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CERN Document Server 4 records found  Search took 1.86 seconds. 
1.
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 Fulltext: PDF;
2.
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;
3.
Evolution of deformation in neutron-rich Ba isotopes up to $A=150$ / Lică, R (CERN ; Bucharest, IFIN-HH) ; Benzoni, G (INFN, Milan) ; Rodríguez, T R (Madrid, Autonoma U.) ; Borge, M J G (CERN ; CSIC, Madrid) ; Fraile, L M (UCM, Somosaguas) ; Mach, H (NCBJ, Warsaw) ; Morales, A I (INFN, Milan ; Milan U. ; Valencia U., IFIC) ; Madurga, M (CERN) ; Sotty, C O (Leuven U.) ; Vedia, V (UCM, Somosaguas) et al. /IDS
The occurrence of octupolar shapes in the Ba isotopic chain was recently established experimentally up to $N=90$. To further extend the systematics, the evolution of shapes in the most neutron-rich members of the $Z=56$ isotopic chain accessible at present, $^{148,150}$Ba, has been studied via $\beta$ decay at the ISOLDE Decay Station. [...]
2018 - 12 p. - Published in : Phys. Rev. C 97 (2018) 024305 Fulltext: PDF;
4.
$β$ 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 Fulltext: PDF;

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