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1.
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Low-spin states in $^{80}$Ge populated in the $\beta$ decay of the $^{80}$Ga $3^-$ isomer
/ Sekal, S (Algiers U. Sci. Tech. ; CERN) ; Fraile, L M (Madrid U.) ; Lică, R (CERN ; Bucharest, IFIN-HH) ; Borge, M J G (Madrid, Inst. Estructura Materia) ; Walters, W B (Maryland U., Dept. Chem.) ; Aprahamian, A (Notre Dame U.) ; Benchouk, C (Algiers U. Sci. Tech.) ; Bernards, C (Yale U. (main) ; Cologne U.) ; Briz, J A (Madrid, Inst. Estructura Materia) ; Bucher, B (Idaho Natl. Lab.) et al.
The structure of
$^{80}$Ge has been investigated at the ISOLDE facility at CERN. A previous study reported for the first time a low-lying $0^+_2$ intruder state at 639 keV, based on the coincidence with a previously unobserved 1764-keV $γ$ ray, and suggested it as evidence for shape coexistence in $^{80}$Ge. [...]
2021 - 12 p.
- Published in : Phys. Rev. C 104 (2021) 024317
Fulltext: PDF;
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2.
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Search for the $^{73}\mathrm{Ga}$ ground-state doublet splitting in the $\beta$ decay of $^{73}\mathrm{Zn}$
/ Vedia, V (UCM, Madrid, Dept. Phys.) ; Paziy, V (UCM, Madrid, Dept. Phys.) ; Fraile, L M (UCM, Madrid, Dept. Phys.) ; Mach, H (UCM, Madrid, Dept. Phys. ; NCBJ, Swierk) ; Walters, W B (Maryland U., Dept. Chem.) ; Aprahamian, A (Notre Dame U.) ; Bernards, C (Cologne U. ; Yale U. (main)) ; Briz, J A (Madrid, Inst. Estructura Materia) ; Bucher, B (Notre Dame U. ; LLNL, Livermore) ; Chiara, C J (Maryland U., Dept. Chem. ; Argonne, PHY) et al.
The existence of two close-lying nuclear states in $^{73}$Ga has recently been experimentally determined: a 1/2$^−$ spin-parity for the ground state was measured in a laser spectroscopy experiment, while a J$^{\pi} = 3/2^−$ level was observed in transfer reactions. This scenario is supported by Coulomb excitation studies, which set a limit for the energy splitting of 0.8 keV. [...]
2017 - 13 p.
- Published in : Phys. Rev. C 96 (2017) 034311
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3.
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Search for shape-coexisting 0$^+$ states in $^{66}$Ni from lifetime measurements
/ Olaizola, B (UCM, Madrid, Dept. Phys.) ; Fraile, L M (UCM, Madrid, Dept. Phys.) ; Mach, H (UCM, Madrid, Dept. Phys. ; NCBJ, Warsaw) ; Poves, A (Madrid, Autonoma U.) ; Nowacki, F (Strasbourg, IPHC) ; Aprahamian, A (Notre Dame U.) ; Briz, J A (Madrid, Inst. Estructura Materia) ; Cal-González, J (UCM, Madrid, Dept. Phys.) ; Ghiţa, D (Bucharest, IFIN-HH) ; Köster, U (Laue-Langevin Inst.) et al.
The lifetime of the 0$_3^+$ state in $^{66}$Ni, two neutrons below the $N=40$ subshell gap, has been measured. The transition $B(E2;0_3^+ \rightarrow 2_1^+)$ is one of the most hindered E2 transitions in the Ni isotopic chain and it implies that, unlike $^{68}$Ni, there is a spherical structure at low excitation energy. [...]
2017 - 6 p.
- Published in : Phys. Rev. C 95 (2017) 061303
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4.
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Beta decay of $^{66}$Mn to the $N = 40$ nucleus $^{66}$Fe
/ Olaizola, B (UCM, Madrid, Dept. Phys.) ; Fraile, L M (UCM, Madrid, Dept. Phys.) ; Mach, H (UCM, Madrid, Dept. Phys. ; NCBJ, Swierk) ; Poves, A (Madrid, Autonoma U. ; Madrid, IFT) ; Aprahamian, A (Notre Dame U.) ; Briz, J A (Madrid, Inst. Estructura Materia) ; Cal-González, J (UCM, Madrid, Dept. Phys.) ; Ghiţa, D (Bucharest, IFIN-HH) ; Köster, U (Laue-Langevin Inst.) ; Kurcewicz, W (Warsaw U.) et al.
The low energy structure of 66Fe was studied by means of γ- and fast-timing spectroscopy at the ISOLDE/CERN facility. The level scheme of 66Fe populated following the decay of 66Mn was established. [...]
2017 - 19 p.
- Published in : J. Phys. G 44 (2017) 125103
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5.
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On the enhanced E1 transitions in the K = 3/2 parity doublet band in$^{223}$Ra
/ Mach, H (Warsaw, Inst. Nucl. Studies ; Uppsala U.) ; Lindroth, A (Uppsala U.) ; Ruchowska, E (Warsaw, Inst. Nucl. Studies) ; Kvasil, J (Charles U.) ; Fogelberg, B (Uppsala U.) ; Gulda, K (Warsaw, Inst. Nucl. Studies ; Warsaw U.) ; Aas, A J (Oslo U.) ; Borge, M J G (CSIC, Madrid) ; Grant, I S (Manchester U.) ; Hagebø, E (Oslo U.) et al.
We have applied the fast timing $ \beta\gamma\gamma (t)$ technique to remeasure lifetimes of selected states in$^{223}$Ra populated in the $ \beta^{-}$ decay of$^{223}$Fr. $ T_{1/2}=587(12)$ ps and 210(13)ps have been obtained for the $ 3/2^{-}$ and $ 5/2^{-}$ states at 50.1 and 79.7 keV, that are more accurate than the previous values of 630(70)ps and 166(55)ps, respectively. [...]
2016
- Published in : Eur. Phys. J. A 52 (2016) 172
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6.
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High-sensitivity study of levels in $^{30}Al$ following β decay of $^{30}Mg$
/ Olaizola, B (UCM, Madrid, Dept. Phys.) ; Mach, H (UCM, Madrid, Dept. Phys.) ; Fraile, L M (UCM, Madrid, Dept. Phys.) ; Benito, J (UCM, Madrid, Dept. Phys.) ; Borge, M J G (CSIC, Madrid) ; Boutami, R (UCM, Madrid, Dept. Phys.) ; Butler, P A (Liverpool U.) ; Dlouhy, Z (Rez, Nucl. Phys. Inst.) ; Fynbo, H O U (Aarhus U.) ; Hoff, P (Oslo U.) et al.
γ-ray and fast-timing spectroscopy were used to study levels in Al30 populated following the β− decay of Mg30. Five new transitions and three new levels were located in Al30. [...]
2016 - 7 p.
- Published in : Phys. Rev. C 94 (2016) 054318
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7.
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Beta-decay measurements of neutron-rich thallium, lead, and bismuth by means of resonant laser ionisation
/ Franchoo, S (Mainz U. ; CERN) ; De Witte, H (Leuven U.) ; Andreyev, A N (U. Liverpool (main)) ; Cederka¨ll, J (CERN) ; Dean, S (Leuven U.) ; De Smet, A (Leuven U.) ; Eeckhaudt, S (Leuven U.) ; Fedorov, D V (St. Petersburg, INP) ; Fedosseev, V N (CERN) ; Go´rska, M (Leuven U.) et al.
/ISOLDE
Neutron-rich thallium, lead, and bismuth isotopes were investigated at the ISOLDE facility. After mass separation and resonant laser ionisation of the produced activity, new spectroscopic data were obtained for 215,218 Bi and 215 Pb. [...]
2004 - 4 p.
- Published in : Nucl. Phys. A 734 (2004) 449-452
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8.
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Fast-timing study in the 78Ni region: $\beta$-Decay of 81Zn
/ Paziy, V (Madrid U.) ; Mach, H (Madrid U. ; Warsaw, Inst. Nucl. Studies) ; Fraile, L M (Madrid U.) ; Aprahamian, A (Notre Dame U.) ; Bernards, C (Yale U. ; Cologne U.) ; Briz, J A (Madrid U.) ; Bucher, B (Notre Dame U.) ; Chiara, C J (Argonne, PHY ; Maryland U., Dept. Chem.) ; Dlouhý, Z (Rez, Nucl. Phys. Inst.) ; Gheorghe, I (Bucharest, IFIN-HH) et al.
The neutron-rich nucleus $^{81}$Ga was populated from the $\beta$-decay of $^{81}$Zn produced at the ISOLDE (CERN) facility. The analysis of $\beta$-gated $\gamma$-ray singles and $\gamma-\gamma$ coincidences permits to extend significantly the level scheme of $^{81}$Ga as well as to provide a new half-life for $^{81}$Zn. [...]
2015 - 4 p.
- Published in : JPS Conf. Proc. 6 (2015) 030009
In : 2nd Conference on Advances in Radioactive Isotope Science, Tokyo, Japan, 1 - 6 Jun 2014, pp.030009
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9.
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Fast timing study of the $\beta$−Decay of $^{63}$Mn to $^{63}$Fe
/ Olaizola, B (Madrid U.) ; Fraile, L M (Madrid U.) ; Mach, H (Madrid U. ; Warsaw, Inst. Nucl. Studies) ; Briz, J A (Madrid, Inst. Estructura Materia) ; Cal-González, J (Madrid U.) ; Ghita, D (Bucharest, IFIN-HH) ; Köster, U (Laue-Langevin Inst.) ; Kurcewicz, W (Warsaw U.) ; Lesher, S R (Notre Dame U. ; Wisconsin U., La Crosse) ; Pauwels, D (Leuven U.) et al.
The $\beta^−$ decay of $^{63}$Mn to $^{63}$Fe has been studied in an experiment at ISOLDE, CERN. The previously known $^{63}$Fe level scheme has been confirmed and greatly expanded, to a total of 31 levels and 73 $\gamma$ lines. [...]
2015 - 4 p.
- Published in : JPS Conf. Proc. 6 (2015) 030006
In : 2nd Conference on Advances in Radioactive Isotope Science, Tokyo, Japan, 1 - 6 Jun 2014, pp.030006
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10.
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Experimental studies of single-particle features and collectivity above $^{132}$Sn
/ Fraile, L M (CERN ; UCM, Madrid) ; Mach, H ; Blazhev, A ; Boelaert, N ; Borje, M J G ; Boutami, R ; Bradlev, H ; Braun, N ; Brown, A ; Butler, P A et al.
2008
In : 23rd International Nuclear Physics Conference, Tokyo, Japan, 3 - 8 Jun 2007, pp.218-220 (vol.2)
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