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1.
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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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2.
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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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3.
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Reinterpretation of excited states in $^{212}$Po: Shell-model multiplets rather than $\alpha$-cluster states
/ Fernández, A (CSIC, Madrid) ; Jungclaus, A (CSIC, Madrid) ; Golubev, P (Lund U.) ; Rudolph, D (Lund U.) ; Sarmiento, L G (Lund U.) ; Gargano, A (INFN, Naples) ; Naïdja, H (Constantine U.) ; Astier, A (IJCLab, Orsay) ; Dupont, E (IJCLab, Orsay) ; Gadea, A (Valencia U., IFIC) et al.
A $\gamma$ -ray spectroscopic study of $^{212}$Po was performed at the Grand Accélérateur National d’Ions Lourds, using the inverse kinematics α-transfer reaction $^{12}$C($^{208}$Pb, $^{212}$Po) $^8$Be and the AGATA spectrometer. A careful analysis based on $\gamma \gamma$ coincidence relations allowed us to establish 14 new excited states in the energy range between 1.9 and 3.3 MeV. [...]
2021 - 19 p.
- Published in : Phys. Rev. C 104 (2021) 054316
Fulltext: PDF;
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4.
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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
Fulltext: PDF;
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5.
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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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6.
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EXILL—a high-efficiency, high-resolution setup for $\gamma$-spectroscopy at an intense cold neutron beam facility
/ Jentschel, M (Laue-Langevin Inst.) ; Blanc, A (Laue-Langevin Inst.) ; de France, G (GANIL) ; Köster, U (Laue-Langevin Inst.) ; Leoni, S (Milan U.) ; Mutti, P (Laue-Langevin Inst.) ; Simpson, G (LPSC, Grenoble) ; Soldner, T (Laue-Langevin Inst.) ; Ur, C (Padua U. ; Bucharest, IFIN-HH) ; Urban, W (Laue-Langevin Inst. ; Warsaw U.) et al.
In the EXILL campaign a highly efficient array of high purity germanium (HPGe) detectors was operated at the cold neutron beam facility PF1B of the Institut Laue-Langevin (ILL) to carry out nuclear structure studies, via measurements of γ-rays following neutron-induced capture and fission reactions. The setup consisted of a collimation system producing a pencil beam with a thermal capture equivalent flux of about 10(8) n s(−)(1)cm(−)(2) at the target position and negligible neutron halo. [...]
2017
- Published in : JINST 12 (2017) P11003
Fulltext: PDF;
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7.
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$_{36}^{96}$Kr$_{60}$–low-$Z$ boundary of the island of deformation at $N=60$
/ Dudouet, J (Lyon, IPN) ; Lemasson, A (GANIL) ; Duchêne, G (Strasbourg, IPHC) ; Rejmund, M (GANIL) ; Clément, E (GANIL) ; Michelagnoli, C (GANIL) ; Didierjean, F (Strasbourg, IPHC) ; Korichi, A (CSNSM, Orsay ; GANIL) ; Maquart, G (Lyon, IPN) ; Stezowski, O (Lyon, IPN) et al.
Prompt γ-ray spectroscopy of the neutron-rich 96Kr, produced in transfer- and fusion-induced fission reactions, has been performed using the combination of the Advanced Gamma Tracking Array and the VAMOSþþspectrometer. A second excited state, assigned to Jπ ¼ 4þ, is observed for the first time, and a previously reported level energy of the first 2þ excited state is confirmed. [...]
2017 - 6 p.
- Published in : Phys. Rev. Lett. 118 (2017) 162501
Fulltext: PDF;
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8.
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Experimental results of the annihilations P-P→K+K+2π
/ Armenteros, R ; Edwards, D N ; Jacobsen, T ; Montanet, E ; Vandermeulen, J ; d 'Andlau, Ch ; Astier, A ; Bâillon, P ; Cohen-ganouna, J ; Defoix, C et al.
4 p.
- Published in : : 1, pp. 605-608
Published version: PDF;
In : 12th International Conference on High-energy Physics, v.1 (Eng.), Dubna, Soviet Union, 5 - 15 Aug 1964, pp.605-608
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9.
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Study of a ($KK\pi$) enhancement in $KK3\pi$ annihilations
/ Armenteros, R (CERN) ; Edwards, D N (CERN) ; Jacobsen, T (CERN) ; Vandermeulen, A (CERN) ; Shapira, J (CERN) ; d'Andlau, C (CERN) ; Astier, A (CERN) ; Bâillon, P (CERN) ; Briand, H (CERN) ; Cohen-Ganouna, J (CERN) et al.
1966 - 2 p.
- Published in : : 1 (1966) , pp. 491-492
Published version: PDF;
In : 12th International Conference on High-energy Physics, v.1 (Eng.), Dubna, Soviet Union, 5 - 15 Aug 1964, pp.491-492
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10.
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Further study of the E-meson in antiproton-proton annihilations at rest
/ Baillon, P ; Edwards, D ; Maréchal, B ; Montanet, L ; Tomas, M ; d'Andlau, C ; Astier, A ; Cohen-Ganouna, J ; Della-Negra, M ; Wojcicki, S et al.
CERN-TC-PHYSICS-66-24.
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1966. - 40 p.
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