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1. Spherical-oblate shape coexistence in $^{94}$Zr from a model-independent analysis

Author

Marchini, N., Rocchini, M., Zielinska, M., Nannini, A., Doherty, D. T., Gavrielov, N., Garrett, P. E., Hadynska-Klek, K., Goasduff, A., Testov, D., Bakes, S. D., Bazzacco, D., Benzoni, G., Berry, T., Brugnara, D., Camera, F., Catford, W. N., Chiari, M., Galtarossa, F., Gelli, N., Gottardo, A., Gozzelino, A., Illana, A., Keatings, J., Mengoni, D., Morrison, L., Napoli, D. R., Ottanelli, M., Ottanelli, P., Pasqualato, G., Recchia, F., Riccetto, S., Scheck, M., Siciliano, M., Dobon, J. J. Valiente, and Zanon, I.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

Low-lying states of $^{94}$Zr were investigated via low-energy multi-step Coulomb excitation. From the measured $\gamma$-ray yields, 13 reduced transition probabilities between low-spin states were determined, together with the spectroscopic quadrupole moments of the $2_{1,2}^+$ states. Based on this information, for the first time in the Zr isotopic chain, the shapes of the $0_{1,2}^+$ states including their deformation softness were inferred in a model-independent way using the quadrupole sum rules approach. The ground state of $^{94}$Zr possesses a rather diffuse shape associated with a spherical configuration, while the $0_2^+$ state is oblate and more strongly deformed. The observed features of shape coexistence in $^{94}$Zr are in agreement with Monte-Carlo shell-model predictions, and the present results are vital to refine the IBM-CM description of the Zr isotopes around $A\approx 100$ in terms of an intertwined quantum phase transition., Comment: 6 pages, 3 figures

Published
2024

2. High-precision spectroscopy of $^{20}$O benchmarking ab-initio calculations in light nuclei

Author

Zanon, I., Clément, E., Goasduff, A., Menéndez, J., Miyagi, T., Assié, M., Ciemała, M., Flavigny, F., Lemasson, A., Matta, A., Ramos, D., Rejmund, M., Achouri, L., Ackermann, D., Barrientos, D., Beaumel, D., Benzoni, G., Boston, A. J., Boston, H. C., Bottoni, S., Bracco, A., Brugnara, D., de France, G., de Sereville, N., Delaunay, F., Desesquelles, P., Didierjean, F., Domingo-Prato, C., Dudouet, J., Eberth, J., Fernández, D., Fougères, C., Gadea, A., Galtarossa, F., Girard-Alcindor, V., Gonzales, V., Gottardo, A., Hammache, F., Harkness-Brennan, L. J., Hess, H., Judson, D. S, Jungclaus, A., Kaşkaş, A., Kim, Y. H., Kuşoğlu, A., Labiche, M., Leblond, S., Lenain, C., Lenzi, S. M., Leoni, S., Li, H., Ljungvall, J., Lois-Fuentes, J., Lopez-Martens, A., Maj, A., Menegazzo, R., Mengoni, D., Michelagnoli, C., Million, B., Napoli, D. R., Nyberg, J., Pasqualato, G., Podolyak, Zs., Pullia, A., Quintana, B., Recchia, F., Regueira-Castro, D., Reiter, P., Rezynkina, K., Rojo, J. S., Salsac, M. D., Sanchis, E., Şenyiğit, M., Siciliano, M., Sohler, D., Stezowski, O., Theisen, Ch., Utepov, A., Valiente-Dobón, J. J., Verney, D., and Zielinska, M.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The excited states of unstable $^{20}$O were investigated via $\gamma$-ray spectroscopy following the $^{19}$O$(d,p)^{20}$O reaction at 8 $A$MeV. By exploiting the Doppler Shift Attenuation Method, the lifetime of the 2$^+_2$ and 3$^+_1$ states were firmly established. From the $\gamma$-ray branching and E2/M1 mixing ratios for transitions deexciting the 2$^+_2$ and 3$^+_1$ states, the B(E2) and B(M1) were determined. Various chiral effective field theory Hamiltonians, describing the nuclear properties beyond ground states, along with a standard USDB interaction, were compared with the experimentally obtained data. Such a comparison for a large set of $\gamma$-ray transition probabilities with the valence space in medium similarity renormalization group ab-initio calculations was performed for the first time in a nucleus far from stability. It was shown that the ab-initio approaches using chiral EFT forces are challenged by detailed high-precision spectroscopic properties of nuclei. The reduced transition probabilities were found to be a very constraining test of the performance of the ab-initio models., Comment: Supplemental Material available

Published
2024
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4. α decay of the neutron-deficient isotope At190

Author

Andreyev, AN, Seweryniak, D, Andel, B, Antalic, S, Doherty, DT, Korichi, A, Barton, C, Canete, L, Carpenter, MP, Clark, RM, Copp, PA, Cubiss, JG, Heery, J, Hrabar, Y, Huang, H, Huang, T, Karayonchev, V, Kondev, FG, Lauritsen, T, Liu, Z, Lotay, G, Müller-Gatermann, C, Nandi, S, Page, C, Potterveld, DH, Regan, PH, Reviol, W, Rudolph, D, Siciliano, M, Sidhu, RS, Sitarčík, A, Woods, PJ, Yue, Z, and Zhang, W

Subjects
Nuclear and Plasma Physics, Synchrotrons and Accelerators, Physical Sciences, Nuclear and plasma physics
Abstract

The α decay of the neutron-deficient At190 isotope was observed following the Rh103(Zr90,3n)At190 reaction at Argonne National Laboratory. The reaction products were separated from the beam using the Argonne Gas-Filled Analyzer and implanted into a double-sided Si strip detector. The spatial and temporal correlations between implanted nuclei and subsequent α decays towards the known daughter isotope Bi186 were used to identify and characterize At190 nuclei. Two possible decay scenarios are proposed for the At190→Bi186 decay.

Published
2023

5. Identification of different reaction channels in 6Li + 89Y experiment by the particles-γ coincidence measurement

Author

Wang M.L., Zhang G.X., Zhang G.L., Hu S.P., Qu W.W., Zhang H.Q., Huang Z., Xiang J.B., Yao Y.J., Sun H.B., Valiente-Dobón J.J., Testov D., Goasduff A., John P.R., Siciliano M., Galtarossa F., Francesco R., Mengoni D., and Bazzacco D.

Subjects
Physics, QC1-999
Abstract

This short paper presents the investigation of reaction mechanism induced by 6Li through a particle­γ coincidence measurement. The data have been taken from a 6Li+89Y experimentwhich is performed inINFN-LNL, Italy. In this experiment, the light charged particles are detected by a Si­ball, named EUCLIDES, and the γ rays are collected by a HPGe detector array, called GALILEO. In this contribution, scientific motivations, experimental details and some results, such as α­γ analysis, are presented.

Published
2019
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6. One-neutron stripping process in the 209Bi(6Li, 5Li)210Bi* reaction reaction

Author

Zhang, Gao-Long, Jiao, Zhen-Wei, Zhang, Guang-Xin, Cardozo, E. N., Paes, B., Hu, Shi-Peng, Qian, Jian-Qiang, Mengoni, Daniele, Qu, Wei-Wei, Li, Cong-Bo, Zheng, Yun, Zhang, Huan-Qiao, Sun, Hui-Bin, Wang, Nan, Zhang, Chun-Lei, Valiente-Dobón, J. J., Testov, D., Mazzocco, M., Gozzelino, A., Parascandolo, C., Pierroutsakou, D., La Commara, M., Goasduff, A., Bazzacco, D., Napoli, D. R., Galtarossa, F., Recchia, F., Illana, A., Bakes, S., Zanon, I., Aydin, S., de Angelis, G., Siciliano, M., Menegazzo, R., Lenzi, S. M., Akkoyun, S., Canto, L. F., and Lubian, J.

Published
2024
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7. Search for $^{22}$Na in novae supported by a novel method for measuring femtosecond nuclear lifetimes

Author

Fougères, C., Santos, F. de Oliveira, José, J., Michelagnoli, C., Clément, E., Kim, Y. H., Lemasson, A., Guimaraes, V., Barrientos, D., Bemmerer, D., Benzoni, G., Boston, A. J., Bottger, R., Boulay, F., Bracco, A., Celikovic, I., Cederwall, B., Ciemala, M., Delafosse, C., Domingo-Pardo, C., Dudouet, J., Eberth, J., Fulop, Z., Gonzalez, V., Goupil, J., Hess, H., Jungclaus, A., Kaskas, A., Korichi, A., Lenzi, S. M., Leoni, S., Li, H., Ljungvall, J., Lopez-Martens, A., Menegazzo, R., Mengoni, D., Million, B., Mrazek, J., Napoli, D. R., Navin, A., Nyberg, J., Podolyak, Zs., Pullia, A., Quintana, B., Ralet, D., Redon, N., Reiter, P., Rezynkina, K., Saillant, F., Salsac, M. D., Sanchez-Benitez, A. M., Sanchis, E., Senyigit, M., Siciliano, M., Smirnova, N. A., Sohler, D., Stanoiu, M., Theisen, Ch., Valiente-Dobon, J. J., Ujic, P., and Zielinska, M.

Subjects
Nuclear Experiment, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics
Abstract

Classical novae are thermonuclear explosions in stellar binary systems, and important sources of $^{26}$Al and $^{22}$Na. While gamma rays from the decay of the former radioisotope have been observed throughout the Galaxy, $^{22}$Na remains untraceable. The half-life of $^{22}$Na (2.6 yr) would allow the observation of its 1.275 MeV gamma-ray line from a cosmic source. However, the prediction of such an observation requires good knowledge of the nuclear reactions involved in the production and destruction of this nucleus. The $^{22}$Na($p,\gamma$)$^{23}$Mg reaction remains the only source of large uncertainty about the amount of $^{22}$Na ejected. Its rate is dominated by a single resonance on the short-lived state at 7785.0(7) keV in $^{23}$Mg. In the present work, a combined analysis of particle-particle correlations and velocity-difference profiles is proposed to measure femtosecond nuclear lifetimes. The application of this novel method to the study of the $^{23}$Mg states, combining magnetic and highly-segmented tracking gamma-ray spectrometers, places strong limits on the amount of $^{22}$Na produced in novae, explains its non-observation to date in gamma rays (flux < 2.5x$10^{-4}$ ph/(cm$^2$s)), and constrains its detectability with future space-borne observatories., Comment: 18 pages, 3 figures, 1 table

Published
2022
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8. Selection of different reaction channels in 6Li induced fusion reaction by a powerful combination of a charged particle array and a high-resolution gamma spectrometer

Author

Zhang G. X., Hu S. P., Zhang G. L., Zhang H. Q., Yao Y. J., Huang Z., Wang M. L., Sun H. B., Valiente-Dobòn J. J., Testov D., Goasduff A., John P. R., Siciliano M., Galtarosa F., Francesco R., Mengoni D., Bazzacco D., Li E. T., and Hao X.

Subjects
Physics, QC1-999
Abstract

Investigation of the breakup and transfer effect of weakly bound nuclei on the fusion process has been an interesting research topic in the past several years. In comparison with radioactive ion beam (RIB), the beam intensities of stable weakly bound nuclei such as 6,7Li and 9Be, which have significant breakup probability, are orders of magnitude higher. Precise fusion measurements induced by these nuclei have already been performed. However, the conclusion of reaction dynamics was not clear and has contradiction. In order to have a proper understanding of the influence of breakup and transfer of weakly bound projectiles on the fusion process, the 6Li+89Y experiment with incident energies of 22 MeV and 34 MeV was performed on Galileo array in combination with Si-ball EUCLIDES at Legnaro National Laboratory (LNL) in Italy. Using the coincidence by the charged particles and γ-rays, the different reaction channels can be clearly identified.

Published
2018
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9. Study of breakup and transfer of weakly bound nucleus 6Li to explore the low energy reaction dynamics

Author

Zhang G. L., Zhang G. X., Hu S. P., Zhang H. Q., Gomes P. R. S., Lubian J., Guo C. L., Wu X. G., Yang J. C., Zheng Y., Li C. B., He C. Y., Zhong J., Li G. S., Yao Y. J., Guo M. F., Sun H. B., Valiente-Dobòn J. J., Goasduff A., Siciliano M., Galtarosa F., Francesco R., Testov D., Mengoni D., Bazzacco D., John P. R., Qu W. W., Wang F., Zheng L., Yu L., Chen Q. M., Luo P. W., Li H. W., Wu Y. H., Zhou W. K., Zhu B. J., Li E. T., and Hao X.

Subjects
Physics, QC1-999
Abstract

Investigation of the breakup and transfer effect of weakly bound nuclei on the fusion process has been an interesting research topic in the past several years. However, owing to the low intensities of the presently available radioactive ion beam (RIB), it is difficult to clearly explore the reaction mechanisms of nuclear systems with unstable nuclei. In comparison with RIB, the beam intensities of stable weakly bound nuclei such as 6,7Li and 9Be, which have significant breakup probability, are orders of magnitude higher. Precise fusion measurements have already been performed with those stable weakly bound nuclei, and the effect of breakup of those nuclei on the fusion process has been extensively studied. Those nuclei indicated large production cross sections for particles other than the α + x breakup. The particles are originated from non-capture breakup (NCBU), incomplete fusion (ICF) and transfer processes. However, the conclusion of reaction dynamics was not clear and has the contradiction. In our previous experiments we have performed 6Li+96Zr and 154Sm at HI-13 Tandem accelerator of China Institute of Atomic Energy (CIAE) by using HPGe array. It is shown that there is a small complete fusion (CF) suppression on medium-mass target nucleus 96Zr different from about 35% suppression on heavier target nucleus 154Sm at near-barrier energies. It seems that the CF suppression factor depends on the charge of target nuclei. We also observed one neutron transfer process. However, the experimental data are scarce for medium-mass target nuclei. In order to have a proper understanding of the influence of breakup and transfer of weakly bound projectiles on the fusion process, we performed the 6Li+89Y experiment with incident energies of 22 MeV and 34 MeV on Galileo array in cooperation with Si-ball EUCLIDES at Legnaro National Laboratory (LNL) in Italy. Using particle-particle and particle-γ coincidences, the different reaction mechanisms can be clearly explored.

Published
2017
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11. Narrow resonances in the continuum of the unbound nucleus $^{15}$F

Author

Girard-Alcindor, V., Mercenne, A., Stefan, I., Santos, F. de Oliveira, Michel, N., Płoszajczak, M., Assié, M., Lemasson, A., Clément, E., Flavigny, F., Matta, A., Ramos, D., Rejmund, M., Dudouet, J., Ackermann, D., Adsley, P., Assunção, M., Bastin, B., Beaumel, D., Benzoni, G., Borcea, R., Boston, A. J., Cáceres, L., Cederwall, B., Celikovic, I., Chudoba, V., Ciemala, M., Collado, J., Crespi, F. C. L., D'Agata, G., De France, G., Delaunay, F., Diget, C., Domingo-Pardo, C., Eberth, J., Fougères, C., Franchoo, S., Galtarossa, F., Georgiadou, A., Gibelin, J., Giraud, S., González, V., Goyal, N., Gottardo, A., Goupil, J., Grévy, S., Guimaraes, V., Hammache, F., Harkness-Brennan, L. J., Hess, H., Oliver, D. S. Judson, Kamalou, O., Kameneyero, A., Kiener, J., Korten, W., Koyama, S., Labiche, M., Lalanne, L., Lapoux, V., Leblond, S., Lefevre, A., Lenain, C., Leoni, S., Li, H., Lopez-Martens, A., Maj, A., Matea, I., Menegazzo, R., Mengoni, D., Meyer, A., Million, B., Monteagudo, B., Morfouace, P., Mrazek, J., Niikura, M., Piot, J., Podolyak, Zs., Portail, C., Pullia, A., Quintana, B., Recchia, F., Reiter, P., Rezynkina, K., Roger, T., Rojo, J. S., Rotaru, F., Salsac, M. D., Benítez, A. M. Sánchez, Sanchis, E., Şenyigit, M., de Séréville, N., Siciliano, M., Simpson, J., Sohler, D., Sorlin, O., Stanoiu, M., Stodel, C., Suzuki, D., Theisen, C., Thomas, J. C., Ujic, P., Valiente-Dobón, J. J., and Zielińska, M.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The structure of the unbound $^{15}$F nucleus is investigated using the inverse kinematics resonant scattering of a radioactive $^{14}$O beam impinging on a CH$_2$ target. The analysis of $^{1}$H($^{14}$O,p)$^{14}$O and $^{1}$H($^{14}$O,2p)$^{13}$N reactions allowed the confirmation of the previously observed narrow $1/2^{-}$ resonance, near the two-proton decay threshold, and the identification of two new narrow 5/2$^{-}$ and 3/2$^{-}$ resonances. The newly observed levels decay by 1p emission to the ground of $^{14}$O, and by sequential 2p emission to the ground state (g.s.) of $^{13}$N via the $1^-$ resonance of $^{14}$O. Gamow shell model (GSM) analysis of the experimental data suggests that the wave functions of the 5/2$^{-}$ and 3/2$^{-}$ resonances may be collectivized by the continuum coupling to nearby 2p- and 1p- decay channels. The observed excitation function $^{1}$H($^{14}$O,p)$^{14}$O and resonance spectrum in $^{15}$F are well reproduced in the unified framework of the GSM., Comment: 7 pages, 4 figures

Published
2021

12. Shape evolution in even-mass 98-104γγZr isotopes via lifetime measurements using the 98-104γγ-coincidence technique

Author

Pasqualato, G., Ansari, S., Heines, J. S., Modamio, V., Görgen, A., Korten, W., Ljungvall, J., Clément, E., Dudouet, J., Lemasson, A., Rodríguez, 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., Söderström, P.-A., Theisen, C., Tornyi, T., Vandebrouck, M., Witt, W., Zielińska, M., Barrientos, D., Bednarczyk, P., Benzoni, G., Boston, A. J., Boston, H. C., Bracco, A., Cederwall, B., Ciemała, M., de France, G., Domingo-Pardo, C., Eberth, J., Gadea, A., González, 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, J., Podolyák, Zs., Pullia, A., Recchia, F., Reiter, P., Rezynkina, K., Salsac, M. D., Sanchis, E., Şenyiğit, M., Siciliano, M., Simpson, J., Sohler, D., Stezowski, O., Valiente-Dobón, J. J., and Verney, D.

Published
2023
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13. The MUGAST-AGATA-VAMOS campaign : set-up and performance

Author

Assié, M., Clément, E., Lemasson, A., Ramos, D., Raggio, A., Zanon, I., Galtarossa, F., Lenain, C., Casal, J., Flavigny, F., Matta, A., Mengoni, D., Beaumel, D., Blumenfeld, Y., Borcea, R., Brugnara, D., Catford, W., de Oliveira, F., De Séréville, N., Didierjean, F., Diget, C. Aa., Dudouet, J., Fernandez-Dominguez, B., Fougères, C., Frémont, G., Girard-Alcindor, V., Giret, A., Goasduff, A., Gottardo, A., Goupil, J., Hammache, F., John, P. R., Korichi, A., Lalanne, L., Leblond, S., Lefevre, A., Legruel, F., Menager, L., Million, B., Nicolle, C., Noury, F., Rauly, E., Rezynkina, K., Rindel, E., Rojo, J. S., Siciliano, M., Stanoiu, M., Stefan, I., and Vatrinet, L.

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

The MUGAST-AGATA-VAMOS set-up at GANIL combines the MUGAST highly-segmented silicon array with the state-of-the-art AGATA array and the large acceptance VAMOS spectrometer. The mechanical and electronics integration copes with the constraints of maximum efficiency for each device, in particular {\gamma}-ray transparency for the silicon array. This complete set-up offers a unique opportunity to perform exclusive measurements of direct reactions with the radioactive beams from the SPIRAL1 facility. The performance of the set-up is described through its commissioning and two examples of transfer reactions measured during the campaign. High accuracy spectroscopy of the nuclei of interest, including cross-sections and angular distributions, is achieved through the triple-coincidence measurement. In addition, the correction from Doppler effect of the {\gamma}-ray energies is improved by the detection of the light particles and the use of two-body kinematics and a full rejection of the background contributions is obtained through the identification of heavy residues. Moreover, the system can handle high intensity beams (up to 108 pps). The particle identification based on the measurement of the time-of-flight between MUGAST and VAMOS and the reconstruction of the trajectories is investigated., Comment: 13 pages, 18 figures

Published
2021
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14. Lifetime Measurements in the Even-Even $^{102-108}$Cd Isotopes

Author

Siciliano, M., Valiente-Dobón, J. J., Goasduff, A., Rodríguez, T. R., Bazzacco, D., Benzoni, G., Braunroth, T., Cieplicka-Oryńczak, N., Clément, E., Crespi, F. C. L., de France, G., Doncel, M., Ertürk, S., Fransen, C., Gadea, A., Georgiev, G., Goldkuhle, A., Jakobsson, U., Jaworski, G., John, P. R., Kuti, I., Lemasson, A., Li, H., Lopez-Martens, A., Marchi, T., Mengoni, D., Michelagnoli, C., Mijatović, T., Müller-Gatermann, C., Napoli, D. R., Nyberg, J., Palacz, M., Pérez-Vidal, R. M., Sayği, B., Sohler, D., Szilner, S., and Testov, D.

Subjects
Nuclear Experiment
Abstract

The heaviest N=Z doubly-magic nucleus, $^{100}$Sn, and the neighboring nuclei offer unique opportunities to investigate the properties of nuclear interaction in extreme conditions. In particular, the Cd isotopes are expected to present features similar to those found in the Sn isotopic chain, since they have only two proton holes in the Z=50 shell. In this manuscript, the lifetime measurements of low-lying states in the even-mass $^{102-108}$Cd is presented. Thanks to the powerful detection capabilities of AGATA array and VAMOS++ spectrometer, the unusual employment of multi-nucleon transfer reactions permitted to investigate the first 2$^+$ and 4$^+$ states in all these nuclei, together with various deformed bands in $^{106}$Cd. The results were interpreted in the context of new state-of-the-art beyond-mean-field calculations, using the symmetry-conserving configuration-mixing approach. Despite the similarities in the electromagnetic properties of the low-lying states, there is a fundamental structural difference between the ground-state bands in the Z=48 and Z=50 isotopes. The comparison between experimental and theoretical results revealed a rotational character of the Cd nuclei, which have prolate-deformed ground states with $\beta_2 \approx 0.2$. At this deformation Z=48 becomes a closed-shell configuration, which is favored with respect to the spherical one., Comment: V1 : 14 pages, 12 figures. V2 : 16 pages, 11 figures. V3 : 16 pages, 11 figures (figure 11 corrected); triaxiality evaluated with "quadrupole sum rule". submitted to Phys.Rev.C

Published
2021
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15. Position uncertainties of AGATA pulse-shape analysis estimated via the boostrapping method

Author

Siciliano, M., Ljungvall, J., Goasduff, A., Lopez-Martens, A., and Zielińska, M.

Subjects
Nuclear Experiment
Abstract

The unprecedented capabilities of state-of-the-art segmented germanium-detector arrays, such as AGATA and GRETA, derive from the possibility of performing pulse-shape analysis. The comparison of the net- and transient-charge signals with databases via grid-search methods allows the identification of the $\gamma$-ray interaction points within the segment volume. Their precise determination is crucial for the subsequent reconstruction of the $\gamma$-ray paths within the array via tracking algorithms, and hence the performance of the spectrometer. In this paper the position uncertainty of the deduced interaction point is investigated using the bootstrapping technique applied to $^{60}$Co radioactive-source data. General features of the extracted position uncertainty are discussed as well as its dependence on various quantities, e.g. the deposited energy, the number of firing segments and the segment geometry., Comment: 9 pages, 8 figures

Published
2021
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16. Shape coexistence in the neutron-deficient $^{188}$Hg investigated via lifetime measurements

Author

Siciliano, M., Zanon, I., Goasduff, A., John, P. R., Rodríguez, T. R., Péru, S., Deloncle, I., Libert, J., Zielińska, M., Ashad, D., Bazzacco, D., Benzoni, G., Birkenbach, B., Boso, A., Braunroth, T., Cicerchia, M., Cieplicka-Oryńczak, N., Colucci, G., Davide, F., de Angelis, G., de Canditiis, B., Gadea, A., Gaffney, L. P., Galtarossa, F., Gozzelino, A., Hadyńska-Klȩk, K., Jaworski, G., Koseoglou, P., Lenzi, S. M., Melon, B., Menegazzo, R., Mengoni, D., Nannini, A., Napoli, D. R., Pakarinen, J., Quero, D., Rath, P., Recchia, F., Rocchini, M., Testov, D., Valiente-Dobón, J. J., Vogt, A., Wiederhold, J., and Witt, W.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

Shape coexistence in the $Z \approx 82$ region has been established in mercury, lead and polonium isotopes. Even-even mercury isotopes with $100 \leq N \leq 106$ present multiple fingerprints of this phenomenon, which seems to be no longer present for $N \geq 110$. According to a number of theoretical calculations, shape coexistence is predicted in the $^{188}$Hg isotope. The $^{188}$Hg nucleus was populated using two different fusion-evaporation reactions with two targets, $^{158}$Gd and $^{160}$Gd, and a beam of $^{34}$S, provided by the Tandem-ALPI accelerators complex at the Laboratori Nazionali di Legnaro. The channels of interest were selected using the information from the Neutron Wall array, while the $\gamma$ rays were detected using the GALILEO $\gamma$-ray array. The lifetimes of the excited states were determined using the Recoil Distance Doppler-Shift method, employing the dedicated GALILEO plunger device. Using the two-bands mixing and rotational models, the deformation of the pure configurations was obtained from the experimental results. The extracted transition strengths were compared with those calculated with the state-of-the-art symmetry-conserving configuration-mixing (SCCM) and five-dimentional collective Hamiltonian (5DCH) approaches in order to shed light on the nature of the observed structures in the $^{188}$Hg nucleus. An oblate, a normal- and a super-deformed prolate bands were predicted and their underlying shell structure was also discussed., Comment: v1: 13 pages, 10 figures, comparison between IBM-CM and SCCM calculations; v2: 16 pages, 13 figures, discussion on the mixing amplitudes from the experimental B(E2) values, comparison between SCCM and 5DCH calculations

Published
2020
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17. The rate of the astrophysical 48Cr(p,γ)49Mn reaction and its influence on the potential A = 48 waiting point in the rp process

Author

O'Shea, C., primary, Lotay, G., additional, Doherty, D.T., additional, Seweryniak, D., additional, Lau, R., additional, Bartram, G., additional, Byrne, S., additional, Canete, L., additional, Carpenter, M.P., additional, Chipps, K.A., additional, Copp, P.A., additional, Cousins, C., additional, Henderson, J., additional, Huang, T., additional, Jayatissa, H., additional, Kondev, F., additional, Müller-Gatermann, C., additional, Pain, S.D., additional, Paxman, C., additional, Reed, B.J., additional, Reviol, W., additional, Rogers, A.M., additional, Russell, R., additional, Schatz, H., additional, and Siciliano, M., additional

Published
2024
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18. Pairing-quadrupole interplay in the neutron-deficient tin nuclei: first lifetime measurements of low-lying states in $^{106,108}$Sn

Author

Siciliano, M., Valiente-Dobón, J. J., Goasduff, A., Nowacki, F., Zuker, A. P., Bazzacco, D., Lopez-Martens, A., Clément, E., Benzoni, G., Braunroth, T., Cieplicka-Oryńczak, N., Crespi, F. C. L., de France, G., Doncel, M., Ertürk, S., Fransen, C., Gadea, A., Georgiev, G., Goldkuhle, A., Jakobsson, U., Jaworski, G., John, P. R., Kuti, I., Lemasson, A., Li, H., Marchi, T., Mengoni, D., Michelagnoli, C., Mijatović, T., Müller-Gatermann, C., Napoli, D. R., Nyberg, J., Palacz, M., Pérez-Vidal, R. M., Sayği, B., Sohler, D., Szilner, S., Testov, D., Barrientos, D., Birkenbach, B., Boston, H. C., Boston, A. J., Cederwall, B., Cullen, D. M., Collado, J., Désesquelles, P., Dudouet, J., Domingo-Pardo, C., Eberth, J., Egea-Canet, F. J., González, V., Judson, D. S., Harkness-Brennan, L. J., Hess, H., Jungclaus, A., Korten, W., Labiche, M., Lefevre, A., Leoni, S., Maj, A., Menegazzo, R., Million, B., Pullia, A., Recchia, F., Reiter, P., Salsac, M. D., Sanchis, E., Stezowski, O., Theisen, Ch., and Zielińska, M.

Subjects
Nuclear Experiment
Abstract

The lifetimes of the low-lying excited states $2^+$ and $4^+$ have been directly measured in the neutron-deficient $^{106,108}$Sn isotopes. The nuclei were populated via a deep-inelastic reaction and the lifetime measurement was performed employing a differential plunger device. The emitted $\gamma$ rays were detected by the AGATA array, while the reaction products were uniquely identified by the VAMOS++ magnetic spectrometer. Large-Scale Shell-Model calculations with realistic forces indicate that, independently of the pairing content of the interaction, the quadrupole force is dominant in the $B(E2; 2_1^+ \to 0_{g.s.}^+)$ values and it describes well the experimental pattern for $^{104-114}$Sn; the $B(E2; 4_1^+ \to 2_1^+)$ values, measured here for the first time, depend critically on a delicate pairing-quadrupole balance, disclosed by the very precise results in $^{108}$Sn. This result provides insight in the hitherto unexplained $B(E2; 4_1^+ \to 2_1^+)/B(E2; 2_1^+ \to 0_{g.s.}^+) < 1$ anomaly., Comment: V1: 6 pages, 3 figures, 1 table, theoretical interpretation described in detail in the arXiv paper of A.P.Zuker (cross-reference) V2: added reference to A.P. Zuker paper (arXiv:1905.11479)

Published
2019
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19. Diversity of shapes and rotations in the gamma-soft 130Ba nucleus: first observation of a t-band in the A=130 mass region

Author

Petrache, C. M., Walker, P. M., Guo, S., Chen, Q. B., Frauendorf, S., Liu, Y. X., Wyss, R. A., Mengoni, D., Qiang, Y., Astier, A., Dupont, E., Li, R., Lv, B. F., Zheng, K. K., Bazzacco, D., Boso, A., Goasduff, A., Recchia, 8 F., Testov, D., Galtarossa, F., Jaworski, G., Napoli, D. R., Riccetto, S., Siciliano, M., Valiente-Dobon, J. J., Liu, M. L., Zhou, X. H., Wang, J. G., Andreoiu, C., Garcia, F. H., Ortner, K., Whitmore, K., Back, T., Cederwall, B., Lawrie, E. A., Kuti, I., Sohler, D., Timar, J., Marchlewski, T., Srebrny, J., and Tucholski, A.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

Several new bands have been identified in 130Ba, among which there is one with band-head spin 8+. Its properties are in agreement with the Fermi-aligned \nu h11/2^2 , 7/2+[523] \otimes 9/2-[514] Nilsson configuration. This is the first observation of a two-quasiparticle t-band in the A=130 mass region. The t-band is fed by a dipole band involving two additional h11/2 protons. The odd-spin partners of the proton and neutron S-bands and the ground-state band at high spins are also newly identified. The observed bands are discussed using several theoretical models, which strongly suggest the coexistence of prolate and oblate shapes polarized by rotation aligned two-proton and two-neutron configurations, as well as prolate collective rotations around axes with different orientations. With the new results, 130Ba presents one of the best and most complete sets of collective excitations that a gamma-soft nucleus can manifest at medium and high spins, revealing a diversity of shapes and rotations for the nuclei in the A = 130 mass region., Comment: 8 pages, 7 figures

Published
2019
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20. High resolution $\gamma$-ray spectroscopy using GALILEO array

Author

Testov, D., Valiente-Dobón, J. J., Mengoni, D., Recchia, F., Goasduff, A., Boso, A., Lenzi, S., de Angelis, G., Bakes, S., Boiano, C., Cederwall, B., Colucci, G., Cicerchia, M., Čolović, P., Didierjean, F., Doncel, M., {n}as, J. A. Due\, Galtarossa, F., Gozzelino, A., Hadyńska-Klȩk, K., Isocrate, R., Jaworski, G., John, P. R., Liu, H., Lunardi, S., Menegazzo, R., Mentana, A., Modamio, V., Nannini, A., Napoli, D. R., Palacz, M., Pasqualato, G., Rocchini, M., Riccetto, S., Saygi, B., Sahin, E., Siciliano, M., Sobolev, Yu., and Szilner, S.

Subjects
Nuclear Experiment
Abstract

The GALILEO $\gamma$-ray spectrometer has been constructed at the Legnaro National Laboratory of INFN (LNL-INFN). It can be coupled to advanced ancillary devices which allows nuclear structure studies employing the variety of in-beam $\gamma$-ray spectroscopy methods. Such studies benefit from reactions induced by the intense stable beams delivered by the Tandem-ALPI-PIAVE accelerator complex and by the radioactive beams which will be provided by the SPES facility. In this paper we outline two experiments performed within the experimental campaign at GALILEO coupled to the EUCLIDES Si-ball and the Neutron Wall array. The first one was aimed at spectroscopic studies in A=31 mirror nuclei and the second one at measurements of lifetimes of excited states in nuclei in the vicinity of $^{100}$Sn., Comment: The IX International Symposium on EXOtic Nuclei (EXON-2018)

Published
2019

23. Determination of Ambroxol Levels in Plasma and Cerebrospinal Fluid by Online Solid-Phase Extraction Coupled with Liquid Chromatography-Tandem Mass Spectrometry in GBA-Parkinson Disease Patients

Author

Franco, V., primary, Palmisani, M., additional, Colucci, F., additional, De Micco, R., additional, Aloisio, S., additional, Cazzaniga, F., additional, Cerri, S., additional, Cuconato, G., additional, Devigili, G., additional, Franciotta, D., additional, Eleopra, R., additional, Elia, A., additional, Garavaglia, B., additional, Andreasi, N. Golfrè, additional, Invernizzi, F., additional, Leta, V., additional, Moda, F., additional, Mitrotti, P., additional, Picascia, M., additional, Reale, C., additional, Romito, L., additional, Siciliano, M., additional, Stiuso, R., additional, Tessitore, A., additional, Valente, E.M., additional, Avenali, M., additional, and Cilia, R., additional

Published
2024
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24. Testing the capability of low-energy light ions identification of the TRACE silicon detectors

Author

Cieplicka-Oryńczak, N., Mengoni, D., Ciemała, M., Leoni, S., Fornal, B., Dueñas, J. A., Brambilla, S., Boiano, C., John, P. R., Bazzacco, D., Benzoni, G., Bocchi, G., Capra, S., Crespi, F. C. L., Goasduff, A., Hadyńska-Klęk, K., Iskra, Ł. W., Jaworski, G., Recchia, F., Siciliano, M., Testov, D., and Valiente-Dobón, J. J.

Subjects
Physics - Instrumentation and Detectors
Abstract

The in-beam tests of two Si pixel type TRACE detectors have been performed at Laboratori Nazionali di Legnaro (Italy). The aim was to investigate the possibility of identifying heavy-ion reactions products with mass A~10 at low kinetic energy, i.e., around 10 MeV. Two separate read-out chains, digital and analog, were used. The Pulse Shape Analysis technique was employed to obtain the identification matrices for the digitally processed part of the data. Separation in both charge and mass was obtained, however, the $\alpha$ particles contaminated significantly the recorded data in the lower energy part. Due to this effect, the identification of the light products ($^{7,6}$Li isotopes) could be possible down only to ~20 MeV, Comment: 6 pages, 4 figures

Published
2018

26. The GALILEO [formula omitted]-ray array at the Legnaro National Laboratories

Author

Goasduff, A., Mengoni, D., Recchia, F., Valiente-Dobón, J.J., Menegazzo, R., Benzoni, G., Barrientos, D., Bellato, M., Bez, N., Biasotto, M., Blasi, N., Boiano, C., Boso, A., Bottoni, S., Bracco, A., Brambilla, S., Brugnara, D., Camera, F., Capra, S., Capsoni, A., Cocconi, P., Coelli, S., Cortés, M.L., Crespi, F.C.L., de Angelis, G., Egea, F.J., Fanin, C., Fantinel, S., Gadea, A., Gamba, E.R., Gambalonga, A., Gesmundo, C., Gosta, G., Gottardo, A., Gozzelino, A., Gregor, E.T., Gulmini, M., Ha, J., Hadyńska-Klȩk, K., Illana, A., Isocrate, R., Jaworski, G., John, P.R., Lenzi, S.M., Leoni, S., Lunardi, S., Magalini, M., Marchini, N., Million, B., Modamio, V., Nannini, A., Napoli, D.R., Pasqualato, G., Pellumaj, J., Pérez-Vidal, R.M., Pigliapoco, S., Polettini, M., Porzio, C., Pullia, A., Ramina, L., Rampazzo, G., Rampazzo, M., Rebeschini, M., Rezynkina, K., Rocchini, M., Romanato, M., Rosso, D., Saltarelli, A., Scarcioffolo, M., Siciliano, M., Testov, D.A., Tomasella, D., Tomasi, F., Toniolo, N., Ur, C.A., Ventura, S., Veronese, F., Viscione, E., Volpe, V., Wieland, O., Zanon, I., Ziliani, S., Zhang, G., and Bazzacco, D.

Published
2021
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27. Structure of Low-spin States in \(^{45}\)Sc Studied via Coulomb Excitation

Author

Matejska-Minda, M., primary, Napiorkowski, P.J., additional, Sieja, K., additional, Bednarczyk, P., additional, Abraham, T., additional, Agarwal, A., additional, Ahmed, I., additional, Bhattacharya, S., additional, Bhowmik, R.K., additional, Doherty, D.T., additional, Dutt, S., additional, Hadyńska-Klęk, K., additional, Iwanicki, J., additional, Jhingan, A., additional, Kaur, J., additional, Kicińska-Habior, M., additional, Kisieliński, M., additional, Komorowska, M., additional, Kowalczyk, M., additional, Kumar, M., additional, Kumar, R., additional, Kumar, S., additional, Kumar, D., additional, Maj, A., additional, Marchlewski, T., additional, Matuszczak, P., additional, Nanal, V., additional, Nannini, A., additional, Palacz, M., additional, Palit, R., additional, Próchniak, L., additional, Rai, N.K., additional, Rocchini, M., additional, Saxena, M., additional, Satuła, W., additional, Shuaib, M., additional, Siciliano, M., additional, Sood, A., additional, Srebrny, J., additional, Stolarz, A., additional, Styczeń, J., additional, Trivedi, T., additional, Tyagi, A.K., additional, Wasilewska, B., additional, Wollersheim, H.J., additional, Wrzosek-Lipska, K., additional, and Zielińska, M., additional

Published
2024
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28. Investigation of the \(\gamma \)-ray Properties of the \(2^+\) States in \(^{14}\)C

Author

Corbari, G., primary, Bottoni, S., additional, Ciemała, M., additional, Crespi, F.C.L., additional, Fornal, B., additional, Leoni, S., additional, Janssens, R.V.F., additional, Pain, S.D., additional, Siciliano, M., additional, Albanese, E., additional, Ayangeakaa, A.D., additional, Benzoni, G., additional, Carmichael, S., additional, Carpenter, M., additional, Chipps, K., additional, Cieplicka-Oryńczak, N., additional, Cizewski, A., additional, Copp, P., additional, Febbraro, M., additional, Forson, J., additional, Gamba, E., additional, Garland, H., additional, Gilardy, G., additional, Hooker, J., additional, Iskra, Ł.W., additional, Jayatissa, H., additional, Kondev, F., additional, Jones, K., additional, Jones, M.D., additional, Lauritsen, T., additional, Li, J., additional, Little, D., additional, Million, B., additional, Müller-Gatermann, C., additional, Palmisano, A., additional, Polettini, M., additional, Porzio, C., additional, Ratkiewicz, A., additional, Reviol, W., additional, Sensharma, N., additional, Seweryniak, D., additional, Sims, H., additional, Stolz, S., additional, Toomey, R., additional, Ummel, C., additional, Wieland, O., additional, Wilson, G., additional, Wu, J., additional, Zhu, S., additional, and Ziliani, S., additional

Published
2024
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30. Applications of Rutherford backscattering analysis methods to nuclear physics experiments

Author

Rocchini, M., Chiari, M., Pasquali, E., Nannini, A., Hadyńska-Klęk, K., Sona, P., Bazzacco, D., Benzoni, G., Camera, F., Czelusniak, C., Doherty, D.T., Goasduff, A., John, P.R., Komorowska, M., Marchini, N., Matejska-Minda, M., Melon, B., Mengoni, D., Napiorkowski, P.J., Ottanelli, M., Perego, A., Recchia, F., Siciliano, M., Sottili, L., Testov, D., Valiente-Dobón, J.J., Wrzosek-Lipska, K., and Zielińska, M.

Published
2021
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31. High-spin structures in Xe 132 and Xe 133 and evidence for isomers along the N=79 isotones

Author

Vogt, A, Siciliano, M, Birkenbach, B, Reiter, P, Hadyńska-Klȩk, K, Wheldon, C, Valiente-Dobón, JJ, Teruya, E, Yoshinaga, N, Arnswald, K, Bazzacco, D, Blazhev, A, Bracco, A, Bruyneel, B, Chakrawarthy, RS, Chapman, R, Cline, D, Corradi, L, Crespi, FCL, Cromaz, M, De Angelis, G, Eberth, J, Fallon, P, Farnea, E, Fioretto, E, Fransen, C, Freeman, SJ, Fu, B, Gadea, A, Gelletly, W, Giaz, A, Görgen, A, Gottardo, A, Hayes, AB, Hess, H, Hetzenegger, R, Hirsch, R, Hua, H, John, PR, Jolie, J, Jungclaus, A, Karayonchev, V, Kaya, L, Korten, W, Lee, IY, Leoni, S, Liang, X, Lunardi, S, MacChiavelli, AO, Menegazzo, R, Mengoni, D, Michelagnoli, C, Mijatović, T, Montagnoli, G, Montanari, D, Müller-Gatermann, C, Napoli, D, Pearson, CJ, Podolyák, Z, Pollarolo, G, Pullia, A, Queiser, M, Recchia, F, Regan, PH, Régis, JM, Saed-Samii, N, Şahin, E, Scarlassara, F, Seidlitz, M, Siebeck, B, Sletten, G, Smith, JF, Söderström, PA, Stefanini, AM, Stezowski, O, Szilner, S, Szpak, B, Teng, R, Ur, C, Warner, DD, Wolf, K, Wu, CY, and Zell, KO

Abstract

The transitional nuclei Xe132 and Xe133 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in Xe136+Pb208 MNT reactions employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (ii) in the Xe136+Pt198 MNT reaction employing the GAMMASPHERE spectrometer in combination with the gas-detector array CHICO, and (iii) as an evaporation residue after a Te130(α,xn)Xe134-xn fusion-evaporation reaction employing the HORUS γ-ray array at the University of Cologne. The high-spin level schemes are considerably extended above the Jπ=(7-) and (10+) isomers in Xe132 and above the 11/2- isomer in Xe133. The results are compared to the high-spin systematics of the Z=54 as well as the N=78 and N=79 chains. Furthermore, evidence is found for a long-lived (T1/2â‰1μs) isomer in Xe133 which closes a gap along the N=79 isotones. Shell-model calculations employing the SN100PN and PQM130 effective interactions reproduce the experimental findings and provide guidance to the interpretation of the observed high-spin features.

Published
2017

32. High-spin structures in Xe132 and Xe133 and evidence for isomers along the N=79 isotones

Author

Vogt, A, Siciliano, M, Birkenbach, B, Reiter, P, Hadyńska-Klęk, K, Wheldon, C, Valiente-Dobón, JJ, Teruya, E, Yoshinaga, N, Arnswald, K, Bazzacco, D, Blazhev, A, Bracco, A, Bruyneel, B, Chakrawarthy, RS, Chapman, R, Cline, D, Corradi, L, Crespi, FCL, Cromaz, M, de Angelis, G, Eberth, J, Fallon, P, Farnea, E, Fioretto, E, Fransen, C, Freeman, SJ, Fu, B, Gadea, A, Gelletly, W, Giaz, A, Görgen, A, Gottardo, A, Hayes, AB, Hess, H, Hetzenegger, R, Hirsch, R, Hua, H, John, PR, Jolie, J, Jungclaus, A, Karayonchev, V, Kaya, L, Korten, W, Lee, IY, Leoni, S, Liang, X, Lunardi, S, Macchiavelli, AO, Menegazzo, R, Mengoni, D, Michelagnoli, C, Mijatović, T, Montagnoli, G, Montanari, D, Müller-Gatermann, C, Napoli, D, Pearson, CJ, Podolyák, Zs, Pollarolo, G, Pullia, A, Queiser, M, Recchia, F, Regan, PH, Régis, J-M, Saed-Samii, N, Şahin, E, Scarlassara, F, Seidlitz, M, Siebeck, B, Sletten, G, Smith, JF, Söderström, P-A, Stefanini, AM, Stezowski, O, Szilner, S, Szpak, B, Teng, R, Ur, C, Warner, DD, Wolf, K, Wu, CY, and Zell, KO

Subjects
Nuclear and Plasma Physics, Synchrotrons and Accelerators, Physical Sciences, Nuclear and plasma physics
Abstract

The transitional nuclei Xe132 and Xe133 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in Xe136+Pb208 MNT reactions employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (ii) in the Xe136+Pt198 MNT reaction employing the GAMMASPHERE spectrometer in combination with the gas-detector array CHICO, and (iii) as an evaporation residue after a Te130(α,xn)Xe134-xn fusion-evaporation reaction employing the HORUS γ-ray array at the University of Cologne. The high-spin level schemes are considerably extended above the Jπ=(7-) and (10+) isomers in Xe132 and above the 11/2- isomer in Xe133. The results are compared to the high-spin systematics of the Z=54 as well as the N=78 and N=79 chains. Furthermore, evidence is found for a long-lived (T1/2â‰1μs) isomer in Xe133 which closes a gap along the N=79 isotones. Shell-model calculations employing the SN100PN and PQM130 effective interactions reproduce the experimental findings and provide guidance to the interpretation of the observed high-spin features.

Published
2017

33. Isomers and high-spin structures in the N=81 isotones Xe 135 and Ba 137

Author

Vogt, A, Birkenbach, B, Reiter, P, Blazhev, A, Siciliano, M, Hadyńska-Klȩk, K, Valiente-Dobón, JJ, Wheldon, C, Teruya, E, Yoshinaga, N, Arnswald, K, Bazzacco, D, Bowry, M, Bracco, A, Bruyneel, B, Chakrawarthy, RS, Chapman, R, Cline, D, Corradi, L, Crespi, FCL, Cromaz, M, De Angelis, G, Eberth, J, Fallon, P, Farnea, E, Fioretto, E, Freeman, SJ, Fu, B, Gadea, A, Geibel, K, Gelletly, W, Gengelbach, A, Giaz, A, Görgen, A, Gottardo, A, Hayes, AB, Hess, H, Hirsch, R, Hua, H, John, PR, Jolie, J, Jungclaus, A, Kaya, L, Korten, W, Lee, IY, Leoni, S, Lewandowski, L, Liang, X, Lunardi, S, Macchiavelli, AO, Menegazzo, R, Mengoni, D, Michelagnoli, C, Mijatović, T, Montagnoli, G, Montanari, D, Müller-Gatermann, C, Napoli, D, Pearson, CJ, Pellegri, L, Podolyák, Z, Pollarolo, G, Pullia, A, Queiser, M, Radeck, F, Recchia, F, Regan, PH, Rosiak, D, Saed-Samii, N, Şahin, E, Scarlassara, F, Schneiders, D, Seidlitz, M, Siebeck, B, Sletten, G, Smith, JF, Söderström, PA, Stefanini, AM, Steinbach, T, Stezowski, O, Szilner, S, Szpak, B, Teng, R, Ur, C, Vandone, V, Warner, DD, Wiens, A, Wu, CY, and Zell, KO

Abstract

The high-spin structures and isomers of the N=81 isotones Xe135 and Ba137 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in Xe136+U238 and (ii) Xe136+Pb208 MNT reactions employing the high-resolution Advanced Gamma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (iii) in the Xe136+Pt198 MNT reaction employing the γ-ray array GAMMASPHERE in combination with the gas-detector array CHICO, and (iv) via a B11+Te130 fusion-evaporation reaction with the HORUS γ-ray array at the University of Cologne. The high-spin level schemesof Xe135 and Ba137 are considerably extended to higher energies. The 2058-keV (19/2-) state in Xe135 is identified as an isomer, closing a gap in the systematics along the N=81 isotones. Its half-life is measured to be 9.0(9) ns, corresponding to a reduced transition probability of B(E2,19/2-→15/2-)=0.52(6) W.u. The experimentally deduced reduced transition probabilities of the isomeric states are compared to shell-model predictions. Latest shell-model calculations reproduce the experimental findings generally well and provide guidance to the interpretation of the new levels.

Published
2017

34. Isomers and high-spin structures in the N=81 isotones Xe135 and Ba137

Author

Vogt, A, Birkenbach, B, Reiter, P, Blazhev, A, Siciliano, M, Hadyńska-Klęk, K, Valiente-Dobón, JJ, Wheldon, C, Teruya, E, Yoshinaga, N, Arnswald, K, Bazzacco, D, Bowry, M, Bracco, A, Bruyneel, B, Chakrawarthy, RS, Chapman, R, Cline, D, Corradi, L, Crespi, FCL, Cromaz, M, de Angelis, G, Eberth, J, Fallon, P, Farnea, E, Fioretto, E, Freeman, SJ, Fu, B, Gadea, A, Geibel, K, Gelletly, W, Gengelbach, A, Giaz, A, Görgen, A, Gottardo, A, Hayes, AB, Hess, H, Hirsch, R, Hua, H, John, PR, Jolie, J, Jungclaus, A, Kaya, L, Korten, W, Lee, IY, Leoni, S, Lewandowski, L, Liang, X, Lunardi, S, Macchiavelli, AO, Menegazzo, R, Mengoni, D, Michelagnoli, C, Mijatović, T, Montagnoli, G, Montanari, D, Müller-Gatermann, C, Napoli, D, Pearson, CJ, Pellegri, L, Podolyák, Zs, Pollarolo, G, Pullia, A, Queiser, M, Radeck, F, Recchia, F, Regan, PH, Rosiak, D, Saed-Samii, N, Şahin, E, Scarlassara, F, Schneiders, D, Seidlitz, M, Siebeck, B, Sletten, G, Smith, JF, Söderström, P-A, Stefanini, AM, Steinbach, T, Stezowski, O, Szilner, S, Szpak, B, Teng, R, Ur, C, Vandone, V, Warner, DD, Wiens, A, Wu, CY, and Zell, KO

Subjects
Nuclear and Plasma Physics, Synchrotrons and Accelerators, Physical Sciences, Nuclear and plasma physics
Abstract

The high-spin structures and isomers of the N=81 isotones Xe135 and Ba137 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in Xe136+U238 and (ii) Xe136+Pb208 MNT reactions employing the high-resolution Advanced Gamma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (iii) in the Xe136+Pt198 MNT reaction employing the γ-ray array GAMMASPHERE in combination with the gas-detector array CHICO, and (iv) via a B11+Te130 fusion-evaporation reaction with the HORUS γ-ray array at the University of Cologne. The high-spin level schemesof Xe135 and Ba137 are considerably extended to higher energies. The 2058-keV (19/2-) state in Xe135 is identified as an isomer, closing a gap in the systematics along the N=81 isotones. Its half-life is measured to be 9.0(9) ns, corresponding to a reduced transition probability of B(E2,19/2-→15/2-)=0.52(6) W.u. The experimentally deduced reduced transition probabilities of the isomeric states are compared to shell-model predictions. Latest shell-model calculations reproduce the experimental findings generally well and provide guidance to the interpretation of the new levels.

Published
2017

35. Lifetime measurements using a plunger device and the EUCLIDES Si array at the GALILEO [formula omitted]-ray spectrometer

Author

Bradbury, J., Testov, D., Bakes, S., Goasduff, A., Mengoni, D., Valiente-Dobón, J.J., de Angelis, G., Bazzacco, D., Boiano, C., Boso, A., Cederwall, B., Cicerchia, M., Colucci, G., Čolović, P., Didierjean, F., Doncel, M., Dueñas, J.A., Galtarossa, F., Gozzelino, A., Hadyńska-Klȩk, K., Jaworski, G., John, P.R., Liu, H., Lenzi, S., Lunardi, S., Menegazzo, R., Mentana, A., Müller-Gatermann, C., Napoli, D.R., Pasqualato, G., Recchia, F., Rocchini, M., Riccetto, S., Saygi, B., Siciliano, M., Sobolev, Yu., and Szilner, S.

Published
2020
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37. SPIDER: A Silicon PIe DEtectoR for low-energy Coulomb-excitation measurements

Author

Rocchini, M., Hadyńska-Klȩk, K., Nannini, A., Valiente-Dobón, J.J., Goasduff, A., Testov, D., Mengoni, D., John, P.R., Siciliano, M., Melon, B., Sona, P., Ottanelli, M., Perego, A., Chiari, M., Zielińska, M., Bazzacco, D., Benzoni, G., Bettarini, S., Brianzi, M., Camera, F., Cocconi, P., Czelusniak, C., Doherty, D.T., Komorowska, M., Marchini, N., Matejska-Minda, M., Napiorkowski, P.J., Pasquali, E., Ramina, L., Rampazzo, M., Recchia, F., Rosso, D., Sottili, L., and Tredici, A.

Published
2020
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38. High-spin structure of Xe 134

Author

Vogt, A, Birkenbach, B, Reiter, P, Blazhev, A, Siciliano, M, Valiente-Dobón, JJ, Wheldon, C, Bazzacco, D, Bowry, M, Bracco, A, Bruyneel, B, Chakrawarthy, RS, Chapman, R, Cline, D, Corradi, L, Crespi, FCL, Cromaz, M, De Angelis, G, Eberth, J, Fallon, P, Farnea, E, Fioretto, E, Freeman, SJ, Gadea, A, Geibel, K, Gelletly, W, Gengelbach, A, Giaz, A, Görgen, A, Gottardo, A, Hayes, AB, Hess, H, Hua, H, John, PR, Jolie, J, Jungclaus, A, Korten, W, Lee, IY, Leoni, S, Liang, X, Lunardi, S, Macchiavelli, AO, Menegazzo, R, Mengoni, D, Michelagnoli, C, Mijatović, T, Montagnoli, G, Montanari, D, Napoli, D, Pearson, CJ, Pellegri, L, Podolyák, Z, Pollarolo, G, Pullia, A, Radeck, F, Recchia, F, Regan, PH, Şahin, E, Scarlassara, F, Sletten, G, Smith, JF, Söderström, PA, Stefanini, AM, Steinbach, T, Stezowski, O, Szilner, S, Szpak, B, Teng, R, Ur, C, Vandone, V, Ward, D, Warner, DD, Wiens, A, and Wu, CY

Abstract

Detailed spectroscopic information on the N∼82 nuclei is necessary to benchmark shell-model calculations in the region. The nuclear structure above long-lived isomers in Xe134 is investigated after multinucleon transfer (MNT) and actinide fission. Xenon-134 was populated as (i) a transfer product in Xe136+U238 and Xe136+Pb208 MNT reactions and (ii) as a fission product in the Xe136+U238 reaction employing the high-resolution Advanced Gamma Tracking Array (AGATA). Trajectory reconstruction has been applied for the complete identification of beamlike transfer products with the magnetic spectrometer PRISMA. The Xe136+Pt198 MNT reaction was studied with the γ-ray spectrometer GAMMASPHERE in combination with the gas detector array Compact Heavy Ion Counter (CHICO). Several high-spin states in Xe134 on top of the two long-lived isomers are discovered based on γγ-coincidence relationships and information on the γ-ray angular distributions as well as excitation energies from the total kinetic energy loss and fission fragments. The revised level scheme of Xe134 is extended up to an excitation energy of 5.832 MeV with tentative spin-parity assignments up to 16+. Previous assignments of states above the 7- isomer are revised. Latest shell-model calculations employing two different effective interactions reproduce the experimental findings and support the new spin and parity assignments.

Published
2016

39. High-Precision Spectroscopy of O20 Benchmarking Ab Initio Calculations in Light Nuclei

Author

Zanon, I., primary, Clément, E., additional, Goasduff, A., additional, Menéndez, J., additional, Miyagi, T., additional, Assié, M., additional, Ciemała, M., additional, Flavigny, F., additional, Lemasson, A., additional, Matta, A., additional, Ramos, D., additional, Rejmund, M., additional, Achouri, L., additional, Ackermann, D., additional, Barrientos, D., additional, Beaumel, D., additional, Benzoni, G., additional, Boston, A. J., additional, Boston, H. C., additional, Bottoni, S., additional, Bracco, A., additional, Brugnara, D., additional, de France, G., additional, de Sereville, N., additional, Delaunay, F., additional, Desesquelles, P., additional, Didierjean, F., additional, Domingo-Prato, C., additional, Dudouet, J., additional, Eberth, J., additional, Fernández, D., additional, Fougères, C., additional, Gadea, A., additional, Galtarossa, F., additional, Girard-Alcindor, V., additional, Gonzales, V., additional, Gottardo, A., additional, Hammache, F., additional, Harkness-Brennan, L. J., additional, Hess, H., additional, Judson, D. S., additional, Jungclaus, A., additional, Kaşkaş, A., additional, Kim, Y. H., additional, Kuşoğlu, A., additional, Labiche, M., additional, Leblond, S., additional, Lenain, C., additional, Lenzi, S. M., additional, Leoni, S., additional, Li, H., additional, Ljungvall, J., additional, Lois-Fuentes, J., additional, Lopez-Martens, A., additional, Maj, A., additional, Menegazzo, R., additional, Mengoni, D., additional, Michelagnoli, C., additional, Million, B., additional, Napoli, D. R., additional, Nyberg, J., additional, Pasqualato, G., additional, Podolyak, Zs., additional, Pullia, A., additional, Quintana, B., additional, Recchia, F., additional, Regueira-Castro, D., additional, Reiter, P., additional, Rezynkina, K., additional, Rojo, J. S., additional, Salsac, M. D., additional, Sanchis, E., additional, Şenyiğit, M., additional, Siciliano, M., additional, Sohler, D., additional, Stezowski, O., additional, Theisen, Ch., additional, Utepov, A., additional, Valiente-Dobón, J. J., additional, Verney, D., additional, and Zielinska, M., additional

Published
2023
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40. 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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41. Level scheme of Nb92 and observation of an oblate collective rotational band

Author

Ren, Zhen, primary, Lu, Jing-Bin, additional, Dong, Guo-Xiang, additional, Zheng, Yun, additional, Wu, Yi-Heng, additional, Gao, Tian-Jiao, additional, Yang, Pei-Yao, additional, Hao, Yan, additional, Ma, Ke-Yan, additional, Wu, Xiao-Guang, additional, Li, Cong-Bo, additional, Huang, Zhen, additional, Zhang, Guang-Xin, additional, Hu, Shi-Peng, additional, Sun, Hui-Bin, additional, Zhang, Huan-Qiao, additional, Testov, D., additional, Valiente-Dobon, J. J., additional, Goasduff, A., additional, Siciliano, M., additional, Galtarossa, F., additional, Mengoni, D., additional, Bazzacco, D., additional, and Zhang, Gao-Long, additional

Published
2023
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42. An alternative viewpoint on the nuclear structure towards 100Sn: Lifetime measurements in 105Sn

Author

Pasqualato, G., primary, Gottardo, A., additional, Mengoni, D., additional, Goasduff, A., additional, Valiente-Dobón, J.J., additional, Nowacki, F., additional, Péru, S., additional, Pillet, N., additional, de Angelis, G., additional, Bakes, S.D., additional, Bayram, T., additional, Bazzacco, D., additional, Benzoni, G., additional, Brugnara, D., additional, Cicerchia, M., additional, Colovic, P., additional, Cortés, M.L., additional, Gadea, A., additional, Galtarossa, F., additional, Górska, M., additional, Gozzelino, A., additional, Gregor, E., additional, Hubbard, N., additional, Illana, A., additional, Jurado, M., additional, Lenzi, S.M., additional, Mantovani, G., additional, Marchi, T., additional, Menegazzo, R., additional, Montaner-Pizá, A., additional, Napoli, D.R., additional, Recchia, F., additional, Siciliano, M., additional, Testov, D., additional, Szilner, S., additional, and Zanon, I., additional

Published
2023
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44. A new dedicated plunger device for the GALILEO [formula omitted]-ray detector array

Author

Müller-Gatermann, C., von Spee, F., Goasduff, A., Bazzacco, D., Beckers, M., Braunroth, T., Boso, A., Cocconi, P., de Angelis, G., Dewald, A., Fransen, C., Goldkuhle, A., Gottardo, A., Gozzelino, A., Hadyńska-Klęk, K., Jawroski, G., John, P.R., Jolie, J., Lenzi, S.M., Litzinger, J., Menegazzo, R., Mengoni, D., Napoli, D.R., Recchia, F., Siciliano, M., Testov, D., Thiel, S., Valiente-Dobón, J.J., and Zell, K.O.

Published
2019
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46. Inclusive J/psi production in pp collisions at sqrt(s) = 2.76 TeV

Author

ALICE Collaboration, Abelev, B., Adam, J., Adamova, D., Adare, A. M., Aggarwal, M. M., Rinella, G. Aglieri, Agocs, A. G., Agostinelli, A., Salazar, S. Aguilar, Ahammed, Z., Masoodi, A. Ahmad, Ahmad, N., Ahn, S. U., Akindinov, A., Aleksandrov, D., Alessandro, B., Molina, R. Alfaro, Alici, A., Alkin, A., Avina, E. Almaraz, Alme, J., Alt, T., Altini, V., Altinpinar, S., Altsybeev, I., Andrei, C., Andronic, A., Anguelov, V., Anielski, J., Anson, C., Anticic, T., Antinori, F., Antonioli, P., Aphecetche, L., Appelshauser, H., Arbor, N., Arcelli, S., Arend, A., Armesto, N., Arnaldi, R., Aronsson, T., Arsene, I. C., Arslandok, M., Asryan, A., Augustinus, A., Averbeck, R., Awes, T. C., Aysto, J., Azmi, M. D., Bach, M., Badala, A., Baek, Y. W., Bailhache, R., Bala, R., Ferroli, R. Baldini, Baldisseri, A., Baldit, A., Pedrosa, F. Baltasar Dos Santos, Ban, J., Baral, R. C., Barbera, R., Barile, F., Barnafoldi, G. G., Barnby, L. S., Barret, V., Bartke, J., Basile, M., Bastid, N., Bathen, B., Batigne, G., Batyunya, B., Baumann, C., Bearden, I. G., Beck, H., Belikov, I., Bellini, F., Bellwied, R., Belmont-Moreno, E., Bencedi, G., Beole, S., Berceanu, I., Bercuci, A., Berdnikov, Y., Berenyi, D., Bergmann, C., Berzano, D., Betev, L., Bhasin, A., Bhati, A. K., Bianchi, L., Bianchi, N., Bianchin, C., Bielcik, J., Bielcikova, J., Bjelogrlic, S., Blanco, F., Blau, D., Blume, C., Boccioli, M., Bock, N., Bogdanov, A., Boggild, H., Bogolyubsky, M., Boldizsar, L., Bombara, M., Book, J., Borel, H., Borissov, A., Bose, S., Bossu, F., Botje, M., Bottger, S., Boyer, B., Braidot, E., Braun-Munzinger, P., Bregant, M., Breitner, T., Browning, T. A., Broz, M., Brun, R., Bruna, E., Bruno, G. E., Budnikov, D., Buesching, H., Bufalino, S., Bugaiev, K., Busch, O., Buthelezi, Z., Orduna, D. Caballero, Caffarri, D., Cai, X., Caines, H., Villar, E. Calvo, Camerini, P., Roman, V. Canoa, Romeo, G. Cara, Carena, W., Carena, F., Filho, N. Carlin, Carminati, F., Montoya, C. A. Carrillo, Diaz, A. Casanova, Castellanos, J. Castillo, Hernandez, J. F. Castillo, Casula, E. A. R., Catanescu, V., Cavicchioli, C., Cepila, J., Cerello, P., Chang, B., Chapeland, S., Charvet, J. L., Chattopadhyay, S., Chawla, I., Cherney, M., Cheshkov, C., Cheynis, B., Chiavassa, E., Barroso, V. Chibante, Chinellato, D. D., Chochula, P., Chojnacki, M., Christakoglou, P., Christensen, C. H., Christiansen, P., Chujo, T., Chung, S. U., Cicalo, C., Cifarelli, L., Cindolo, F., Cleymans, J., Coccetti, F., Colamaria, F., Colella, D., Balbastre, G. Conesa, del Valle, Z. Conesa, Constantin, P., Contin, G., Contreras, J. G., Cormier, T. M., Morales, Y. Corrales, Cortese, P., Maldonado, I. Cortes, Cosentino, M. R., Costa, F., Cotallo, M. E., Crescio, E., Crochet, P., Alaniz, E. Cruz, Cuautle, E., Cunqueiro, L., Dainese, A., Dalsgaard, H. H., Danu, A., Das, K., Das, I., Das, D., Dash, A., Dash, S., De, S., de Barros, G. O. V., De Caro, A., de Cataldo, G., de Cuveland, J., De Falco, A., De Gruttola, D., Delagrange, H., Sanchez, E. Del Castillo, Deloff, A., Demanov, V., De Marco, N., Denes, E., De Pasquale, S., Deppman, A., Erasmo, G. D, de Rooij, R., Corchero, M. A. Diaz, Di Bari, D., Dietel, T., Di Giglio, C., Di Liberto, S., Di Mauro, A., Di Nezza, P., Divia, R., Djuvsland, O., Dobrin, A., Dobrowolski, T., Dominguez, I., Donigus, B., Dordic, O., Driga, O., Dubey, A. K., Ducroux, L., Dupieux, P., Majumdar, A. K. Dutta, Majumdar, M. R. Dutta, Elia, D., Emschermann, D., Engel, H., Erdal, H. A., Espagnon, B., Estienne, M., Esumi, S., Evans, D., Eyyubova, G., Fabris, D., Faivre, J., Falchieri, D., Fantoni, A., Fasel, M., Fearick, R., Fedunov, A., Fehlker, D., Feldkamp, L., Felea, D., Feofilov, G., Tellez, A. Fernandez, Ferreiro, E. G., Ferretti, A., Ferretti, R., Figiel, J., Figueredo, M. A. S., Filchagin, S., Finogeev, D., Fionda, F. M., Fiore, E. M., Floris, M., Foertsch, S., Foka, P., Fokin, S., Fragiacomo, E., Fragkiadakis, M., Frankenfeld, U., Fuchs, U., Furget, C., Girard, M. Fusco, Gaardhoje, J. J., Gagliardi, M., Gago, A., Gallio, M., Gangadharan, D. R., Ganoti, P., Garabatos, C., Garcia-Solis, E., Garishvili, I., Gerhard, J., Germain, M., Geuna, C., Gheata, A., Gheata, M., Ghidini, B., Ghosh, P., Gianotti, P., Girard, M. R., Giubellino, P., Gladysz-Dziadus, E., Glassel, P., Gomez, R., Gonzalez-Trueba, L. H., Gonzalez-Zamora, P., Gorbunov, S., Goswami, A., Gotovac, S., Grabski, V., Graczykowski, L. K., Grajcarek, R., Grelli, A., Grigoras, A., Grigoras, C., Grigoriev, V., Grigoryan, A., Grigoryan, S., Grinyov, B., Grion, N., Gros, P., Grosse-Oetringhaus, J. F., Grossiord, J. -Y., Grosso, R., Guber, F., Guernane, R., Gutierrez, C. Guerra, Guerzoni, B., Guilbaud, M., Gulbrandsen, K., Gunji, T., Gupta, A., Gupta, R., Gutbrod, H., Haaland, O., Hadjidakis, C., Haiduc, M., Hamagaki, H., Hamar, G., Han, B. H., Hanratty, L. D., Hansen, A., Harmanova, Z., Harris, J. W., Hartig, M., Hasegan, D., Hatzifotiadou, D., Hayrapetyan, A., Heckel, S. T., Heide, M., Helstrup, H., Herghelegiu, A., Corral, G. Herrera, Herrmann, N., Hetland, K. F., Hicks, B., Hille, P. T., Hippolyte, B., Horaguchi, T., Hori, Y., Hristov, P., Hrivnacova, I., Huang, M., Huber, S., Humanic, T. J., Hwang, D. S., Ichou, R., Ilkaev, R., Ilkiv, I., Inaba, M., Incani, E., Innocenti, G. M., Innocenti, P. G., Ippolitov, M., Irfan, M., Ivan, C., Ivanov, V., Ivanov, A., Ivanov, M., Ivanytskyi, O., Jacholkowski, A., Jacobs, P. M., Jancurova, L., Jang, H. J., Jangal, S., Janik, M. A., Janik, R., Jayarathna, P. H. S. Y., Jena, S., Bustamante, R. T. Jimenez, Jirden, L., Jones, P. G., Jung, H., Jusko, A., Kaidalov, A. B., Kakoyan, V., Kalcher, S., Kalinak, P., Kalisky, M., Kalliokoski, T., Kalweit, A., Kanaki, K., Kang, J. H., Kaplin, V., Uysal, A. Karasu, Karavichev, O., Karavicheva, T., Karpechev, E., Kazantsev, A., Kebschull, U., Keidel, R., Khan, M. M., Khan, S. A., Khan, P., Khanzadeev, A., Kharlov, Y., Kileng, B., Kim, M., Kim, J. S., Kim, D. J., Kim, T., Kim, B., Kim, S., Kim, S. H., Kim, D. W., Kim, J. H., Kirsch, S., Kisel, I., Kiselev, S., Kisiel, A., Klay, J. L., Klein, J., Klein-Bosing, C., Kliemant, M., Kluge, A., Knichel, M. L., Knospe, A. G., Koch, K., Kohler, M. K., Kolojvari, A., Kondratiev, V., Kondratyeva, N., Konevskikh, A., Korneev, A., Don, C. Kottachchi Kankanamge, Kour, R., Kowalski, M., Kox, S., Meethaleveedu, G. Koyithatta, Kral, J., Kralik, I., Kramer, F., Kraus, I., Krawutschke, T., Krelina, M., Kretz, M., Krivda, M., Krizek, F., Krus, M., Kryshen, E., Krzewicki, M., Kucheriaev, Y., Kuhn, C., Kuijer, P. G., Kurashvili, P., Kurepin, A., Kurepin, A. B., Kuryakin, A., Kushpil, S., Kushpil, V., Kvaerno, H., Kweon, M. J., Kwon, Y., de Guevara, P. Ladron, Lakomov, I., Langoy, R., Lara, C., Lardeux, A., La Rocca, P., Lazzeroni, C., Lea, R., Bornec, Y. Le, Lee, S. C., Lee, K. S., Lefevre, F., Lehnert, J., Leistam, L., Lenhardt, M., Lenti, V., Leon, H., Monzon, I. Leon, Vargas, H. Leon, Levai, P., Lien, J., Lietava, R., Lindal, S., Lindenstruth, V., Lippmann, C., Lisa, M. A., Liu, L., Loenne, P. I., Loggins, V. R., Loginov, V., Lohn, S., Lohner, D., Loizides, C., Loo, K. K., Lopez, X., Torres, E. Lopez, Lovhoiden, G., Lu, X. -G., Luettig, P., Lunardon, M., Luo, J., Luparello, G., Luquin, L., Luzzi, C., Ma, K., Ma, R., Madagodahettige-Don, D. M., Maevskaya, A., Mager, M., Mahapatra, D. P., Maire, A., Malaev, M., Cervantes, I. Maldonado, Malinina, L., Mal'Kevich, D., Malzacher, P., Mamonov, A., Manceau, L., Mangotra, L., Manko, V., Manso, F., Manzari, V., Mao, Y., Marchisone, M., Mares, J., Margagliotti, G. V., Margotti, A., Marin, A., Tobon, C. A. Marin, Markert, C., Martashvili, I., Martinengo, P., Martinez, M. I., Davalos, A. Martinez, Garcia, G. Martinez, Martynov, Y., Mas, A., Masciocchi, S., Masera, M., Masoni, A., Massacrier, L., Mastromarco, M., Mastroserio, A., Matthews, Z. L., Matyja, A., Mayani, D., Mayer, C., Mazer, J., Mazzoni, M. A., Meddi, F., Menchaca-Rocha, A., Perez, J. Mercado, Meres, M., Miake, Y., Milano, L., Milosevic, J., Mischke, A., Mishra, A. N., Miskowiec, D., Mitu, C., Mlynarz, J., Mohanty, A. K., Mohanty, B., Molnar, L., Zetina, L. Montano, Monteno, M., Montes, E., Moon, T., Morando, M., De Godoy, D. A. Moreira, Moretto, S., Morsch, A., Muccifora, V., Mudnic, E., Muhuri, S., Muller, H., Munhoz, M. G., Musa, L., Musso, A., Nandi, B. K., Nania, R., Nappi, E., Nattrass, C., Naumov, N. P., Navin, S., Nayak, T. K., Nazarenko, S., Nazarov, G., Nedosekin, A., Nicassio, M., Nielsen, B. S., Niida, T., Nikolaev, S., Nikolic, V., Nikulin, V., Nikulin, S., Nilsen, B. S., Nilsson, M. S., Noferini, F., Nomokonov, P., Nooren, G., Novitzky, N., Nyanin, A., Nyatha, A., Nygaard, C., Nystrand, J., Ochirov, A., Oeschler, H., Oh, S. K., Oh, S., Oleniacz, J., Oppedisano, C., Velasquez, A. Ortiz, Ortona, G., Oskarsson, A., Ostrowski, P., Otwinowski, J., Ovrebekk, G., Oyama, K., Ozawa, K., Pachmayer, Y., Pachr, M., Padilla, F., Pagano, P., Paic, G., Painke, F., Pajares, C., Pal, S. K., Pal, S., Palaha, A., Palmeri, A., Papikyan, V., Pappalardo, G. S., Park, W. J., Passfeld, A., Pastircak, B., Patalakha, D. I., Paticchio, V., Pavlinov, A., Pawlak, T., Peitzmann, T., Filho, E. Pereira De Oliveira, Peresunko, D., Lara, C. E. Perez, Lezama, E. Perez, Perini, D., Perrino, D., Peryt, W., Pesci, A., Peskov, V., Pestov, Y., Petracek, V., Petran, M., Petris, M., Petrov, P., Petrovici, M., Petta, C., Piano, S., Piccotti, A., Pikna, M., Pillot, P., Pinazza, O., Pinsky, L., Pitz, N., Piuz, F., Piyarathna, D. B., Ploskon, M., Pluta, J., Pocheptsov, T., Pochybova, S., Podesta-Lerma, P. L. M., Poghosyan, M. G., Polak, K., Polichtchouk, B., Pop, A., Porteboeuf-Houssais, S., Pospisil, V., Potukuchi, B., Prasad, S. K., Preghenella, R., Prino, F., Pruneau, C. A., Pshenichnov, I., Puchagin, S., Puddu, G., Teixido, J. Pujol, Pulvirenti, A., Punin, V., Putis, M., Putschke, J., Quercigh, E., Qvigstad, H., Rachevski, A., Rademakers, A., Radomski, S., Raiha, T. S., Rak, J., Rakotozafindrabe, A., Ramello, L., Reyes, A. Ramirez, Raniwala, S., Raniwala, R., Rasanen, S. S., Rascanu, B. T., Rathee, D., Read, K. F., Real, J. S., Redlich, K., Reichelt, P., Reicher, M., Renfordt, R., Reolon, A. R., Reshetin, A., Rettig, F., Revol, J. -P., Reygers, K., Riccati, L., Ricci, R. A., Richert, T., Richter, M., Riedler, P., Riegler, W., Riggi, F., Cahuantzi, M. Rodriguez, Roed, K., Rohr, D., Rohrich, D., Romita, R., Ronchetti, F., Rosnet, P., Rossegger, S., Rossi, A., Roukoutakis, F., Roy, C., Roy, P., Montero, A. J. Rubio, Rui, R., Ryabinkin, E., Rybicki, A., Sadovsky, S., Safarik, K., Sahoo, R., Sahu, P. K., Saini, J., Sakaguchi, H., Sakai, S., Sakata, D., Salgado, C. A., Salzwedel, J., Sambyal, S., Samsonov, V., Castro, X. Sanchez, Sandor, L., Sandoval, A., Sano, S., Sano, M., Santo, R., Santoro, R., Sarkamo, J., Scapparone, E., Scarlassara, F., Scharenberg, R. P., Schiaua, C., Schicker, R., Schmidt, H. R., Schmidt, C., Schreiner, S., Schuchmann, S., Schukraft, J., Schutz, Y., Schwarz, K., Schweda, K., Scioli, G., Scomparin, E., Scott, P. A., Scott, R., Segato, G., Selyuzhenkov, I., Senyukov, S., Seo, J., Serci, S., Serradilla, E., Sevcenco, A., Sgura, I., Shabetai, A., Shabratova, G., Shahoyan, R., Sharma, N., Sharma, S., Shigaki, K., Shimomura, M., Shtejer, K., Sibiriak, Y., Siciliano, M., Sicking, E., Siddhanta, S., Siemiarczuk, T., Silvermyr, D., Silvestre, C., Simonetti, G., Singaraju, R., Singh, R., Singha, S., Sinha, T., Sinha, B. C., Sitar, B., Sitta, M., Skaali, T. 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Subjects
High Energy Physics - Experiment
Abstract

The ALICE Collaboration has measured inclusive J/psi production in pp collisions at a center of mass energy sqrt(s)=2.76 TeV at the LHC. The results presented in this Letter refer to the rapidity ranges |y|<0.9 and 2.5

Published
2012
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47. Charge collection in the Silicon Drift Detectors of the ALICE experiment

Author

Alessandro, B., Bala, R., Batigne, G., Beole', S., Biolcati, E., Cerello, P., Coli, S., Morales, Y. Corrales, Crescio, E., De Remigis, P., Falchieri, D., Giraudo, G., Giubellino, P., Lea, R., Chiesa, A. Marzari, Masera, M., Mazza, G., Ortona, G., Prino, F., Ramello, L., Rashevsky, A., Riccati, L., Rivetti, A., Senyukov, S., Siciliano, M., Sitta, M., Subieta, M., Toscano, L., and Tosello, F.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment, Nuclear Experiment
Abstract

A detailed study of charge collection efficiency has been performed on the Silicon Drift Detectors (SDD) of the ALICE experiment. Three different methods to study the collected charge as a function of the drift time have been implemented. The first approach consists in measuring the charge at different injection distances moving an infrared laser by means of micrometric step motors. The second method is based on the measurement of the charge injected by the laser at fixed drift distance and varying the drift field, thus changing the drift time. In the last method, the measurement of the charge deposited by atmospheric muons is used to study the charge collection efficiency as a function of the drift time. The three methods gave consistent results and indicated that no charge loss during the drift is observed for the sensor types used in 99% of the SDD modules mounted on the ALICE Inner Tracking System. The atmospheric muons have also been used to test the effect of the zero-suppression applied to reduce the data size by erasing the counts in cells not passing the thresholds for noise removal. As expected, the zero suppression introduces a dependence of the reconstructed charge as a function of drift time because it cuts the signal in the tails of the electron clouds enlarged by diffusion effects. These measurements allowed also to validate the correction for this effect extracted from detailed Monte Carlo simulations of the detector response and applied in the offline data reconstruction.

Published
2010
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48. Angular distribution of γ92689 rays emitted by oriented nuclei: the case of γ92689Mo formed in the reaction γ92689Li+γ92689Y

Author

Huang, Z., Zhang, G. X., Hu, S. P., Paes, B., Cardozo, E. N., Ferreira, J. L., Ermamatov, M. J., Zhang, G. L., Lu, J. B., Mazzocco, M., Lv, Y. F., Zhang, H. Q., Sun, H. B., Testov, D., John, P. R., Valiente-Dobón, J. J., Goasduff, A., Siciliano, M., Galtarossa, F., Recchia, F., Mengoni, D., Bazzacco, D., Lubian, J., Qin, X. B., and Zhao, H. M.

Published
2021
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49. Confirmation of a new resonance in Si26 and contribution of classical novae to the galactic abundance of Al26

Author

Canete, L., primary, Doherty, D. T., additional, Lotay, G., additional, Seweryniak, D., additional, Campbell, C. M., additional, Carpenter, M. P., additional, Catford, W. N., additional, Chipps, K. A., additional, Henderson, J., additional, Izzard, R. G., additional, Janssens, R. V. F., additional, Jayatissa, H., additional, José, J., additional, Kennington, A. R. L., additional, Kondev, F. G., additional, Korichi, A., additional, Lauritsen, T., additional, Müller-Gatermann, C., additional, Paxman, C., additional, Podolyák, Zs., additional, Reed, B. J., additional, Regan, P. H., additional, Reviol, W., additional, Siciliano, M., additional, Wilson, G. L., additional, Yates, R., additional, and Zhu, S., additional

Published
2023
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50. Emergence of triaxiality in 74Se from electric monopole transition strengths

Author

Marchini, N., primary, Nannini, A., additional, Rocchini, M., additional, Rodríguez, T.R., additional, Ottanelli, M., additional, Gelli, N., additional, Perego, A., additional, Benzoni, G., additional, Blasi, N., additional, Bocchi, G., additional, Brugnara, D., additional, Buccola, A., additional, Carozzi, G., additional, Goasduff, A., additional, Gregor, E.T., additional, John, P.R., additional, Komorowska, M., additional, Mengoni, D., additional, Recchia, F., additional, Riccetto, S., additional, Rosso, D., additional, Saltarelli, A., additional, Siciliano, M., additional, Valiente-Dobón, J.J., additional, and Zanon, I., additional

Published
2023
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