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1.
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Spectroscopy of Neutron Induced Reactions with the $\nu $-ball Spectrometer
/ Jovančević, N (Orsay, IPN ; U. Paris-Saclay) ; Lebois, M (Orsay, IPN ; U. Paris-Saclay) ; Wilson, J N (Orsay, IPN ; U. Paris-Saclay) ; Thisse, D (Orsay, IPN ; U. Paris-Saclay) ; Qi, L (Orsay, IPN ; U. Paris-Saclay) ; Matea, I (Orsay, IPN ; U. Paris-Saclay) ; Ibrahim, F (Orsay, IPN ; U. Paris-Saclay) ; Verney, D (Orsay, IPN ; U. Paris-Saclay) ; Babo, M (Orsay, IPN ; U. Paris-Saclay) ; Delafosse, C (Orsay, IPN ; U. Paris-Saclay) et al.
The $\nu$-ball is a high-efficiency hybrid spectrometer which consists of both germanium (Ge) detectors and associated anti-Compton BGO shields, coupled to lanthanum bromide (LaBr$_3$) detectors. The hybrid configuration provides a combination of both excellent energy and timing resolutions. [...]
Acta Physica Polonica B Editorial Office, 2019 - 8 p.
- Published in : Acta Phys. Pol. B 50 (2019) 297
In : Zakopane Conference on Nuclear Physics : Extremes of the Nuclear Landscape, Zakopane, Poland, 26 Aug - 2 Sep 2018, pp.297
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2.
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Testing ab initio nuclear structure in neutron-rich nuclei: lifetime measurements of second 2$^+$ states in $^{16}$C and $^{20}$O
/ Ciemala, M. (Cracow, INP) ; Ziliani, S. (Milan U. ; INFN, Milan) ; Crespi, F.C.L. (Milan U. ; INFN, Milan) ; Leoni, S. (Milan U. ; INFN, Milan) ; Fornal, B. (Cracow, INP) ; Maj, A. (Cracow, INP) ; Bednarczyk, P. (Cracow, INP) ; Benzoni, G. (INFN, Milan) ; Bracco, A. (Milan U. ; INFN, Milan) ; Boiano, C. (INFN, Milan) et al.
To test the predictive power of ab initio nuclear structure theory, the lifetime of the second 2+ state in neutron-rich 20O, tau(2+_2 ) = 150(+80-30) fs, and an estimate for the lifetime of the second 2+ state in 16C have been obtained, for the first time. The results were achieved via a novel Monte Carlo technique that allowed us to measure nuclear state lifetimes in the tens-to-hundreds femtoseconds range, by analyzing the Doppler-shifted gamma-transition line shapes of products of low-energy transfer and deep-inelastic processes in the reaction 18O (7.0 MeV/u) + 181Ta. [...]
arXiv:2002.04814.-
2020-02-28 - 7 p.
- Published in : Phys. Rev. C 101 (2020) 021303
Fulltext: PDF; Published fulltext: PhysRevC.101.021303 - PDF; 0144fdb9ec521f98f02c56efc9fa40a9 - PDF;
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3.
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Pseudospin Symmetry and Microscopic Origin of Shape Coexistence in the $^{78}$Ni Region: A Hint from Lifetime Measurements
/ Delafosse, C (Orsay, IPN) ; Verney, D (Orsay, IPN) ; Marević, P (Orsay, IPN ; CEA DAM) ; Gottardo, A (Orsay, IPN) ; Michelagnoli, C (GANIL) ; Lemasson, A (GANIL) ; Goasduff, A (INFN, Legnaro) ; Ljungvall, J (CSNSM, Orsay) ; Clément, E (GANIL) ; Korichi, A (CSNSM, Orsay) et al.
Lifetime measurements of excited states of the light $N=52$ isotones $^{88}$Kr, $^{86}$Se, and $^{84}$Ge have been performed, using the recoil distance Doppler shift method and VAMOS and AGATA spectrometers for particle identification and gamma spectroscopy, respectively. The reduced electric quadrupole transition probabilities $B(E2;2^+ \rightarrow 0^+)$ and $B(E2;4^+ \rightarrow 2^+)$ were obtained for the first time for the hard-to-reach $^{84}$Ge. [...]
2018 - 7 p.
- Published in : Phys. Rev. Lett. 121 (2018) 192502
Fulltext: PDF;
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4.
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Pygmy Gamow-Teller resonance in the N=50 region: New evidence from staggering of β -delayed neutron-emission probabilities
/ Verney, D (Orsay, IPN) ; Testov, D (Orsay, IPN ; Dubna, JINR) ; Ibrahim, F (Orsay, IPN) ; Penionzhkevich, Yu (Dubna, JINR ; Moscow Phys. Eng. Inst.) ; Roussière, B (Orsay, IPN) ; Smirnov, V (Dubna, JINR) ; Didierjean, F (Strasbourg, IPHC) ; Flanagan, K (U. Manchester) ; Franchoo, S (Orsay, IPN) ; Kuznetsova, E (Dubna, JINR) et al.
We report on the β-delayed neutron emission probability (P1n) measurements of the Ga82,83,84 (N=51,52,53) precursors performed in one single experiment using the He3 neutron-counter TETRA at the ALTO facility in Orsay. Altogether our results for the three A=82,83, and 84 Ga precursors point towards a sizable P1n staggering in the N=50 region, similar to the one already observed just after the N=28 shell closure in the K isotopes chain, hinting at a similar mechanism. [...]
2017 - 14 p.
- Published in : Phys. Rev. C 95 (2017) 054320
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5.
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The $^3$He long-counter TETRA at the ALTO ISOL facility
/ Testov, D (Orsay, IPN ; Dubna, JINR) ; Verney, D (Orsay, IPN) ; Roussière, B (Orsay, IPN) ; Bettane, J (Orsay, IPN) ; Didierjean, F (Strasbourg, IPHC) ; Flanagan, K (Manchester U.) ; Franchoo, S (Orsay, IPN) ; Ibrahim, F (Orsay, IPN) ; Kuznetsova, E (Orsay, IPN) ; Li, R (Orsay, IPN) et al.
A new β-decay station (BEDO) has been installed behind the PARRNe mass separator operated on-line at the electron-driven ALTO ISOL facility. The station is equipped with a movable tape collector allowing the creation of the radioactive sources of interest at the very center of a modular detection system. [...]
2016 - 8 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 815 (2016) 96-103
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6.
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Magnetism of an Excited Self-Conjugate Nucleus: Precise Measurement of the g Factor of the 21+ State in Mg24
/ Kusoglu, A ; Stuchbery, A E ; Georgiev, G ; Brown, B A ; Goasduff, A ; Atanasova, L ; Balabanski, D L ; Bostan, M ; Danchev, M ; Detistov, P et al.
A precise measurement of the g factor of the first-excited state in the self-conjugate (N=Z) nucleus Mg24 is performed by a new time-differential recoil-in-vacuum method based on the hyperfine field of hydrogenlike ions. Theory predicts that the g factors of such states, in which protons and neutrons occupy the same orbits, should depart from 0.5 by a few percent due to configuration mixing and meson-exchange effects. [...]
2015 - 5 p.
- Published in : Phys. Rev. Lett. 114 (2015) 062501
APS Open Access article: PDF; Fulltext: PDF;
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7.
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A dedicated decay-spectroscopy station for the collinear resonance ionization experiment at ISOLDE
/ Rajabali, M.M (Leuven U.) ; Billowes, J (Manchester U.) ; Bissell, M.L (Leuven U.) ; Cocolios, T.E (CERN) ; De Schepper, S (Leuven U.) ; Dewolf, K (Leuven U.) ; Flanagan, K.T (Manchester U.) ; Le Blanc, F (Orsay, IPN ; Orsay, LPT) ; Lynch, K.M (Manchester U ; CERN) ; Marsh, B.A (CERN) et al.
A new decay-spectroscopy station (DSS) has been developed to be coupled to the collinear resonance ionization spectroscopy (CRIS) beam line at CERN-ISOLDE. The system uses a rotatable wheel with ten 20@mg/cm^2 carbon foils as beam implantation sites for the efficient measurement of charged decay products. [...]
2013 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 707 (2013) 35-39
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8.
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A time projection chamber for the three-dimensional reconstruction of two-proton radioactivity events
/ Blank, B (Bordeaux U. ; CENBG, Gradignan) ; Hay, L (Bordeaux U. ; CENBG, Gradignan) ; Borcea, C (Bordeaux U. ; Bucharest, IFIN-HH ; CENBG, Gradignan) ; Leblanc, S (Bordeaux U. ; CENBG, Gradignan) ; Giovinazzo, J (Bordeaux U. ; CENBG, Gradignan) ; Rebii, A (Bordeaux U. ; CENBG, Gradignan) ; List, S (Bordeaux U. ; CENBG, Gradignan) ; Marchand, C (Bordeaux U. ; CENBG, Gradignan) ; Dossat, C (Bordeaux U. ; DAPNIA, Saclay ; CENBG, Gradignan) ; Delalee, F (Bordeaux U. ; CENBG, Gradignan) et al.
Two-proton radioactivity was observed in 2002 in the decay of Fe-45. However, the experiments performed at that time did not allow the observation of the two protons directly. [...]
2010
- Published in : Nucl. Instrum. Methods Phys. Res., A 613 (2010) 65-78
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9.
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Precise half-life measurements for $^{38}$Ca and $^{39}$Ca
/ Blank, B (CENBG, Gradignan) ; Giovinazzo, J (CENBG, Gradignan) ; Demonchy, C-E (CENBG, Gradignan) ; Borge, M J G (Madrid, Inst. Estructura Materia) ; Matea, I (CENBG, Gradignan) ; Munoz, F (CENBG, Gradignan) ; Huikari, J (CENBG, Gradignan) ; Dominguez-Reyes, R (Madrid, Inst. Estructura Materia) ; Plaisir, C (CENBG, Gradignan) ; Sturm, S (Mainz U.) et al.
The half-lives of Ca-38 and Ca-39 have been measured at ISOLDE of CERN. The REXTRAP facility was used to prepare ultra-clean samples of radioactive nuclei for precision decay spectroscopy. [...]
2010
- Published in : Eur. Phys. J. A 44 (2010) 363-372
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10.
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A time projection chamber to study two-proton radioactivity
/ Blank, B ; Audirac, L ; Borcea, C ; Canchel, G ; Delalee, F ; Demonchy, C E ; Dossat, C ; Giovinazzo, J ; Grévy, S ; Hay, L et al.
2008
- Published in : Nucl. Instrum. Methods Phys. Res., B 266 (2008) 4606-4611
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