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1,410 results on '"DE FRANCE, G."'

51. $\gamma$-ray linear polarization measurements and $(g_{9/2})^{-3}$ neutron alignment in $^{91}$Ru

Author

Zheng, Y., de France, G., Clément, E., Dijon, A., Cederwall, B., Wadsworth, R., Bäck, T., Moradi, F. Ghazi, Jaworski, G., Nyakó, B. M., Nyberg, J., Palacz, M., Al-Azri, H., de Angelis, G., Atac, A., Aktaş, Ö., Bhattacharyya, S., Brock, T., Davies, P. J., Di Nitto, A., Dombradi, Zs., Gadea, A., Gal, J., Joshi, P., Juhasz, K., Julin, R., Jungclaus, A., Kalinka, G., Kownacki, J., La Rana, G., Lenzi, S. M., Molnar, J., Moro, R., Napoli, D. R., Singh, B. S. Nara, Persson, A., Recchia, F., Sandzelius, M., Scheurer, J. -N., Sletten, G., Sohler, D., Söderström, P. -A., Taylor, M. J., Timar, J., Valiente-Dobon, J. J., and Vardaci, E.

Subjects
Nuclear Experiment
Abstract

Linear polarization measurements have been performed for $\gamma$-rays in $^{91}$Ru produced with the $^{58}$Ni($^{36}$Ar, $2p1n$$\gamma$)$^{91}$Ru reaction at a beam energy of 111 MeV. The EXOGAM Ge clover array has been used to measure the $\gamma$-$\gamma$ coincidences, $\gamma$-ray linear polarization and $\gamma$-ray angular distributions. The polarization sensitivity of the EXOGAM clover detectors acting as Compton polarimeters has been determined in the energy range 0.3$-$1.3 MeV. Several transitions have been observed for the first time. Measurements of linear polarization and angular distribution have led to the firm assignments of spin differences and parity of high-spin states in $^{91}$Ru. More specifically, calculations using a semi-empirical shell model were performed to understand the structures of the first and second (21/2$^{+}$) and (17/2$^{+}$) levels. The results are in good agreement with the experimental data, supporting the interpretation of the non yrast (21/2$^{+}$) and (17/2$^{+}$) states in terms of the $J_{\rm max}$ and $J_{\rm max}-2$ members of the seniority-three $\nu(g_{9/2})^{-3}$ multiplet., Comment: 19 pages, 8 figures, 2 tables

Published
2013
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52. Search for Superscreening effect in Superconductor

Author

Ujic, P., Santos, F. de Oliveira, Lewitowicz, M., Achouri, L., Assié, M., Bastin, B., Borcea, C., Borcea, R., Buta, A., Coc, A., De France, G., Kamalou, O., Kiener, J., Lepailleur, A., Meot, V., Pautrat, A., Laurent, M. G. Saint, Sorlin, O., Stanoiu, M., and Tatischef, V.

Subjects
Nuclear Experiment
Abstract

The decay of $^{19}$O($\beta^-$) and $^{19}$Ne($\beta^+$) implanted in niobium in its superconducting and metallic phase was measured using purified radioactive beams produced by the SPIRAL/GANIL facility. Half-lives and branching ratios measured in the two phases are consistent within one-sigma error bar. This measurement casts strong doubts on the predicted strong electron screening in superconductor, the so-called superscreening. The measured difference in screening potential energy is 110(90) eV for $^{19}$Ne and 400(320) eV for $^{19}$O. Precise determinations of the half-lives were obtained for $^{19}$O: 26.476(9) s and $^{19}$Ne: 17.254(5) s., Comment: 4 pages, 3 figures, accepted for publication in Physical Review Letters

Published
2012
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53. Neutron detection and [formula omitted]-ray suppression using artificial neural networks with the liquid scintillators BC-501A and BC-537

Author

Söderström, P.-A., Jaworski, G., Valiente Dobón, J.J., Nyberg, J., Agramunt, J., de Angelis, G., Carturan, S., Egea, J., Erduran, M.N., Ertürk, S., de France, G., Gadea, A., Goasduff, A., González, V., Hadyńska-Klȩk, K., Hüyük, T., Modamio, V., Moszynski, M., Di Nitto, A., Palacz, M., Pietralla, N., Sanchis, E., Testov, D., Triossi, A., and Wadsworth, R.

Published
2019
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54. Discovery of a new isomeric state in $^{68}$Ni: Evidence for a highly-deformed proton intruder state

Author

Dijon, A., Clément, E., De France, G., De Angelis, G., Duchêne, G., Dudouet, J., Franchoo, S., Gadea, A., Gottardo, A., Hüyük, T., Jacquot, B., Kusoglu, A., Lebhertz, D., Lehaut, G., Martini, M., Napoli, D. R., Nowacki, F., Péru, S., Poves, A., Recchia, F., Redon, N., Sahin, E., Schmitt, C., Sferrazza, M., Sieja, K., Stezowski, O., Valiente-Dobon, J. J., Vancraeyenest, A., and Zheng, Y.

Subjects
Nuclear Experiment
Abstract

We report on the observation of a new isomeric state in $^{68}$Ni. We suggest that the newly observed state at 168(1) keV above the first 2$^+$ state is a $\pi(2p-2h)$ 0$^{+}$ state across the major Z=28 shell gap. Comparison with theoretical calculations indicates a pure proton intruder configuration and the deduced low-lying structure of this key nucleus suggests a possible shape coexistence scenario involving a highly deformed state., Comment: 5 pages, 3 figures, accepted for publication in Physical Review C

Published
2012
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55. AGATA - Advanced Gamma Tracking Array

Author

Akkoyun, S., Algora, A., Alikhani, B., Ameil, F., de Angelis, G., Arnold, L., Astier, A., Ataç, A., Aubert, Y., Aufranc, C., Austin, A., Aydin, S., Azaiez, F., Badoer, S., Balabanski, D. L., Barrientos, D., Baulieu, G., Baumann, R., Bazzacco, D., Beck, F. A., Beck, T., Bednarczyk, P., Bellato, M., Bentley, M. A., Benzoni, G., Berthier, R., Berti, L., Beunard, R., Bianco, G. Lo, Birkenbach, B., Bizzeti, P. G., Bizzeti-Sona, A. M., Blanc, F. Le, Blasco, J. M., Blasi, N., Bloor, D., Boiano, C., Borsato, M., Bortolato, D., Boston, A. J., Boston, H. C., Bourgault, P., Boutachkov, P., Bouty, A., Bracco, A., Brambilla, S., Brawn, I. P., Brondi, A., Broussard, S., Bruyneel, B., Bucurescu, D., Burrows, I., Bürger, A., Cabaret, S., Cahan, B., Calore, E., Camera, F., Capsoni, A., Carrió, F., Casati, G., Castoldi, M., Cederwall, B., Cercus, J. -L., Chambert, V., Chambit, M. El, Chapman, R., Charles, L., Chavas, J., Clément, E., Cocconi, P., Coelli, S., Coleman-Smith, P. J., Colombo, A., Colosimo, S., Commeaux, C., Conventi, D., Cooper, R. J., Corsi, A., Cortesi, A., Costa, L., Crespi, F. C. L., Cresswell, J. R., Cullen, D. M., Curien, D., Czermak, A., Delbourg, D., Depalo, R., Descombes, T., Désesquelles, P., Detistov, P., Diarra, C., Didierjean, F., Dimmock, M. R., Doan, Q. T., Domingo-Pardo, C., Doncel, M., Dorangeville, F., Dosme, N., Drouen, Y., Duchêne, G., Dulny, B., Eberth, J., Edelbruck, P., Egea, J., Engert, T., Erduran, M. N., Ertürk, S., Fanin, C., Fantinel, S., Farnea, E., Faul, T., Filliger, M., Filmer, F., Finck, Ch., de France, G., Gadea, A., Gast, W., Geraci, A., Gerl, J., Gernhäuser, R., Giannatiempo, A., Giaz, A., Gibelin, L., Givechev, A., Goel, N., González, V., Gottardo, A., Grave, X., Grȩbosz, J., Griffiths, R., Grint, A. N., Gros, P., Guevara, L., Gulmini, M., Görgen, A., Ha, H. T. M., Habermann, T., Harkness, L. J., Harroch, H., Hauschild, K., He, C., Hernández-Prieto, A., Hervieu, B., Hess, H., Hüyük, T., Ince, E., Isocrate, R., Jaworski, G., Johnson, A., Jolie, J., Jones, P., Jonson, B., Joshi, P., Judson, D. S., Jungclaus, A., Kaci, M., Karkour, N., Karolak, M., Kaşkaş, A., Kebbiri, M., Kempley, R. S., Khaplanov, A., Klupp, S., Kogimtzis, M., Kojouharov, I., Korichi, A., Korten, W., Kröll, Th., Krücken, R., Kurz, N., Ky, B. Y., Labiche, M., Lafay, X., Lavergne, L., Lazarus, I. H., Leboutelier, S., Lefebvre, F., Legay, E., Legeard, L., Lelli, F., Lenzi, S. M., Leoni, S., Lermitage, A., Lersch, D., Leske, J., Letts, S. C., Lhenoret, S., Lieder, R. M., Linget, D., Ljungvall, J., Lopez-Martens, A., Lotodé, A., Lunardi, S., Maj, A., van der Marel, J., Mariette, Y., Marginean, N., Marginean, R., Maron, G., Mather, A. R., Mȩczyński, W., Mendéz, V., Medina, P., Melon, B., Menegazzo, R., Mengoni, D., Merchan, E., Mihailescu, L., Michelagnoli, C., Mierzejewski, J., Milechina, L., Million, B., Mitev, K., Molini, P., Montanari, D., Moon, S., Morbiducci, F., Moro, R., Morrall, P. S., Möller, O., Nannini, A., Napoli, D. R., Nelson, L., Nespolo, M., Ngo, V. L., Nicoletto, M., Nicolini, R., Noa, Y. Le, Nolan, P. J., Norman, M., Nyberg, J., Obertelli, A., Olariu, A., Orlandi, R., Oxley, D. C., Özben, C., Ozille, M., Oziol, C., Pachoud, E., Palacz, M., Palin, J., Pancin, J., Parisel, C., Pariset, P., Pascovici, G., Peghin, R., Pellegri, L., Perego, A., Perrier, S., Petcu, M., Petkov, P., Petrache, C., Pierre, E., Pietralla, N., Pietri, S., Pignanelli, M., Piqueras, I., Podolyak, Z., Pouhalec, P. Le, Pouthas, J., Pugnére, D., Pucknell, V. F. E., Pullia, A., Quintana, B., Raine, R., Rainovski, G., Ramina, L., Rampazzo, G., La Rana, G., Rebeschini, M., Recchia, F., Redon, N., Reese, M., Reiter, P., Regan, P. H., Riboldi, S., Richer, M., Rigato, M., Rigby, S., Ripamonti, G., Robinson, A. P., Robin, J., Roccaz, J., Ropert, J. -A., Rossé, B., Alvarez, C. Rossi, Rosso, D., Rubio, B., Rudolph, D., Saillant, F., Şahin, E., Salomon, F., Salsac, M. -D., Salt, J., Salvato, G., Sampson, J., Sanchis, E., Santos, C., Schaffner, H., Schlarb, M., Scraggs, D. P., Seddon, D., Şenyiğit, M., Sigward, M. -H., Simpson, G., Simpson, J., Slee, M., Smith, J. F., Sona, P., Sowicki, B., Spolaore, P., Stahl, C., Stanios, T., Stefanova, E., Stézowski, O., Strachan, J., Suliman, G., Söderström, P. -A., Tain, J. L., Tanguy, S., Tashenov, S., Theisen, Ch., Thornhill, J., Tomasi, F., Toniolo, N., Touzery, R., Travers, B., Triossi, A., Tripon, M., Tun-Lanoë, K. M. M., Turcato, M., Unsworth, C., Ur, C. A., Valiente-Dobon, J. J., Vandone, V., Vardaci, E., Venturelli, R., Veronese, F., Veyssiere, Ch., Viscione, E., Wadsworth, R., Walker, P. M., Warr, N., Weber, C., Weisshaar, D., Wells, D., Wieland, O., Wiens, A., Wittwer, G., Wollersheim, H. J., Zocca, F., Zamfir, N. V., Ziȩbliński, M., and Zucchiatti, A.

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

The Advanced GAmma Tracking Array (AGATA) is a European project to develop and operate the next generation gamma-ray spectrometer. AGATA is based on the technique of gamma-ray energy tracking in electrically segmented high-purity germanium crystals. This technique requires the accurate determination of the energy, time and position of every interaction as a gamma ray deposits its energy within the detector volume. Reconstruction of the full interaction path results in a detector with very high efficiency and excellent spectral response. The realization of gamma-ray tracking and AGATA is a result of many technical advances. These include the development of encapsulated highly-segmented germanium detectors assembled in a triple cluster detector cryostat, an electronics system with fast digital sampling and a data acquisition system to process the data at a high rate. The full characterization of the crystals was measured and compared with detector-response simulations. This enabled pulse-shape analysis algorithms, to extract energy, time and position, to be employed. In addition, tracking algorithms for event reconstruction were developed. The first phase of AGATA is now complete and operational in its first physics campaign. In the future AGATA will be moved between laboratories in Europe and operated in a series of campaigns to take advantage of the different beams and facilities available to maximize its science output. The paper reviews all the achievements made in the AGATA project including all the necessary infrastructure to operate and support the spectrometer., Comment: This version contains a correction of a typing error in the caption of Fig. 2. The DOI to the article published in Nucl. Instr. Meth A was also added

Published
2011
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56. Lifetime measurements in $^{63}$Co and $^{65}$Co

Author

Dijon, A., Clément, E., De France, G., Van Isacker, P., Ljungvall, J., Görgen, A., Obertelli, A., Korten, W., Gadea, A., Gaudefroy, L., Hackstein, M., Mengoni, D., Pissulla, Th., Recchia, F., Rejmund, M., Rother, W., Sahin, E., Schmitt, C., Shrivastava, A., Valiente-Dobon, J. J., Zell, K. O., and Zielinska, M.

Subjects
Nuclear Experiment
Abstract

Lifetimes of the $9/2^-_1$ and $3/2^-_1$ states in $^{63}$Co and the $9/2^-_1$ state in $^{65}$Co were measured using the recoil distance Doppler shift and the differential decay curve methods. The nuclei were populated by multi-nucleon transfer reactions in inverse kinematics. Gamma rays were measured with the EXOGAM Ge array and the recoiling fragments were fully identified using the large-acceptance VAMOS spectrometer. The E2 transition probabilities from the $3/2^-_1$ and $9/2^-_1$ states to the $7/2^-$ ground state could be extracted in $^{63}$Co as well as an upper limit for the $9/2^-_1\rightarrow7/2^-_1$ $B$(E2) value in $^{65}$Co. The experimental results were compared to large-scale shell-model calculations in the $pf$ and $pfg_{9/2}$ model spaces, allowing to draw conclusions on the single-particle or collective nature of the various states., Comment: 8 pages, 8 figures, 1 table, accepted for publication in Physical Review C

Published
2011
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57. First direct lifetime measurement of the 2+1 state in 72,74Zn: new evidence for shape transition between N = 40 and N = 42 close to Z = 28

Author

Niikura, M., Mouginot, B., Franchoo, S., Matea, I., Stefan, I., Verney, D., Azaiez, F., Assie, M., Bednarczyk, P., Borcea, C., Burger, A., Burgunder, G., Buta, A., Càceres, L., Clément, 2 E., Coquard, L., de Angelis, G., de France, G., Santos, F. de Oliveira, Dewald, A., Dijon, A., Dombradi, Z., Fiori, E., Fransen, C., Friessner, G., Gaudefroy, L., Georgiev, G., Grévy, S., Hackstein, M., Harakeh, M. N., Ibrahim, F., Kamalou, O., Kmiecik, M., Lozeva, R., Maj, A., Mihai, C., Möller, O., Myalski, S., Negoita, F., Pantelica, D., Perrot, L., Pissulla, Th., Rotaru, F., Rother, W., Scarpaci, J. A., Stodel, C., Thomas, J. C., and Ujic, P.

Subjects
Nuclear Experiment
Abstract

We report here the first direct lifetime measurement of the 2+1 state in 72,74Zn. The neutron-rich beam was produced by in-flight fragmentation of 76Ge at the Grand Acc\'el\'erateur National d'Ions Lourds and separated with the LISE spectrometer. The 2+1 state was excited by inelastic scattering and knock-out reaction on a CD2 target and its lifetime was measured by the recoil-distance Dopplershift method with the K\"oln plunger device combined with the EXOGAM detectors. The lifetimes of the 2+1 states in 72,74Zn were determined to be 17.9(18) and 27.0(24) ps, which correspond to reduced transition probabilities B(E2; 2+1 \rightarrow 0+) = 385(39) and 370(33) e2fm4, respectively. These values support the idea of a systematic maximum of collectivity at N = 42 for Zn, Ge and Se nuclei. In addition, the available systematics in the neighboring nuclei point towards a transition from a spherical oscillator at N = 40 to complete {\gamma}-softness at N = 42., Comment: 10 pages, 13 figures; accepted for publication in Phys. Rev. C

Published
2011
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58. Evidence for a spin-aligned neutron-proton paired phase from the level structure of $^{92}$Pd

Author

Cederwall, B., Moradi, F. Ghazi, Bäck, T., Johnson, A., Blomqvist, J., Clément, E., de France, G., Wadsworth, R., Andgren, K., Lagergren, K., Dijon, A., Jaworski, G., Liotta, R., Qi, C., Nyakó, B. M., Nyberg, J., Palacz, M., Al-Azri, H., Algora, A., de Angelis, G., Ataç, A., Bhattacharyya, S., Brock, T., Brown, J. R., Davies, P., Di Nitto, A., Dombrádi, Zs., Gadea, A., Gál, J., Hadinia, B., Johnston-Theasby, F., Joshi, P., Juhász, K., Julin, R., Jungclaus, A., Kalinka, G., Kara, S. O., Khaplanov, A., Kownacki, J., La Rana, G., Lenzi, S. M., Molnár, J., Moro, R., Napoli, D. R., Singh, B. S. Nara, Persson, A., Recchia, F., Sandzelius, M., Scheurer, J. -N., Sletten, G., Sohler, D., Söderström, P. -A., Taylor, M. J., Timár, J., Valiente-Dobón, J. J., Vardaci, E., and Williams, S.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The general phenomenon of shell structure in atomic nuclei has been understood since the pioneering work of Goeppert-Mayer, Haxel, Jensen and Suess.They realized that the experimental evidence for nuclear magic numbers could be explained by introducing a strong spin-orbit interaction in the nuclear shell model potential. However, our detailed knowledge of nuclear forces and the mechanisms governing the structure of nuclei, in particular far from stability, is still incomplete. In nuclei with equal neutron and proton numbers ($N = Z$), the unique nature of the atomic nucleus as an object composed of two distinct types of fermions can be expressed as enhanced correlations arising between neutrons and protons occupying orbitals with the same quantum numbers. Such correlations have been predicted to favor a new type of nuclear superfluidity; isoscalar neutron-proton pairing, in addition to normal isovector pairing (see Fig. 1). Despite many experimental efforts these predictions have not been confirmed. Here, we report on the first observation of excited states in $N = Z = 46$ nucleus $^{92}$Pd. Gamma rays emitted following the $^{58}$Ni($^{36}$Ar,2$n$)$^{92}$Pd fusion-evaporation reaction were identified using a combination of state-of-the-art high-resolution {\gamma}-ray, charged-particle and neutron detector systems. Our results reveal evidence for a spin-aligned, isoscalar neutron-proton coupling scheme, different from the previous prediction. We suggest that this coupling scheme replaces normal superfluidity (characterized by seniority coupling) in the ground and low-lying excited states of the heaviest N = Z nuclei. The strong isoscalar neutron- proton correlations in these $N = Z$ nuclei are predicted to have a considerable impact on their level structures, and to influence the dynamics of the stellar rapid proton capture nucleosynthesis process., Comment: 13 pages, 3 figures

Published
2011
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59. Emergence of the N=16 shell gap in 21O

Author

Fernandez-Dominguez, B., Thomas, J. S., Catford, W. N., Delaunay, F., Brown, S. M., Orr, N. A., Rejmund, M., Achouri, N. L., Falou, H. Al, Ashwood, N. A., Beaumel, D., Blumenfeld, Y., Brown, B. A., Chapman, R., Chartier, M., Curtis, N., Force, C., de France, G., Franchoo, S., Guillot, J., Haigh, P., Hammache, F., Labiche, M., Lapoux, V., Lemmon, R. C., Marechal, F., Moro, A., Martin, B., Mougeot, X., Mouginot, B., Nalpas, L., Navin, A., Patterson, N., Pietras, B., Pollacco, E. C., Leprince, A., Ramus, A., Scarpaci, J. A., de Séréville, N., Stefan, I., Sorlin, O., and Wilson, G.

Subjects
Nuclear Experiment
Abstract

The spectroscopy of 21O has been investigated using a radioactive 20O beam and the (d,p) reaction in inverse kinematics. The ground and first excited states have been determined to be Jpi=5/2+ and Jpi=1/2+ respectively. Two neutron unbound states were observed at excitation energies of 4.76 +- 0.10 and 6.16 +- 0.11. The spectroscopic factor deduced for the lower of these interpreted as a 3/2+ level, reveals a rather pure 0d3/2 single-particle configuration. The large energy difference between the 3/2+ and 1/2+ states is indicative of the emergence of the N=16 magic number. For the higher lying resonance, which has a character consistent with a spin-parity assignment of 3/2+ or 7/2-, a 71% branching ratio to the first 2+ state in 20O has been observed. The results are compared with new shell model calculations., Comment: 5 pages, 2 figures

Published
2010
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60. Migration of nuclear shell gaps studied in the d(24Ne,p gamma)25Ne reaction

Author

Catford, W. N., Timis, C. N., Lemmon, R. C., Labiche, M., Orr, N. A., Fernandez-Dominguez, B., Chapman, R., Freer, M., Chartier, M., Savajols, H., Rejmund, M., Achouri, N. L., Amzal, N., Ashwood, N. I., Baldwin, T. D., Burns, M., Caballero, L., Casadjian, J. M., Curtis, N., de France, G., Gelletly, W., Liang, X., Pain, S. D., Pucknell, V. P. E., Rubio, B., Sorlin, O., Spohr, K., Theisen, Ch., and Warner, D. D.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The transfer of neutrons onto 24Ne has been measured using a reaccelerated radioactive beam of 24Ne to study the (d,p) reaction in inverse kinematics. The unusual raising of the first 3/2+ level in 25Ne and its significance in terms of the migration of the neutron magic number from N=20 to N=16 is put on a firm footing by confirmation of this state's identity. The raised 3/2+ level is observed simultaneously with the intruder negative parity 7/2- and 3/2- levels, providing evidence for the reduction in the N=20 gap. The coincident gamma-ray decays allowed the assignment of spins as well as the transferred orbital angular momentum. The excitation energy of the 3/2+ state shows that the established USD shell model breaks down well within the sd model space and requires a revised treatment of the proton-neutron monopole interaction., Comment: Phys. Rev. Lett. in press (4 pages, 3 figures)

Published
2010
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61. TIARA: a large solid angle silicon array for direct reaction studies with radioactive beams

Author

Labiche, M., Catford, W. N., Lemmon, R. C., Timis, C. N., Chapman, R., Orr, N. A., Fernandez-Dominguez, B., Moores, G., Achouri, N. L., Amzal, N., Appleton, S., Ashwood, N. I., Baldwin, T. D., Burns, M., Caballero, L., Cacitti, J., Casadjian, J. M., Chartier, M., Curtis, N., Faiz, K., de France, G., Freer, M., Gautier, J. M., Gelletly, W., Iltis, G., Lecornu, B., Liang, X., Marry, C., Merrer, Y., Olivier, L., Pain, S. D., Pucknell, V. F. E., Raine, B., Rejmund, M., Rubio, B., Saillant, F., Savajols, H., Sorlin, O., Spohr, K., Theisen, Ch., Voltolini, G., and Warner, D. D.

Subjects
Nuclear Experiment
Abstract

A compact, quasi-4pi position sensitive silicon array, TIARA, designed to study direct reactions induced by radioactive beams in inverse kinematics is described here. The Transfer and Inelastic All-angle Reaction Array (TIARA) consists of 8 resistive charge division detectors forming an octagonal barrel around the target and a set of double-sided silicon-strip annular detectors positioned at each end of the barrel. The detector was coupled to the -ray array EXOGAM and the spectrometer VAMOS at the GANIL Laboratory to demonstrate the potential of such an apparatus with radioactive beams. The 14N(d,p)15N reaction, well known in direct kinematics, has been carried out in inverse kinematics for that purpose. The observation of the 15N ground state and excited states at 7.16 and 7.86 MeV is presented here as well as the comparison of the measured proton angular distributions with DWBA calculations. Transferred l-values are in very good agreement with both theoretical calculations and previous experimental results obtained in direct kinematics., Comment: 12 figures, submitted to NIM A

Published
2009
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62. Shape evolution in even-mass $$^{98-104}$$Zr isotopes via lifetime measurements using the $$\gamma \gamma $$-coincidence technique

Author

Pasqualato, G., primary, Ansari, S., additional, Heines, J. S., additional, Modamio, V., additional, Görgen, A., additional, Korten, W., additional, Ljungvall, J., additional, Clément, E., additional, Dudouet, J., additional, Lemasson, A., additional, Rodríguez, T. R., additional, Allmond, J. M., additional, Arici, T., additional, Beckmann, K. S., additional, Bruce, A. M., additional, Doherty, D., additional, Esmaylzadeh, A., additional, Gamba, E. R., additional, Gerhard, L., additional, Gerl, J., additional, Georgiev, G., additional, Ivanova, D. P., additional, Jolie, J., additional, Kim, Y.-H., additional, Knafla, L., additional, Korichi, A., additional, Koseoglou, P., additional, Labiche, M., additional, Lalkovski, S., additional, Lauritsen, T., additional, Li, H.-J., additional, Pedersen, L. G., additional, Pietri, S., additional, Ralet, D., additional, Regis, J. M., additional, Rudigier, M., additional, Saha, S., additional, Sahin, E., additional, Siem, S., additional, Singh, P., additional, Söderström, P.-A., additional, Theisen, C., additional, Tornyi, T., additional, Vandebrouck, M., additional, Witt, W., additional, Zielińska, M., additional, Barrientos, D., additional, Bednarczyk, P., additional, Benzoni, G., additional, Boston, A. J., additional, Boston, H. C., additional, Bracco, A., additional, Cederwall, B., additional, Ciemała, M., additional, de France, G., additional, Domingo-Pardo, C., additional, Eberth, J., additional, Gadea, A., additional, González, V., additional, Gottardo, A., additional, Harkness-Brennan, L. J., additional, Hess, H., additional, Judson, D. S., additional, Jungclaus, A., additional, Lenzi, S. M., additional, Leoni, S., additional, Menegazzo, R., additional, Mengoni, D., additional, Michelagnoli, C., additional, Napoli, D. R., additional, Nyberg, J., additional, Podolyák, Zs., additional, Pullia, A., additional, Recchia, F., additional, Reiter, P., additional, Rezynkina, K., additional, Salsac, M. D., additional, Sanchis, E., additional, Şenyiğit, M., additional, Siciliano, M., additional, Simpson, J., additional, Sohler, D., additional, Stezowski, O., additional, Valiente-Dobón, J. J., additional, and Verney, D., additional

Published
2023
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64. Cross-shell states in 15C: A test for p-sd interactions

Author

Lois-Fuentes, J., primary, Fernández-Domínguez, B., additional, Pereira-López, X., additional, Delaunay, F., additional, Catford, W.N., additional, Matta, A., additional, Orr, N.A., additional, Duguet, T., additional, Otsuka, T., additional, Somà, V., additional, Sorlin, O., additional, Suzuki, T., additional, Achouri, N.L., additional, Assié, M., additional, Bailey, S., additional, Bastin, B., additional, Blumenfeld, Y., additional, Borcea, R., additional, Caamaño, M., additional, Caceres, L., additional, Clément, E., additional, Corsi, A., additional, Curtis, N., additional, Deshayes, Q., additional, Farget, F., additional, Fisichella, M., additional, de France, G., additional, Franchoo, S., additional, Freer, M., additional, Gibelin, J., additional, Gillibert, A., additional, Grinyer, G.F., additional, Hammache, F., additional, Kamalou, O., additional, Knapton, A., additional, Kokalova, Tz., additional, Lapoux, V., additional, Le Crom, B., additional, Leblond, S., additional, Marqués, F.M., additional, Morfouace, P., additional, Pancin, J., additional, Perrot, L., additional, Piot, J., additional, Pollacco, E., additional, Ramos, D., additional, Regueira-Castro, D., additional, Rodríguez-Tajes, C., additional, Roger, T., additional, Rotaru, F., additional, Sénoville, M., additional, de Séréville, N., additional, Smith, R., additional, Stanoiu, M., additional, Stefan, I., additional, Stodel, C., additional, Suzuki, D., additional, Thomas, J.C., additional, Timofeyuk, N., additional, Vandebrouck, M., additional, Walshe, J., additional, and Wheldon, C., additional

Published
2023
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65. The 46Ar(3He, d)47K direct reaction as a probe of the 46Ar proton wavefunction

Author

Brugnara, D, primary, Gottardo, A, additional, Assié, M, additional, Mengoni, D, additional, Lemasson, A, additional, Clement, E, additional, Flavigny, F, additional, Ramos, D, additional, Galtarossa, F, additional, Matta, A, additional, Girard-Alcindor, V, additional, Babo, M, additional, Bazzacco, D, additional, Beaumel, D, additional, Blumenfeld, Y, additional, Bottoni, S, additional, Datta, U, additional, de Angelis, G, additional, de France, G, additional, Dudouet, J, additional, Duenas, J, additional, Goasduff, A, additional, Gregor, E T, additional, Hammache, F, additional, Illana, A, additional, Lalanne, L, additional, Leblond, S, additional, Lombardo, I, additional, Marchini, N, additional, Million, B, additional, Recchia, F, additional, Rezynkina, K, additional, Rocchini, M, additional, Rojo, J S, additional, Siciliano, M, additional, Valiente-Dobón, J J, additional, Zanon, I, additional, and Zielinska, M, additional

Published
2023
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66. Beta-decay branching ratios of 62Ga

Author

Bey, A., Blank, B., Canchel, G., Dossat, C., Giovinazzo, J., Matea, I., Elomaa, V., Eronen, T., Hager, U., Hakala, M., Jokinen, A., Kankainen, A., Moore, I., Penttila, H., Rinta-Antila, S., Saastamoinen, A., Sonoda, T., Aysto, J., Adimi, N., De France, G., Thomas, J. C., Voltolini, G., and Chaventré, T.

Subjects
Nuclear Experiment
Abstract

Beta-decay branching ratios of 62Ga have been measured at the IGISOL facility of the Accelerator Laboratory of the University of Jyvaskyla. 62Ga is one of the heavier Tz = 0, 0+ -> 0+ beta-emitting nuclides used to determine the vector coupling constant of the weak interaction and the Vud quark-mixing matrix element. For part of the experimental studies presented here, the JYFLTRAP facility has been employed to prepare isotopically pure beams of 62Ga. The branching ratio obtained, BR= 99.893(24)%, for the super-allowed branch is in agreement with previous measurements and allows to determine the ft value and the universal Ft value for the super-allowed beta decay of 62Ga.

Published
2008
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68. Accessing tens-to-hundreds femtoseconds nuclear state lifetimes with low-energy binary heavy-ion reactions

Author

Ciemała, M., Ziliani, S., Crespi, F. C. L., Leoni, S., Fornal, B., Maj, A., Bednarczyk, P., Benzoni, G., Bracco, A., Boiano, C., Bottoni, S., Brambilla, S., Bast, M., Beckers, M., Braunroth, T., Camera, F., Cieplicka-Oryńczak, N., Clément, E., Coelli, S., Dorvaux, O., Erturk, S., De France, G., Fransen, C., Goldkuhle, A., Grębosz, J., Harakeh, M. N., Iskra, Ł. W., Jacquot, B., Karpov, A., Kicińska-Habior, M., Kim, Y.-H., Kmiecik, M., Lemasson, A., Lenzi, S. M., Lewitowicz, M., Li, H., Matea, I., Mazurek, K., Michelagnoli, C., Matejska-Minda, M., Million, B., Müller-Gatermann, C., Nanal, V., Napiorkowski, P., Napoli, D. R., Palit, R., Rejmund, M., Schmitt, Ch., Stanoiu, M., Stefan, I., Vardaci, E., Wasilewska, B., Wieland, O., Ziębliński, M., and Zielińska, M.

Published
2021
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69. First observation of 55,56Zn

Author

Giovinazzo, J., Blank, B., Borcea, C., Chartier, M., Czajkowski, S., de France, G., Grzywacz, R., Janas, Z., Lewitowicz, M., Santos, F. de Oliveira, Pf"utzner, M., Pravikoff, M. S., and Thomas, J. C.

Subjects
Nuclear Experiment
Abstract

In an experiment at the SISSI/LISE3 facility of GANIL, the most proton-rich zinc isotopes 55,56Zn have been observed for the first time. The experiment was performed using a high-intensity 58Ni beam at 74.5 MeV/nucleon impinging on a nickel target. The identification of 55,56Zn opens the way to 54Zn, a good candidate for two-proton radioactivity according to theoretical predictions., Comment: 2 pages, 1 figure, accepted for publication in Eur. Phys. J. A

Published
2000
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70. Decay of proton-rich nuclei between 39Ti and 49Ni

Author

Giovinazzo, J., Blank, B., Borcea, C., Chartier, M., Czajkowski, S., de France, G., Grzywacz, R., Janas, Z., Lewitowicz, M., Santos, F. de Oliveira, Pf"utzner, M., Pravikoff, M. S., and Thomas, J. C.

Subjects
Nuclear Experiment
Abstract

Decay studies of very neutron-deficient nuclei ranging from 39Ti to 49Ni have been performed during a projectile fragmentation experiment at the GANIL/LISE3 separator. For all nuclei studied in this work, 39,40Ti, 42,43Cr, 46Mn, 45,46,47Fe and 49Ni, half-lives and decay spectra have been measured. In a few cases, gamma coincidence measurements helped to successfully identify the initial and final states of transitions. In these cases, partial decay scheme are proposed. For the most exotic isotopes, 39Ti, 42Cr, 45Fe and 49Ni, which are candidates for two-proton radioactivity from the ground state, no clear evidence of this process is seen in our spectra and we conclude rather on a delayed particle decay., Comment: 12 pages, 15 figures, submitted for publication in Eur. Phys. J. A

Published
2000
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71. Quantum Calculation of Dipole Excitation in Fusion Reaction

Author

Simenel, C., Chomaz, Ph., and de France, G.

Subjects
Nuclear Theory
Abstract

The excitation of the giant dipole resonance by fusion is studied with N/Z asymmetry in the entrance channel. the TDHF solution exhibits a strong dipole vibration which can be associated with a giant vibration along the main axis of a fluctuating prolate shape. The consequences on the gamma-ray emission from hot compound nuclei are discussed., Comment: 4 pages, 4 figures, submitted to Physical Review Letter

Published
2000
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72. On the discovery of doubly-magic $^{48}$Ni

Author

Blank, B., Chartier, M., Czajkowski, S., Giovinazzo, J., Pravikoff, M. S., Thomas, J. -C., de France, G., Santos, F. de Oliveira, Lewitowicz, M., Borcea, C., Grzywacz, R., Janas, Z., and Pfützner, M.

Subjects
Nuclear Experiment
Abstract

The paper reports on the first observation of doubly-magic Nickel-48 in an experimental at the SISSI/LISE3 facility of GANIL. Four Nickel-48 isotopes were identified. In addition, roughly 100 Nickel-49, 50 Iron-45, and 290 Chromium-42 isotopes were observed. This opens the possibility to search for two-proton emission from these nuclei., Comment: 4 pages, 3 figures, accepted for publication in Phys. Rev. Lett

Published
1999
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73. Structure of N=56 isotones with 36≤Z≤42 protons

Author

Wiśniewski, J., primary, Urban, W., additional, Rząca-Urban, T., additional, Sieja, K., additional, Blanc, A., additional, Jentschel, M., additional, Micheagnoli, C., additional, Mutti, P., additional, Köster, U., additional, de France, G., additional, Simpson, G. S., additional, and Ur, C. A., additional

Published
2023
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74. Paricle identification at VAMOS++ with machine learning techniques

Author

Cho, Y., primary, Kim, Y.H., additional, Choi, S., additional, Park, J., additional, Bae, S., additional, Hahn, K.I., additional, Son, Y., additional, Navin, A., additional, Lemasson, A., additional, Rejmund, M., additional, Ramos, D., additional, Ackermann, D., additional, Utepov, A., additional, Fourgeres, C., additional, Thomas, J.C., additional, Goupil, J., additional, Fremont, G., additional, de France, G., additional, Watanabe, Y.X., additional, Hirayama, Y., additional, Jeong, S., additional, Niwase, T., additional, Miyatake, H., additional, Schury, P., additional, Rosenbusch, M., additional, Chae, K., additional, Kim, C., additional, Kim, S., additional, Gu, G.M., additional, Kim, M.J., additional, John, P., additional, Andreev, A., additional, Korten, W., additional, Recchia, F., additional, Angelis, G. de, additional, Vidal, R. Perez, additional, Rezynkina, K., additional, Ha, J., additional, Didierjean, F., additional, Marini, P., additional, Treasa, D., additional, Tsekhanovich, I., additional, Dudouet, J., additional, Bhattacharyya, S., additional, Mukherjee, G., additional, Banik, R., additional, Bhattacharya, S., additional, and Mukai, M., additional

Published
2023
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75. Low-spin excitations in Zr95

Author

Rząca-Urban, T., primary, Urban, W., additional, Blanc, A., additional, Jentschel, M., additional, Mutti, P., additional, Köster, U., additional, de France, G., additional, Simpson, G. S., additional, and Ur, C. A., additional

Published
2023
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76. Conceptual design of the AGATA [formula omitted] array at GANIL

Author

Clément, E., Michelagnoli, C., de France, G., Li, H.J., Lemasson, A., Barthe Dejean, C., Beuzard, M., Bougault, P., Cacitti, J., Foucher, J.-L., Fremont, G., Gangnant, P., Goupil, J., Houarner, C., Jean, M., Lefevre, A., Legeard, L., Legruel, F., Maugeais, C., Ménager, L., Ménard, N., Munoz, H., Ozille, M., Raine, B., Ropert, J.A., Saillant, F., Spitaels, C., Tripon, M., Vallerand, Ph., Voltolini, G., Korten, W., Salsac, M.-D., Theisen, Ch., Zielińska, M., Joannem, T., Karolak, M., Kebbiri, M., Lotode, A., Touzery, R., Walter, Ch., Korichi, A., Ljungvall, J., Lopez-Martens, A., Ralet, D., Dosme, N., Grave, X., Karkour, N., Lafay, X., Legay, E., Kojouharov, I., Domingo-Pardo, C., Gadea, A., Pérez-Vidal, R.M., Civera, J.V., Birkenbach, B., Eberth, J., Hess, H., Lewandowski, L., Reiter, P., Nannini, A., De Angelis, G., Jaworski, G., John, P., Napoli, D.R., Valiente-Dobón, J.J., Barrientos, D., Bortolato, D., Benzoni, G., Bracco, A., Brambilla, S., Camera, F., Crespi, F.C.L., Leoni, S., Million, B., Pullia, A., Wieland, O., Bazzacco, D., Lenzi, S.M., Lunardi, S., Menegazzo, R., Mengoni, D., Recchia, F., Bellato, M., Isocrate, R., Egea Canet, F.J., Didierjean, F., Duchêne, G., Baumann, R., Brucker, M., Dangelser, E., Filliger, M., Friedmann, H., Gaudiot, G., Grapton, J.-N., Kocher, H., Mathieu, C., Sigward, M.-H., Thomas, D., Veeramootoo, S., Dudouet, J., Stézowski, O., Aufranc, C., Aubert, Y., Labiche, M., Simpson, J., Burrows, I., Coleman-Smith, P.J., Grant, A., Lazarus, I.H., Morrall, P.S., Pucknell, V.F.E., Boston, A., Judson, D.S., Lalović, N., Nyberg, J., Collado, J., González, V., Kuti, I., Nyakó, B.M., Maj, A., and Rudigier, M.

Published
2017
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77. Lifetimes of core-excited states in semi-magic 95Rh

Author

Ertoprak, A., Qi, C., Cederwall, B., Doncel, M., Jakobsson, U., Nyakó, B. M., Jaworski, G., Davies, P., de France, G., Kuti, I., Napoli, D. R., Wadsworth, R., Ghugre, S. S., Raut, R., Akkus, B., Al Azri, H., Algora, A., de Angelis, G., Atac, A., Bäck, T., Boso, A., Clément, E., Debenham, D. M., Dombrádi, Zs., Ertürk, S., Gadea, A., Ghazi Moradi, F., Gottardo, A., Hüyük, T., Ideguchi, E., Li, H., Michelagnoli, C., Modamio, V., Nyberg, J., Palacz, M., Petrache, C. M., Recchia, F., Sandzelius, M., Siciliano, M., Sohler, D., Timár, J., Valiente-Dobón, J. J., and Xiao, Z. G.

Published
2020
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78. Neutron-proton pairing in the N=Z radioactive -shell Nuclei Ni and Fe probed by pair transfer

Author

Le Crom, B., Assié, M., Blumenfeld, Y., Guillot, J., Sagawa, H., Suzuki, T., Honma, M., Achouri, N.L., Bastin, B., Borcea, R., Catford, W.N., Clément, E., Cáceres, L., Caamaño, M., Corsi, A., De France, G., Delaunay, F., De Séréville, N., Fernandez-Dominguez, B., Fisichella, M., Franchoo, S., Georgiadou, A., Gibelin, J., Gillibert, A., Hammache, F., Kamalou, O., Knapton, A., Lapoux, V., Leblond, S., Macchiavelli, A.O., Marqués, F.M., Matta, A., Ménager, L., Morfouace, P., Orr, N.A., Pancin, J., Pereira-Lopez, X., Perrot, L., Piot, J., Pollacco, E., Ramos, D., Roger, T., Rotaru, F., Sánchez-Benítez, A.M., Sénoville, M., Sorlin, O., Stanoiu, M., Stefan, I., Stodel, C., Suzuki, D., Thomas, J.C., and Vandebrouck, M.

Abstract

The isovector and isoscalar components of neutron-proton pairing are investigated in the N=Z unstable nuclei of the fp-shell through the two-nucleon transfer reaction (p,$^{3}$He) in inverse kinematics. The combination of particle and gamma-ray detection with radioactive beams of $^{56}$Ni and $^{52}$Fe, produced by fragmentation at the GANIL/LISE facility, made it possible to carry out this study for the first time in a closed and an open-shell nucleus in the fp-shell. The transfer cross-sections for ground-state to ground-state (J=0$^{+}$, T=1) and to the first (J=1$^{+}$, T=0) state were extracted for both cases together with the transfer cross-section ratios σ(0+,T=1)/σ(1+,T=0). They are compared with second-order distorted-wave born approximation (DWBA) calculations. The enhancement of the ground-state to ground-state pair transfer cross-section close to mid-shell, in $^{52}$Fe, points towards a superfluid phase in the isovector channel. For the “deuteron-like” transfer, very low cross-sections to the first (J=1$^{+}$, T=0) state were observed both for $^{56}$Ni(p,$^{3}$He) and $^{52}$Fe(p,$^{3}$He) and are related to a strong hindrance of this channel due to spin-orbit effect. No evidence for an isoscalar deuteron-like condensate is observed.

Published
2023

79. Shape evolution in even-mass 98-104Zr isotopes via lifetime measurements using the γ γ-coincidence technique

Author

Pasqualato, G., Ansari, S., Heines, J. S., Modamio, V., Gorgen, A., Korten, W., Ljungvall, J., Clement, E., Dudouet, J., Lemasson, A., Rodriguez, T. R., Allmond, J. M., Arici, T., Beckmann, K. S., Bruce, A. M., Doherty, D., Esmaylzadeh, A., Gamba, E. R., Gerhard, L., Gerl, J., Georgiev, G., Ivanova, D. P., Jolie, J., Kim, Y. -H, Knafla, L., Korichi, A., Koseoglou, P., Labiche, M., Lalkovski, S., Lauritsen, T., Li, H. -J, Pedersen, L. G., Pietri, S., Ralet, D., Regis, J. M., Rudigier, M., Saha, S., Sahin, E., Siem, S., Singh, P., Soederstroem, P-A, Theisen, C., Tornyi, T., Vandebrouck, M., Witt, W., Zielinska, M., Barrientos, D., Bednarczyk, P., Benzoni, G., Boston, A. J., Boston, H. C., Bracco, A., Cederwall, B., Ciemala, M., de France, G., Domingo-Pardo, C., Eberth, J., Gadea, A., Gonzalez, V., Gottardo, A., Harkness-Brennan, L. J., Hess, H., Judson, D. S., Jungclaus, A., Lenzi, S. M., Leoni, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Napoli, D. R., Nyberg, Johan, Podolyak, Zs., Pullia, A., Recchia, F., Reiter, P., Rezynkina, K., Salsac, M. D., Sanchis, E., Senyigit, M., Siciliano, M., Simpson, J., Sohler, D., Stezowski, O., Valiente-Dobon, J. J., Verney, D., Pasqualato, G., Ansari, S., Heines, J. S., Modamio, V., Gorgen, A., Korten, W., Ljungvall, J., Clement, E., Dudouet, J., Lemasson, A., Rodriguez, T. R., Allmond, J. M., Arici, T., Beckmann, K. S., Bruce, A. M., Doherty, D., Esmaylzadeh, A., Gamba, E. R., Gerhard, L., Gerl, J., Georgiev, G., Ivanova, D. P., Jolie, J., Kim, Y. -H, Knafla, L., Korichi, A., Koseoglou, P., Labiche, M., Lalkovski, S., Lauritsen, T., Li, H. -J, Pedersen, L. G., Pietri, S., Ralet, D., Regis, J. M., Rudigier, M., Saha, S., Sahin, E., Siem, S., Singh, P., Soederstroem, P-A, Theisen, C., Tornyi, T., Vandebrouck, M., Witt, W., Zielinska, M., Barrientos, D., Bednarczyk, P., Benzoni, G., Boston, A. J., Boston, H. C., Bracco, A., Cederwall, B., Ciemala, M., de France, G., Domingo-Pardo, C., Eberth, J., Gadea, A., Gonzalez, V., Gottardo, A., Harkness-Brennan, L. J., Hess, H., Judson, D. S., Jungclaus, A., Lenzi, S. M., Leoni, S., Menegazzo, R., Mengoni, D., Michelagnoli, C., Napoli, D. R., Nyberg, Johan, Podolyak, Zs., Pullia, A., Recchia, F., Reiter, P., Rezynkina, K., Salsac, M. D., Sanchis, E., Senyigit, M., Siciliano, M., Simpson, J., Sohler, D., Stezowski, O., Valiente-Dobon, J. J., and Verney, D.

Abstract

The Zirconium (Z = 40) isotopic chain has attracted interest for more than four decades. The abrupt lowering of the energy of the first 2(+) state and the increase in the transition strength B(E2; 2(1)(+) -> 0(1)(+) ) going from Zr-98 to Zr-100 has been the first example of "quantum phase transition" in nuclear shapes, which has few equivalents in the nuclear chart. Although a multitude of experiments have been performed to measure nuclear properties related to nuclear shapes and collectivity in the region, none of the measured lifetimes were obtained using the Recoil Distance Doppler Shift method in the gamma gamma-coincidence mode where a gate on the direct feeding transition of the state of interest allows a strict control of systematical errors. This work reports the results of lifetime measurements for the first yrast excited states in Zr98-104 carried out to extract reduced transition probabilities. The new lifetime values in gamma gamma-coincidence and gamma-single mode are compared with the results of former experiments. Recent predictions of the Interacting Boson Model with Configuration Mixing, the Symmetry Conserving Configuration Mixing model based on the Hartree-Fock- Bogoliubov approach and the Monte Carlo Shell Model are presented and compared with the experimental data.

Published
2023
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80. Spectroscopic quadrupole moments in 124Xe

Author

Clement, E., Lemasson, A., Rejmund, M., Jacquot, B., Ralet, D., Michelagnoli, C., Barrientos, D., Bednarczyk, P., Benzoni, G., Boston, A. J., Bracco, A., Cederwall, B., Ciemala, M., Collado, J., Crespi, F., Domingo-Pardo, C., Dudouet, J., Eberth, H. J., de France, G., Gadea, A., Gonzalez, V., Gottardo, A., Harkness, L., Hess, H., Jungclaus, A., Kaskas, A., Korten, W., Lenzi, S. M., Leoni, S., Ljungvall, J., Menegazzo, R., Mengoni, D., Million, B., Napoli, D. R., Nyberg, Johan, Podolyak, Zs., Pullia, A., Arnes, B. Quintana, Recchia, F., Redon, N., Reiter, P., Salsac, M. D., Sanchis, E., Senyigit, M., Siciliano, M., Sohler, D., Stezowski, O., Theisen, C., Dobon, J. J. Valiente, Clement, E., Lemasson, A., Rejmund, M., Jacquot, B., Ralet, D., Michelagnoli, C., Barrientos, D., Bednarczyk, P., Benzoni, G., Boston, A. J., Bracco, A., Cederwall, B., Ciemala, M., Collado, J., Crespi, F., Domingo-Pardo, C., Dudouet, J., Eberth, H. J., de France, G., Gadea, A., Gonzalez, V., Gottardo, A., Harkness, L., Hess, H., Jungclaus, A., Kaskas, A., Korten, W., Lenzi, S. M., Leoni, S., Ljungvall, J., Menegazzo, R., Mengoni, D., Million, B., Napoli, D. R., Nyberg, Johan, Podolyak, Zs., Pullia, A., Arnes, B. Quintana, Recchia, F., Redon, N., Reiter, P., Salsac, M. D., Sanchis, E., Senyigit, M., Siciliano, M., Sohler, D., Stezowski, O., Theisen, C., and Dobon, J. J. Valiente

Abstract

Background: The Xe isotopic chain with four valence protons above the Z = 50 shell closure is an ideal laboratory for the study of the evolution of nuclear deformation. At the N = 82 shell closure, 136Xe presents all characteristics of a doubly closed shell nucleus with a spherical shape. In the very neutron-deficient isotopes close to N = 50, the alpha-decay chain of Xe was investigated to probe the radioactive decay properties near the drip-line and the magicity of 100Sn. Additionally, the Xe isotopes present higher order symmetries in the nuclear deformation such as the octupole degree of freedom near N = 60 and N = 90 or O(6) symmetry in stable isotopes. Purpose: The relevance of the O(6) symmetry has been investigated by measuring the spectroscopic quadrupole moment of the first excited states in 124Xe. In the O(6) symmetry limit, the spectroscopic quadrupole moment of collective states is expected to be null. Method: A stable 124Xe beam with energies of 4.03A MeV and 4.11A MeV was used to bombard a natW target at the GANIL facility. Excited states were populated via the safe Coulomb excitation reaction. The collision of the heavy ions with a large Z at low energy make this reaction sensitive to the diagonal E2 matrix element of the excited states. The recoils were detected in the VAMOS++ magnetic spectrometer and the gamma rays in the AGATA tracking array. The least squares fitting code GOSIA was used for the analysis to extract both E2 and M1 transitional and E2 diagonal matrix elements. Results: The rotational ground state band was populated up to the 8+1 state as well as the 2+2 and 4+2 states. Using high precision spectroscopic data to constrain the GOSIA fit, the spectroscopic quadrupole moments of the 2+1 , 4+1 , and 6+1 states were determined for the first time. Conclusions: The spectroscopic quadrupole moments were found to be negative, large, and constant in the ground state band underlining the prolate axially deformed ground state band of 124Xe. The

Published
2023
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82. Experimental evidence of the effect of nuclear shells on fission dissipation and time

Author

Ramos, D., primary, Caamaño, M., additional, Farget, F., additional, Rodríguez-Tajes, C., additional, Lemasson, A., additional, Schmitt, C., additional, Audouin, L., additional, Benlliure, J., additional, Casarejos, E., additional, Clement, E., additional, Cortina, D., additional, Delaune, O., additional, Derkx, X., additional, Dijon, A., additional, Doré, D., additional, Fernández-Domínguez, B., additional, de France, G., additional, Heinz, A., additional, Jacquot, B., additional, Paradela, C., additional, Rejmund, M., additional, Roger, T., additional, and Salsac, M.-D., additional

Published
2023
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83. Spectroscopic quadrupole moments in Xe124

Author

Clément, E., primary, Lemasson, A., additional, Rejmund, M., additional, Jacquot, B., additional, Ralet, D., additional, Michelagnoli, C., additional, Barrientos, D., additional, Bednarczyk, P., additional, Benzoni, G., additional, Boston, A. J., additional, Bracco, A., additional, Cederwall, B., additional, Ciemala, M., additional, Collado, J., additional, Crespi, F., additional, Domingo-Pardo, C., additional, Dudouet, J., additional, Eberth, H. J., additional, de France, G., additional, Gadea, A., additional, Gonzalez, V., additional, Gottardo, A., additional, Harkness, L., additional, Hess, H., additional, Jungclaus, A., additional, Kaşkaş, A., additional, Korten, W., additional, Lenzi, S. M., additional, Leoni, S., additional, Ljungvall, J., additional, Menegazzo, R., additional, Mengoni, D., additional, Million, B., additional, Napoli, D. R., additional, Nyberg, J., additional, Podolyak, Zs., additional, Pullia, A., additional, Quintana Arnés, B., additional, Recchia, F., additional, Redon, N., additional, Reiter, P., additional, D.Salsac, M., additional, Sanchis, E., additional, Şenyiğit, M., additional, Siciliano, M., additional, Sohler, D., additional, Stezowski, O., additional, Theisen, C., additional, and Valiente Dobón, J. J., additional

Published
2023
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84. Digital pulse-timing technique for the neutron detector array NEDA

Author

Modamio, V., Valiente-Dobón, J.J., Jaworski, G., Hüyük, T., Triossi, A., Egea, J., Di Nitto, A., Söderström, P.-A., Agramunt Ros, J., de Angelis, G., de France, G., Erduran, M.N., Ertürk, S., Gadea, A., González, V., Kownacki, J., Moszynski, M., Nyberg, J., Palacz, M., Sanchis, E., and Wadsworth, R.

Published
2015
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85. Test of the SO(6) selection rule in 196Pt using cold-neutron capture

Author

Jolie, J., Régis, J.-M., Wilmsen, D., Saed-Samii, N., Pfeiffer, M., Warr, N., Blanc, A., Jentschel, M., Köster, U., Mutti, P., Soldner, T., Simpson, G.S., De France, G., Urban, W., Drouet, F., Vancraeyenest, A., Bruce, A.M., Roberts, O.J., Fraile, L.M., Paziy, V., Ignatov, A., Kröll, Th., Ivanova, D., Kisyov, S., Lalkovski, S., Podolyak, Zs., Regan, P.H., Wilson, E., Korten, W., Ur, C.A., Lica, R., and Marginean, N.

Published
2015
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86. Half-life determination of Tz = -1 and Tz = - β decay of 58Zn

Author

Kucuk, L., Orrigo, S. E. A., Montaner-Pizá, A., Rubio, B., Fujita, Y., Gelletly, W., Blank, B., Oktem, Y., Adachi, T., Algora, A., Ascher, P., Cakirli, R. B., de France, G., Fujita, H., Ganioğlu, E., Giovinazzo, J., Grévy, S., Marqués, F. M., Molina, F., de Oliveira Santos, F., Perrot, L., Raabe, R., Srivastava, P. C., Susoy, G., Tamii, A., and Thomas, J. C.

Published
2017
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88. Evidence for spherical-oblate shape coexistence in Tc87

Author

Liu, X., primary, Cederwall, B., additional, Qi, C., additional, Wyss, R. A., additional, Aktas, Ö., additional, Ertoprak, A., additional, Zhang, W., additional, Clément, E., additional, de France, G., additional, Ralet, D., additional, Gadea, A., additional, Goasduff, A., additional, Jaworski, G., additional, Kuti, I., additional, Nyakó, B. M., additional, Nyberg, J., additional, Palacz, M., additional, Wadsworth, R., additional, Valiente-Dobón, J. J., additional, Al-Azri, H., additional, Ataç Nyberg, A., additional, Bäck, T., additional, de Angelis, G., additional, Doncel, M., additional, Dudouet, J., additional, Gottardo, A., additional, Jurado, M., additional, Ljungvall, J., additional, Mengoni, D., additional, Napoli, D. R., additional, Petrache, C. M., additional, Sohler, D., additional, Timár, J., additional, Barrientos, D., additional, Bednarczyk, P., additional, Benzoni, G., additional, Birkenbach, B., additional, Boston, A. J., additional, Boston, H. C., additional, Burrows, I., additional, Charles, L., additional, Ciemala, M., additional, Crespi, F. C. L., additional, Cullen, D. M., additional, Désesquelles, P., additional, Domingo-Pardo, C., additional, Eberth, J., additional, Erduran, N., additional, Ertürk, S., additional, González, V., additional, Goupil, J., additional, Hess, H., additional, Huyuk, T., additional, Jungclaus, A., additional, Korten, W., additional, Lemasson, A., additional, Leoni, S., additional, Maj, A., additional, Menegazzo, R., additional, Million, B., additional, Perez-Vidal, R. M., additional, Podolyàk, Zs., additional, Pullia, A., additional, Recchia, F., additional, Reiter, P., additional, Saillant, F., additional, Salsac, M. D., additional, Sanchis, E., additional, Simpson, J., additional, Stezowski, O., additional, Theisen, C., additional, and Zielińska, M., additional

Published
2022
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89. Evidence of Partial Seniority Conservation in the πg9/2 Shell for the N=50 Isotones

Author

Pérez-Vidal, R. M., primary, Gadea, A., additional, Domingo-Pardo, C., additional, Gargano, A., additional, Valiente-Dobón, J. J., additional, Clément, E., additional, Lemasson, A., additional, Coraggio, L., additional, Siciliano, M., additional, Szilner, S., additional, Bast, M., additional, Braunroth, T., additional, Collado, J., additional, Corina, A., additional, Dewald, A., additional, Doncel, M., additional, Dudouet, J., additional, de France, G., additional, Fransen, C., additional, González, V., additional, Hüyük, T., additional, Jacquot, B., additional, John, P. R., additional, Jungclaus, A., additional, Kim, Y. H., additional, Korichi, A., additional, Labiche, M., additional, Lenzi, S., additional, Li, H., additional, Ljungvall, J., additional, López-Martens, A., additional, Mengoni, D., additional, Michelagnoli, C., additional, Müller-Gatermann, C., additional, Napoli, D. R., additional, Navin, A., additional, Quintana, B., additional, Ramos, D., additional, Rejmund, M., additional, Sanchis, E., additional, Simpson, J., additional, Stezowski, O., additional, Wilmsen, D., additional, Zielińska, M., additional, Boston, A. J., additional, Barrientos, D., additional, Bednarczyk, P., additional, Benzoni, G., additional, Birkenbach, B., additional, Boston, H. C., additional, Bracco, A., additional, Cederwall, B., additional, Cullen, D. M., additional, Didierjean, F., additional, Eberth, J., additional, Gottardo, A., additional, Goupil, J., additional, Harkness-Brennan, L. J., additional, Hess, H., additional, Judson, D. S., additional, Kaşkaş, A., additional, Korten, W., additional, Leoni, S., additional, Menegazzo, R., additional, Million, B., additional, Nyberg, J., additional, Podolyak, Zs., additional, Pullia, A., additional, Ralet, D., additional, Recchia, F., additional, Reiter, P., additional, Rezynkina, K., additional, Salsac, M. D., additional, Şenyiğit, M., additional, Sohler, D., additional, Theisen, Ch., additional, and Verney, D., additional

Published
2022
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90. Germanium-gated γ–γ fast timing of excited states in fission fragments using the EXILL&FATIMA spectrometer

Author

Régis, J.-M., Simpson, G.S., Blanc, A., de France, G., Jentschel, M., Köster, U., Mutti, P., Paziy, V., Saed-Samii, N., Soldner, T., Ur, C.A., Urban, W., Bruce, A.M., Drouet, F., Fraile, L.M., Ilieva, S., Jolie, J., Korten, W., Kröll, T., Lalkovski, S., Mach, H., Mărginean, N., Pascovici, G., Podolyak, Zs., Regan, P.H., Roberts, O.J., Smith, J.F., Townsley, C., Vancraeyenest, A., and Warr, N.

Published
2014
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91. Beta Decay Study of the [formula omitted]56Zn Nucleus and the Determination of the Half-Lives of a Few fp-shell Nuclei

Author

Rubio, B., Orrigo, S.E.A., Kucuk, L., Montaner-Pizá, A., Fujita, Y., Fujita, H., Blank, B., Gelletly, W., Adachi, T., Agramunt, J., Algora, A., Ascher, P., Bilgier, B., Cáceres, L., Cakirli, R.B., de France, G., Ganioğlu, E., Gerbaux, M., Giovinazzo, J., Grevy, S., Kamalou, O., Kozer, H.C., Kurtukian-Nieto, T., Marqués, F.M., Molina, F., Oktem, Y., de Oliveira Santos, F., Perrot, L., Popescu, L., Raabe, R., Rogers, A.M., Srivastava, P.C., Susoy, G., Suzuki, T., Tamii, A., and Thomas, J.C.

Published
2014
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93. Musett: A segmented Si array for Recoil-Decay-Tagging studies at VAMOS

Author

Theisen, Ch., Jeanneau, F., Sulignano, B., Druillole, F., Ljungvall, J., Paul, B., Virique, E., Baron, P., Bervas, H., Clément, E., Delagnes, E., Dijon, A., Dossat, E., Drouart, A., Farget, F., Flouzat, Ch., De France, G., Görgen, A., Houarner, Ch., Jacquot, B., Korten, W., Lebertre, G., Lecornu, B., Legeard, L., Lermitage, A., Lhenoret, S., Marry, C., Maugeais, C., Menager, L., Meunier, O., Navin, A., Nizery, F., Obertelli, A., Rauly, E., Raine, B., Rejmund, M., Ropert, J., Saillant, F., Savajols, H., Schmitt, Ch., Tripon, M., Wanlin, E., and Wittwer, G.

Published
2014
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95. M1 and E2 transition rates from core-excited states in semi-magic 94Ru

Author

Ertoprak, A., Cederwall, B., Qi, C., Doncel, M., Jakobsson, U., Nyakó, B. M., Jaworski, G., Davies, P., de France, G., Kuti, I., Napoli, D. R., Wadsworth, R., Ghugre, S. S., Raut, R., Akkus, B., Al Azri, H., Algora, A., de Angelis, G., Atac, A., Bäck, T., Boso, A., Clément, E., Debenham, D. M., Dombrádi, Zs., Ertürk, S., Gadea, A., Ghazi Moradi, F., Gottardo, A., Hüyük, T., Ideguchi, E., Li, H., Michelagnoli, C., Modamio, V., Nyberg, J., Palacz, M., Petrache, C. M., Recchia, F., Sandzelius, M., Siciliano, M., Timár, J., Valiente-Dobón, J. J., and Xiao, Z. G.

Published
2018
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96. Lifetimes of excited states in triaxially deformed 107Tc and 109,111,113Rh

Author

Hagen, T. W., Görgen, A., Korten, W., Grente, L., Salsac, M. -D., Farget, F., Braunroth, T., Bruyneel, B., Celikovic, I., Clément, E., de France, G., Delaune, O., Dewald, A., Dijon, A., Hackstein, M., Jacquot, B., Litzinger, J., Ljungvall, J., Louchart, C., Michelagnoli, C., Napoli, D. R., Recchia, F., Rother, W., Sahin, E., Siem, S., Sulignano, B., Theisen, Ch., and Valiente-Dobon, J. J.

Published
2018
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97. Study of collisions of 136Xe + 198Pt for the KEK isotope separator

Author

Watanabe, Y.X., Hirayama, Y., Imai, N., Ishiyama, H., Jeong, S.C., Miyatake, H., Clement, E., de France, G., Navin, A., Rejmund, M., Schmitt, C., Pollarolo, G., Corradi, L., Fioretto, E., Montanari, D., Choi, S.H., Kim, Y.H., Song, J.S., Niikura, M., Suzuki, D., Nishibata, H., and Takatsu, J.

Published
2013
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98. The -decay of Kr into Br: Restoration of the pseudo-SU(4) symmetry

Author

Vitéz-Sveiczer, A., Algora, A., Morales, A.I., Rubio, B., Kiss, G.G., Sarriguren, P., Van Isacker, P., de Angelis, G., Recchia, F., Nishimura, S., Agramunt, J., Guadilla, V., Montaner-Pizá, A., Orrigo, S.E.A., Horváth, A., Napoli, D., Lenzi, S., Boso, A., Phong, V.H., Wu, J., Söderström, P.A., Sumikama, T., Suzuki, H., Takeda, H., Ahn, D.S., Baba, H., Doornebal, P., Fukuda, N., Inabe, N., Isobe, T., Kubo, T., Kubono, S., Sakurai, H., Shimizu, Y., Sidong, C., Blank, B., Ascher, P., Gerbaux, M., Goigoux, T., Giovinazzo, J., Grévy, S., Kurtukián Nieto, T., Magron, C., Gelletly, W., Dombrádi, Zs., Fujita, Y., Tanaka, M., Aguilera, P., Molina, F., Eberth, J., Diel, F., Lubos, D., Borcea, C., Ganioglu, E., Nishimura, D., Oikawa, H., Takei, Y., Yagi, S., Korten, W., de France, G., Davies, P., Liu, J., Lee, J., Lokotko, T., Kojouharov, I., Kurz, N., Shaffner, H., and Petrovici, A.

Abstract

The β-decay of the even-even nucleus $^{70}$Kr with Z=N+2, has been investigated at the Radioactive Ion Beam Factory (RIBF) of the RIKEN Nishina Center using the BigRIPS fragment separator, the ZeroDegree Spectrometer, the WAS3ABI implantation station and the EURICA HPGe cluster array. Fifteen γ-rays associated with the β-decay of $^{70}$Kr into $^{70}$Br have been identified for the first time, defining ten populated states below Eexc=3300 keV. The half-life of $^{70}$Kr was derived with increased precision and found to be t1/2=45.19±0.14 ms. The β-delayed proton emission probability has also been determined as εp=0.545(23)%. An increase in the β-strength to the yrast 1$^{+}$ state in comparison with the heaviest Z=N+2 system studied so far ($^{62}$Ge decay) is observed that may indicate increased np correlations in the T=0 channel. The β-decay strength deduced from the results is interpreted in terms of the proton-neutron quasiparticle random-phase approximation (pnQRPA) and also with a schematic model that includes isoscalar and isovector pairing in addition to quadrupole deformation. The application of this last model indicates an approximate realization of pseudo-SU(4) symmetry in this system.

Published
2022

99. Structure of As83, As85, and As87 : From semimagicity to γ softness

Author

Rezynkina, K., primary, Dao, D. D., additional, Duchêne, G., additional, Dudouet, J., additional, Nowacki, F., additional, Clément, E., additional, Lemasson, A., additional, Andreoiu, C., additional, Astier, A., additional, de Angelis, G., additional, de France, G., additional, Delafosse, C., additional, Deloncle, I., additional, Didierjean, F., additional, Dombradi, Z., additional, Ducoin, C., additional, Gadea, A., additional, Gottardo, A., additional, Guinet, D., additional, Jacquot, B., additional, Jones, P., additional, Konstantinopoulos, T., additional, Kuti, I., additional, Korichi, A., additional, Lenzi, S. M., additional, Li, G., additional, Le Blanc, F., additional, Lizarazo, C., additional, Lozeva, R., additional, Maquart, G., additional, Million, B., additional, Michelagnoli, C., additional, Napoli, D. R., additional, Navin, A., additional, Pérez-Vidal, R. M., additional, Petrache, C. M., additional, Pietralla, N., additional, Ralet, D., additional, Ramdhane, M., additional, Rejmund, M., additional, Stezowski, O., additional, Schmitt, C., additional, Sohler, D., additional, and Verney, D., additional

Published
2022
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100. The β-decay of 70Kr into 70Br: Restoration of the pseudo-SU(4) symmetry

Author

Vitéz-Sveiczer, A., primary, Algora, A., additional, Morales, A.I., additional, Rubio, B., additional, Kiss, G.G., additional, Sarriguren, P., additional, Van Isacker, P., additional, de Angelis, G., additional, Recchia, F., additional, Nishimura, S., additional, Agramunt, J., additional, Guadilla, V., additional, Montaner-Pizá, A., additional, Orrigo, S.E.A., additional, Horváth, A., additional, Napoli, D., additional, Lenzi, S., additional, Boso, A., additional, Phong, V.H., additional, Wu, J., additional, Söderström, P.-A., additional, Sumikama, T., additional, Suzuki, H., additional, Takeda, H., additional, Ahn, D.S., additional, Baba, H., additional, Doornebal, P., additional, Fukuda, N., additional, Inabe, N., additional, Isobe, T., additional, Kubo, T., additional, Kubono, S., additional, Sakurai, H., additional, Shimizu, Y., additional, Sidong, C., additional, Blank, B., additional, Ascher, P., additional, Gerbaux, M., additional, Goigoux, T., additional, Giovinazzo, J., additional, Grévy, S., additional, Kurtukián Nieto, T., additional, Magron, C., additional, Gelletly, W., additional, Dombrádi, Zs., additional, Fujita, Y., additional, Tanaka, M., additional, Aguilera, P., additional, Molina, F., additional, Eberth, J., additional, Diel, F., additional, Lubos, D., additional, Borcea, C., additional, Ganioglu, E., additional, Nishimura, D., additional, Oikawa, H., additional, Takei, Y., additional, Yagi, S., additional, Korten, W., additional, de France, G., additional, Davies, P., additional, Liu, J., additional, Lee, J., additional, Lokotko, T., additional, Kojouharov, I., additional, Kurz, N., additional, Shaffner, H., additional, and Petrovici, A., additional

Published
2022
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