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Coulomb excitation of Zn74,76
/ ISOLDE Collaboration
The first experiment using radioactive beams post-accelerated by the HIE-ISOLDE facility has enabled to obtain a precise set of B(E2) transition probabilities in neutron-rich Zn74,76 isotopes. The resulting B(E2; 21+→01+) values are consistent with those determined in earlier REX-ISOLDE measurements. [...]
2023 - 17 p.
- Published in : Phys. Rev. C 108 (2023) 044305
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Signatures of enhanced octupole correlations at high spin in $^{136}\mathrm{Nd}$
/ Petrache, C M (CSNSM, Orsay) ; Minkov, N (Sofiya, Inst. Nucl. Res.) ; Nakatsukasa, T (Tsukuba U. ; Nishina Ctr., RIKEN) ; Lv, B F (CSNSM, Orsay ; Lanzhou, Inst. Modern Phys. ; Lanzhou U.) ; Astier, A (CSNSM, Orsay) ; Dupont, E (CSNSM, Orsay) ; Zheng, K K (CSNSM, Orsay) ; Greenlees, P (Jyvaskyla U.) ; Badran, H (Jyvaskyla U.) ; Calverley, T (Jyvaskyla U. ; Liverpool U.) et al.
Experimental signatures of moderately enhanced octupole correlations at high spin in $^{136}\mathrm{Nd}$ are indicated for the first time. The extracted dipole moments of two negative-parity bands are only two times smaller than those of the lanthanide nuclei with $N≈90$ which present well-established octupole correlations. [...]
2020 - 8 p.
- Published in : Phys. Rev. C 102 (2020) 014311
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In-beam γ -ray and electron spectroscopy of $^{249,251}$Md
/ Briselet, R. (IRFU, Saclay) ; Theisen, Ch. (IRFU, Saclay) ; Sulignano, B. (IRFU, Saclay) ; Airiau, M. (IRFU, Saclay) ; Auranen, K. (Jyvaskyla U.) ; Cox, D.M. (Jyvaskyla U. ; Liverpool U.) ; Déchery, F. (IRFU, Saclay ; Strasbourg, IPHC) ; Drouart, A. (IRFU, Saclay) ; Favier, Z. (IRFU, Saclay) ; Gall, B. (Strasbourg, IPHC) et al.
The odd-$Z$ $^{251}$Md nucleus was studied using combined $\gamma$-ray and conversion-electron in-beam spectroscopy. Besides the previously observed rotational band based on the $[521]1/2^-$ configuration, another rotational structure has been identified using $\gamma$-$\gamma$ coincidences. [...]
arXiv:2001.10235.-
2020-07-09 - 16 p.
- Published in : Phys. Rev. C 102 (2020) 014307
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Evidence against the wobbling nature of low-spin bands in $^{135}$Pr
/ Lv, B.F. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Petrache, C.M. (IJCLab, Orsay) ; Lawrie, E.A. (iThemba LABS ; Western Cape U.) ; Guo, S. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Astier, A. (IJCLab, Orsay) ; Dupont, E. (IJCLab, Orsay) ; Zheng, K.K. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS ; IJCLab, Orsay) ; Ong, H.J. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Wang, J.G. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) ; Zhou, X.H. (Lanzhou, Inst. Modern Phys. ; Beijing, GUCAS) et al.
The electromagnetic character of the $\Delta I=1$ transitions connecting the one- to zero-phonon and the two- to one-phonon wobbling bands should be dominated by an $E2$ component, due to the collective motion of the entire nuclear charge. In the present work it is shown, based on combined angular correlation and linear polarization measurements, that the mixing ratios of all analyzed connecting transitions between low-lying bands in $^{135}$Pr interpreted as zero-, one-, and two-phonon wobbling bands, have absolute values smaller than one. [...]
arXiv:2106.04879.-
2022-01-10 - 6 p.
- Published in : Phys. Lett. B 824 (2022) 136840
Fulltext: 1-s2.0-S0370269321007802-main - PDF; 2106.04879 - PDF;
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Multiple chiral bands in $^{137}$Nd
/ Petrache, C.M. (CSNSM, Orsay) ; Lv, B.F. (Lanzhou, Inst. Modern Phys.) ; Chen, Q.B. (Munich, Tech. U.) ; Meng, J. (Peking U., SKLNPT ; Kyoto U., Yukawa Inst., Kyoto) ; Astier, A. (CSNSM, Orsay) ; Dupont, E. (CSNSM, Orsay) ; Zheng, K.K. (CSNSM, Orsay) ; Greenlees, P.T. (Jyvaskyla U.) ; Badran, H. (Jyvaskyla U.) ; Calverley, T. (Jyvaskyla U. ; Liverpool U.) et al.
Two new bands have been identified in $^{137}$Nd from a high-statistics JUROGAM II gamma-ray spectroscopy experiment. Constrained density functional theory and particle rotor model calculations are used to assign configurations and investigate the band properties, which are well described and understood. [...]
arXiv:2008.07925.-
2020-08-18 - 10 p.
- Published in : Eur. Phys. J. A 56 (2020) 208
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Decay studies of the long-lived states in $^{186}$Tl
/ IDS Collaboration
Decay spectroscopy of the long-lived states in $^{186}$Tl has been performed at the ISOLDE Decay Station at ISOLDE, CERN. The $\alpha$ decay from the low-spin ($2^−$) state in $^{186}$Tl was observed for the first time and a half-life of 3.4$^{+0.5}_{−0.4}$ s was determined. [...]
arXiv:2006.02161.-
2020-08-19 - 9 p.
- Published in : Physical Review C 102 (2020) 024322
Fulltext: 2006.02161 - PDF; PhysRevC.102.024322 - PDF;
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Evolution from $\gamma$-soft to stable triaxiality in $^{136}\mathrm{Nd}$ as a prerequisite of chirality
/ Lv, B F (CSNSM, Orsay ; Lanzhou, Inst. Modern Phys.) ; Petrache, C M (CSNSM, Orsay) ; Astier, A (CSNSM, Orsay) ; Dupont, E (CSNSM, Orsay) ; Lopez-Martens, A (CSNSM, Orsay) ; Greenlees, P T (Jyvaskyla U.) ; Badran, H (Jyvaskyla U.) ; Calverley, T (Jyvaskyla U. ; Liverpool U.) ; Cox, D M (Jyvaskyla U. ; Lund U.) ; Grahn, T (Jyvaskyla U.) et al.
The level structure of Nd136 has been investigated using the Mo100(Ar40,4n) reaction and the JUROGAM II+RITU+GREAT setup. The level scheme has been extended significantly. [...]
2018 - 22 p.
- Published in : Phys. Rev. C 98 (2018) 044304
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Enhanced Quadrupole and Octupole Strength in Doubly Magic $^{132}$Sn
/ Rosiak, D. (Cologne U.) ; Seidlitz, M. (Cologne U.) ; Reiter, P. (Cologne U.) ; Naïdja, H. (Constantine U. ; Strasbourg, IPHC) ; Tsunoda, Y. (Tokyo U., CNS) ; Togashi, T. (Tokyo U., CNS) ; Nowacki, F. (Strasbourg, IPHC) ; Otsuka, T. (Michigan State U., NSCL ; KU Leuven, Dept. Phys. Astron. ; Tokyo U., CNS ; Tokyo U.) ; Colò, G. (INFN, Milan ; Milan U.) ; Arnswald, K. (Cologne U.) et al.
/MINIBALL ; HIE-ISOLDE
The first $2^+$ and $3^-$ states of the doubly magic nucleus $^{132}$Sn are populated via safe Coulomb excitation employing the recently commissioned HIE-ISOLDE accelerator at CERN in conjunction with the highly efficient MINIBALL array. The $^{132}$Sn ions are accelerated to an energy of 5.49 MeV/nucleon and impinged on a $^{206}$Pb target. [...]
2018-12-18 - 6 p.
- Published in : 10.1103/PhysRevLett.121.252501
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