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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
Fulltext: PDF;
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2.
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High-Statistics Sub-Barrier Coulomb Excitation of $^{106,108,110}$Sn
/ Park, J (Lund U.) ; Knyazev, A (Lund U.) ; Rickert, E (Lund U.) ; Golubev, P (Lund U.) ; Cederkäll, J (Lund U. ; CERN) ; Andreyev, A N (CERN ; York U., England) ; de Angelis, G (INFN, Legnaro) ; Arnswald, K (Cologne U.) ; Barber, L (Manchester U.) ; Berger, C (Munich, Tech. U.) et al.
A Coulomb excitation campaign on $^{106,108,110}$Sn at 4.4–4.5 MeV/u was launched at the HIE-ISOLDE facility at CERN. Larger excitation cross sections and γ-ray statistics were achieved compared to previous experiments at ∼2.8 MeV/u. [...]
2020 - 3 p.
- Published in : JPS Conf. Proc. 32 (2020) 010036
Fulltext: PDF;
In : 13th International Conference on Nucleus-Nucleus Collisions (NN 2018), Omiya, Saitama, Japan, 4 - 8 Dec 2018, pp.010036
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3.
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Benchmarking the PreSPEC@GSI experiment for Coulex-multipolarimetry on the $\pi (p_{3/2})\rightarrow \pi (p_{1/2})$ spin-flip transition in $^{85}$Br
/ Napiralla, P (Darmstadt, Tech. Hochsch. ; Darmstadt, GSI) ; Lettmann, M (Darmstadt, Tech. Hochsch.) ; Stahl, C (Darmstadt, Tech. Hochsch.) ; Rainovski, G (Sofiya U.) ; Pietralla, N (Darmstadt, Tech. Hochsch.) ; Afara, S (King Saud U.) ; Ameil, F (Darmstadt, GSI) ; Arici, T (Darmstadt, GSI) ; Aydin, S (Aksaray U.) ; Barrientos, D (CERN) et al.
A first performance test of the Coulomb excitation multipolarimetry (Coulex-multipolarimetry) method is presented. It is based on a $^{85}\hbox {Br}\,\pi p_{3/2}\rightarrow \pi p_{1/2}$ spin-flip experiment performed as part of the PreSPEC-AGATA campaign at the GSI Helmholtzzentrum für Schwerionenforschung (GSI). [...]
2020 - 10 p.
- Published in : Eur. Phys. J. A 56 (2020) 147
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4.
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Octupole states in $^{207}$Tl studied through $β$ decay
/ Berry, T A (Surrey U.) ; Podolyák, Zs (Surrey U.) ; Carroll, R J (Surrey U.) ; Lică, R (CERN ; Bucharest, IFIN-HH) ; Brown, B A (Michigan State U.) ; Grawe, H (Darmstadt, GSI) ; Sotty, Ch (Bucharest, IFIN-HH ; Leuven U.) ; Timofeyuk, N K (Surrey U.) ; Alexander, T (Surrey U.) ; Andreyev, A N (York U., England) et al.
The $β$ decay of $^{207}$Hg into the single-proton-hole nucleus $^{207}$Tl has been studied through $γ$-ray spectroscopy at the ISOLDE Decay Station (IDS) with the aim of identifying states resulting from coupling of the $πs^{−1}_{1/2}, πd^{−1}_{3/2},$ and $πh^{−1}_{11/2}$ shell model orbitals to the collective octupole vibration. Twenty-two states were observed lying between 2.6 and 4.0 MeV, eleven of which were observed for the first time, and 78 new transitions were placed. [...]
2020 - 12 p.
- Published in : Phys. Rev. C 101 (2020) 054311
Fulltext from publisher: PDF;
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5.
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Isospin dependence of electromagnetic transition strengths among an isobaric triplet
/ Boso, A (Padua U. ; INFN, Padua ; Teddington, Natl. Phys. Lab) ; Milne, S A (York U., England) ; Bentley, M A (York U., England) ; Recchia, F (Padua U. ; INFN, Padua) ; Lenzi, S M (Padua U. ; INFN, Padua) ; Rudolph, D (Lund U.) ; Labiche, M (Daresbury) ; Pereira-Lopez, X (York U., England) ; Afara, S (King Saud U.) ; Ameil, F (Darmstadt, GSI) et al.
Electric quadrupole matrix elements, Mp , for the Jπ=2+→0+ , ΔT=0 , T=1 transitions across the A=46 isobaric multiplet 46 Cr- 46 V- 46 Ti have been measured at GSI with the FRS-LYCCA-AGATA setup. This allows direct insight into the isospin purity of the states of interest by testing the linearity of Mp with respect to Tz . [...]
2019 - 6 p.
- Published in : Phys. Lett. B 797 (2019) 134835
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6.
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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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7.
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Band-terminating states in 101 Ag
/ Sohler, D (Debrecen, Inst. Nucl. Res.) ; Timár, J (Debrecen, Inst. Nucl. Res.) ; Dombrádi, Zs (Debrecen, Inst. Nucl. Res.) ; Cederkäll, J (Royal Inst. Tech., Stockholm ; CERN) ; Huijnen, J (Uppsala U., TSL) ; Lipoglavšek, M (Stefan Inst., Ljubljana) ; Palacz, M (Warsaw U., Heavy Ion Lab) ; Atac, A (Uppsala U. (main)) ; Fahlander, C (Lund U.) ; Grawe, H (Darmstadt, GSI) et al.
Excited states of the neutron deficient 101 Ag nucleus have been investigated via the 50 Cr( 58 Ni, 3 p 1 α ) heavy-ion induced reaction at 261 MeV by use of in-beam spectroscopic methods. On the basis of the measured γγ -coincidence relations and angular distribution ratios high-spin bands have been extended up to I π =35/2 + , 45/2 (−) and (49/2 − ). [...]
2004 - 16 p.
- Published in : Nucl. Phys. A 733 (2004) 37-52
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8.
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Coulomb excitation of In-107
/ DiJulio, D.D (Lund U.) ; Albers, M (Cologne U.) ; Bildstein, V (Munich, Tech. U.) ; Blazhev, A (Cologne U.) ; Cederkall, J (Lund U.) ; Darby, I (Leuven U.) ; Davinson, T (Edinburgh U., Inst. Astron.) ; De Witte, H (Leuven U.) ; Diriken, J (Leuven U ; SCK-CEN, Mol) ; Ekstrom, A (Oslo U.) et al.
2013 - 4 p.
- Published in : Phys. Rev. C 87 (2013) 017301
APS published version, local copy: PDF;
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