpool U.) et al.
The $β$ decay of $^{208}$Hg into the one-proton hole, one neutron-particle $^{208}_{81}$Tl$_{127}$ nucleus was investigated at CERN-ISOLDE. Shell-model calculations describe well the level scheme deduced, validating the proton-neutron interactions used, with implications for the whole of the N>126, Z<82 quadrant of neutron-rich nuclei. [...]
2020 - 6 p.
- Published in : Phys. Rev. Lett. 125 (2020) 192501
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Investigation of the $\Delta n = 0$ selection rule in Gamow-Teller transitions: The $\beta$-decay of $^{207}$Hg
/ Berry, T A (Surrey U.) ; Podolyák, Zs (Surrey U.) ; Carroll, R J (Surrey U.) ; Lică, R (CERN ; Bucharest, IFIN-HH) ; Grawe, H ; Timofeyuk, N K (Surrey U.) ; Alexander, T (Surrey U.) ; Andreyev, A N (York U., England) ; Ansari, S (Cologne U.) ; Borge, M J G (CERN ; Madrid, Inst. Estructura Materia) et al.
Gamow-Teller $\beta$ decay is forbidden if the number of nodes in the radial wave functions of the initial and final states is different. This $\Delta n=0$ requirement plays a major role in the $\beta$ decay of heavy neutron-rich nuclei, affecting the nucleosynthesis through the increased half-lives of nuclei on the astrophysical $r$-process pathway below both $Z=50$ (for $N>82$ ) and $Z=82$ (for $N>126$). [...]
2019 - 5 p.
- Published in : Phys. Lett. B 793 (2019) 271-275
Article from SCOAP3: PDF;
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$\beta$-delayed neutron spectroscopy of $^{133}$In
/ Xu, Z.Y. (U. Tennessee, Knoxville) ; Madurga, M. (U. Tennessee, Knoxville) ; Grzywacz, R. (U. Tennessee, Knoxville ; Oak Ridge) ; King, T.T. (U. Tennessee, Knoxville ; Oak Ridge) ; Algora, A. (Valencia U., IFIC ; Debrecen, Inst. Nucl. Res.) ; Andreyev, A.N. (York U., England ; JAERI, Tokai) ; Benito, J. (Madrid U.) ; Berry, T. (Surrey U.) ; Borge, M.J.G. (Madrid, Inst. Estructura Materia) ; Costache, C. (Bucharest, IFIN-HH) et al.
The decay properties of $^{133}$In were studied in detail at the ISOLDE Decay Station (IDS). The implementation of the Resonance Ionization Laser Ion Source (RILIS) allowed separate measurements of its $9/2^+$ ground state ($^{133g}$In) and $1/2^-$ isomer ($^{133m}$In). [...]
arXiv:2303.12173.-
2023-07-14 - 9 p.
- Published in : Phys. Rev. C 108 (2023) 014314
Fulltext: Publication - PDF; 2303.12173 - PDF;
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Fast-timing study of the $l$-forbidden $1/2^+ \rightarrow 3/2^+ M1$ transition in $^{129}Sn$
/ Lică, R (CERN ; Bucharest, IFIN-HH) ; Mach, H (Warsaw, Inst. Nucl. Studies) ; Fraile, L M (UCM, Madrid, Dept. Phys.) ; Gargano, A (INFN, Naples) ; Borge, M J G (CERN ; Madrid, Inst. Estructura Materia) ; Mărginean, N (Bucharest, IFIN-HH) ; Sotty, C O (Bucharest, IFIN-HH ; Leuven U.) ; Vedia, V (UCM, Madrid, Dept. Phys.) ; Andreyev, A N (York U., England) ; Benzoni, G (INFN, Milan) et al.
The levels in Sn129 populated from the β− decay of In129 isomers were investigated at the ISOLDE facility of CERN using the newly commissioned ISOLDE Decay Station (IDS). The lowest 1/2+ state and the 3/2+ ground state in Sn129 are expected to have configurations dominated by the neutron s1/2 (l=0) and d3/2 (l=2) single-particle states, respectively. [...]
2016 - 7 p.
- Published in : Phys. Rev. C 93 (2016) 044303
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First β-decay spectroscopy of $^{135}$In and new $β$-decay branches of $^{134}$In
/ IDS Collaboration
The $\beta$ decay of the neutron-rich $^{134}$In and $^{135}$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 $\beta$-delayed $\gamma$-ray spectroscopy measurement was performed at the ISOLDE facility at CERN, where indium isotopes were selectively laser-ionized and on-line mass separated. [...]
arXiv:2110.13988.-
2021-10-26 - 19 p.
- Published in : Phys. Rev. C 104 (2021) 044328
Fulltext: 2110.13988 - PDF; PhysRevC.104.044328 - PDF;
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$β$ decay studies of n-rich Cs isotopes with the ISOLDE Decay Station
/ Lică, R (CERN ; Bucharest, IFIN-HH) ; Benzoni, G (INFN, Milan) ; Morales, A I (INFN, Milan) ; Borge, M J G (CERN ; Madrid, Inst. Estructura Materia) ; Fraile, L M (UCM, Madrid, Dept. Phys.) ; Mach, H (Warsaw U.) ; Madurga, M (CERN) ; Sotty, C (Bucharest, IFIN-HH ; Leuven U.) ; Vedia, V (UCM, Madrid, Dept. Phys.) ; Witte, H De (Leuven U.) et al.
Neutron-rich Ba isotopes are expected to exhibit octupolar correlations, reaching their maximum in isotopes around mass A = 146. The odd-A neutron-rich members of this isotopic chain show typical patterns related to non-axially symmetric shapes, which are however less marked compared to even-A ones, pointing to a major contribution from vibrations. [...]
2017 - 14 p.
- Published in : J. Phys. G 44 (2017) 054002
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