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1. 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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2. 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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3. Single neutron transfer on Ne and its relevance for the pathway of nucleosynthesis in astrophysical X-ray bursts

Author

Lotay, G., Henderson, J., Catford, W.N., Ali, F.A., Berean, J., Bernier, N., Bhattacharjee, S.S., Bowry, M., Caballero-Folch, R., Davids, B., Drake, T.E., Garnsworthy, A.B., Ghazi Moradi, F., Gillespie, S.A., Greaves, B., Hackman, G., Hallam, S., Hymers, D., Kasanda, E., Levy, D., Luna, B.K., Mathews, A., Meisel, Z., Moukaddam, M., Muecher, D., Olaizola, B., Orr, N.A., Patel, H.P., Rajabali, M.M., Saito, Y., Smallcombe, J., Spencer, M., Svensson, C.E., Whitmore, K., and Williams, M.

Abstract

We present new experimental measurements of resonance strengths in the astrophysical $^{23}$Al(p,γ)$^{24}$Si reaction, constraining the pathway of nucleosynthesis beyond $^{22}$Mg in X-ray burster scenarios. Specifically, we have performed the first measurement of the (d,p) reaction using a radioactive beam of $^{23}$Ne to explore levels in $^{24}$Ne, the mirror analog of $^{24}$Si. Four strong single-particle states were observed and corresponding neutron spectroscopic factors were extracted with a precision of ∼20%. Using these spectroscopic factors, together with mirror state identifications, we have reduced uncertainties in the strength of the key ℓ = 0 resonance at Er = 157 keV, in the astrophysical $^{23}$Al(p,γ) reaction, by a factor of 4. Our results show that the $^{22}$Mg(p,γ)$^{23}$Al(p,γ) pathway dominates over the competing $^{22}$Mg(α,p) reaction in all but the most energetic X-ray burster events (T>0.85 GK), significantly affecting energy production and the preservation of hydrogen fuel.

Published
2022

4. Single neutron transfer on 23Ne and its relevance for the pathway of nucleosynthesis in astrophysical X-ray bursts

Author

Lotay, G., Henderson, J., Catford, W.N., Ali, F.A., Berean, J., Bernier, N., Bhattacharjee, S.S., Bowry, M., Caballero-Folch, R., Davids, B., Drake, T.E., Garnsworthy, A.B., Ghazi Moradi, F., Gillespie, S.A., Greaves, B., Hackman, G., Hallam, S., Hymers, D., Kasanda, E., Levy, D., Luna, B.K., Mathews, A., Meisel, Z., Moukaddam, M., Muecher, D., Olaizola, B., Orr, N.A., Patel, H.P., Rajabali, M.M., Saito, Y., Smallcombe, J., Spencer, M., Svensson, C.E., Whitmore, K., and Williams, M.

Published
2022
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5. Lifetimes of core-excited states in semi-magic Rh-95

Author

Ertoprak, A., Qi, C., Cederwall, B., Doncel, M., Jakobsson, U., Nyako, 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., Clement, E., Debenham, D. M., Dombradi, Zs., Ertürk, S., Gadea, A., Ghazi Moradi, F., Gottardo, A., Hüyük, T., Ideguchi, E., Li, H., Michelagnoli, C., Modamio, V., Nyberg, Johan, Palacz, M., Petrache, C. M., Recchia, F., Sandzelius, M., Siciliano, M., Sohler, D., Timar, J., Valiente-Dobon, J. J., Xiao, Z. G., and Department of Chemistry

Subjects
Subatomär fysik, Subatomic Physics, Nuclear Theory, TRANSITIONS, Nuclear Experiment, 114 Physical sciences, SHIFT ATTENUATION METHOD
Abstract

Lifetimes of negative-parity states have been determined in the neutron deficient semi-magic (N = 50) nucleus Rh-95. The fusion-evaporation reaction Ni-58(Ca-40, 3p) was used to populate high-spin states in Rh-95 at the Grand Accelerateur National d'Ions Lourds (GANIL) accelerator facility. The results were obtained using the Doppler Shift Attenuation Method (DSAM) based on the Doppler broadened line shapes produced during the slowing down process of the residual nuclei in a thick 6 mg/cm(2) metallic target. B(M1) and B(E2) reduced transition strengths are compared with predictions from large-scale shell-model calculations. state-of-the-art theory. Remarkably, the structural features up to moderate angular momentum of nuclei immediately below the N = Z = 50 shell closures can be described with high accuracy in a very simple way by shell-model calculations including only the g(9/2) and p(1/2) subshells. Of special interest is the neutron-proton pair coupling scheme which is expected to appear in the heaviest N=Z nuclei [1,2] and the seniority structure of the N = 50 isotones [3-7]. However, multiple core-excited states have been observed in the semi-magic nuclei of the Sn-100 region [8-10]. The theoretical study of those states is a challenging task, which requires a significantly larger model space for their interpretation. Transition probabilities between nuclear states provide important constraints for theoretical modelling of the structure of the nuclei of interest. Our previous lifetime study of the semimagic (N = 50) nucleus Ru-94 [ 11,12] provided information on the electromagnetic decay properties of neutron-core excited states. We now address lifetime measurements in its closest, more neutron deficient, isotone Rh-95 using the same DSAM technique. The experimental results have been interpreted within the framework of large-scale shell-model (LSSM) calculations.

Published
2020

6. Lifetimes of core-excited states in semi-magic $^{95}$Rh

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., Xiao, Z. G., Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
lifetimes, core-excited states, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], ydinfysiikka, ComputingMilieux_MISCELLANEOUS
Abstract

Lifetimes of negative-parity states have been determined in the neutron deficient semi-magic (N = 50) nucleus 95Rh. The fusion-evaporation reaction 58Ni(40Ca,3p) was used to populate high-spin states in 95Rh at the Grand Accélérateur National d’Ions Lourds (GANIL) accelerator facility. The results were obtained using the Doppler Shift Attenuation Method (DSAM) based on the Doppler broadened line shapes produced during the slowing down process of the residual nuclei in a thick 6mg/cm2 metallic target. B(M1) and B(E2) reduced transition strengths are compared with predictions from large-scale shell-model calculations. peerReviewed

Published
2020

7. Neutron Skin Effects in Mirror Energy Differences: The Case of $^{23}$Mg$-$$^{23}$Na

Author

Boso, A., Lenzi, S. M., Recchia, F., Bonnard, J., Zuker, A. P., Aydin, S., Bentley, M. A., Cederwall, B., Clement, E., De France, G., Di Nitto, A., Dijon, A., Doncel, M., Ghazi-Moradi, F., Gadea, A., Gottardo, A., Henry, T., Hüyük, T., Jaworski, G., John, P. R., Juhász, K., Kuti, I., Melon, B., Mengoni, D., Michelagnoli, C., Modamio, V., Napoli, D. R., Nyakó, B. M., Nyberg, J., Palacz, M., Timár, J., Valiente-Dobón, J. J., Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Boso, A., Lenzi, S. M., Recchia, F., Bonnard, J., Zuker, A. P., Aydin, S., Bentley, M. A., Cederwall, B., Clement, E., De France, G., Di Nitto, A., Dijon, A., Doncel, M., Ghazi-Moradi, F., Gadea, A., Gottardo, A., Henry, T., Huyuk, T., Jaworski, G., John, P. R., Juhasz, K., Kuti, I., Melon, B., Mengoni, D., Michelagnoli, C., Modamio, V., Napoli, D. R., Nyako, B. M., Nyberg, J., Palacz, M., Timar, J., Valiente-Dobon, J. J., Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics and Astronomy (all), [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Nuclear Theory, Nuclear Experiment
Abstract

International audience; Energy differences between analogue states in the T=1/2 Mg23-Na23 mirror nuclei have been measured along the rotational yrast bands. This allows us to search for effects arising from isospin-symmetry-breaking interactions (ISB) and/or shape changes. Data are interpreted in the shell model framework following the method successfully applied to nuclei in the f7/2 shell. It is shown that the introduction of a schematic ISB interaction of the same type of that used in the f7/2 shell is needed to reproduce the data. An alternative novel description, applied here for the first time, relies on the use of an effective interaction deduced from a realistic charge-dependent chiral nucleon-nucleon potential. This analysis provides two important results: (i) The mirror energy differences give direct insight into the nuclear skin; (ii) the skin changes along the rotational bands are strongly correlated with the difference between the neutron and proton occupations of the s1/2 “halo” orbit.

Published
2018

8. Neutron Skin Effects in Mirror Energy Differences: The Case of Mg-23-Na-23

Author

Boso, A., Lenzi, S. M., Recchia, F., Bonnard, J., Zuker, A. P., Aydin, S., Bentley, M. A., Cederwall, B., Clement, E., de France, G., Di Nitto, A., Dijon, A., Doncel, M., Ghazi-Moradi, F., Gadea, A., Gottardo, A., Henry, T., Huyuk, T., Jaworski, G., John, P. R., Juhasz, K., Kuti, I, Melon, B., Mengoni, D., Michelagnoli, C., Modamio, V, Napoli, D. R., Nyako, B. M., Nyberg, Johan, Palacz, M., Timar, J., Valiente-Dobon, J. J., [Boso, A. -- Lenzi, S. M. -- Recchia, F. -- Zuker, A. P. -- John, P. R. -- Mengoni, D. -- Michelagnoli, C.] Univ Padua, Dipartimento Fis & Astron, I-135131 Padua, Italy -- [Boso, A. -- Lenzi, S. M. -- Recchia, F. -- Bonnard, J. -- John, P. R. -- Mengoni, D. -- Michelagnoli, C.] INFN, Sez Padova, I-135131 Padua, Italy -- [Bonnard, J.] Univ Paris Saclay, Univ Paris Sud, Inst Phys Nucl, IN2P3,CNRS, F-91405 Orsay, France -- [Zuker, A. P.] Univ Strasbourg, F-67000 Strasbourg, France -- [Zuker, A. P.] IPHC, F-67000 Strasbourg, France -- [Aydin, S.] Aksaray Univ, Dept Phys, TR-68100 Aksaray, Turkey -- [Bentley, M. A. -- Henry, T.] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England -- [Cederwall, B. -- Doncel, M. -- Ghazi-Moradi, F.] Royal Inst Technol, Dept Phys, SE-10691 Stockholm, Sweden -- [Clement, E. -- de France, G. -- Dijon, A.] CNRS, CEA, GANIL, DRF,IN2P3, F-14076 Caen, France -- [Di Nitto, A.] Dipartimento Fis, I-80126 Naples, Italy -- [Di Nitto, A.] INFN, Sez Napoli, I-80126 Naples, Italy -- [Di Nitto, A.] Johannes Gutenberg Univ Mainz, D-55099 Mainz, Germany -- [Gadea, A. -- Huyuk, T.] Univ Valencia, IFIC, CSIC, E-46980 Valencia, Spain -- [Gottardo, A. -- Modamio, V -- Napoli, D. R. -- Valiente-Dobon, J. J.] INFN, Lab Nazl Legnaro, I-35020 Padua, Italy -- [Jaworski, G. -- Palacz, M.] Warsaw Univ, Heavy Ion Lab, PL-02093 Warsaw, Poland -- [Juhasz, K. -- Kuti, I -- Nyako, B. M. -- Timar, J.] Hung Acad Sci, Inst Nucl Res ATOMKI, H-4001 Debrecen, Hungary -- [Melon, B.] Dipartimento Fis, I-50019 Florence, Italy -- [Melon, B.] INFN, Sez Firenze, I-50019 Florence, Italy -- [Nyberg, J.] Uppsala Univ, Dept Phys & Astron, SE-75120 Uppsala, Sweden -- [Boso, A.] Natl Phys Lab, Hampton Rd, Teddington TW11 0LW, Middx, England -- [John, P. R.] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany, Cederwall, Bo -- 0000-0003-1771-2656, Di Nitto, Antonio -- 0000-0002-9319-366X, Huyuk, Tayfun -- 0000-0003-0597-9767, Gadea, Andres -- 0000-0002-4233-1970, GOTTARDO, Andrea -- 0000-0002-0390-5767, de France, Gilles -- 0000-0002-7439-1759, and Clement, Emmanuel -- 0000-0003-1887-717X

Subjects
Subatomär fysik, Nuclear Theory, Subatomic Physics, Nuclear Experiment
Abstract

WOS: 000439286800004, PubMed: 30085775, Energy differences between analogue states in the T = 1/2 Mg-23-Na-23 mirror nuclei have been measured along the rotational yrast bands. This allows us to search for effects arising from isospin-symmetrybreaking interactions (ISB) and/or shape changes. Data are interpreted in the shell model framework following the method successfully applied to nuclei in the f(7/2) shell. It is shown that the introduction of a schematic ISB interaction of the same type of that used in the f(7/2) shell is needed to reproduce the data. An alternative novel description, applied here for the first time, relies on the use of an effective interaction deduced from a realistic charge-dependent chiral nucleon-nucleon potential. This analysis provides two important results: (i) The mirror energy differences give direct insight into the nuclear skin; (ii) the skin changes along the rotational bands are strongly correlated with the difference between the neutron and proton occupations of the s(1/2) "halo" orbit., European Union [262010 ENSAR, FP7/2007-2013], The authors are grateful to the GANIL accelerator team. This work has been financed by the European Union Seventh Framework Program No. FP7/2007-2013 under Grant Agreement No. 262010 ENSAR.

Published
2018

9. ISOSPIN SYMMETRY BREAKING IN MIRROR NUCLEI Mg-23-Na-23

Author

Boso, A., Lenzi, S. M., Recchia, F., Bonnard, J., Aydin, S., Bentley, M. A., Cederwall, B., Clement, E., De France, G., Di Nitto, A., Dijon, A., Doncel, M., Ghazi-Moradi, F., Gottardo, A., Henry, T., Huyuk, T., Jaworski, G., John, P. R., Juhasz, K., Kuti, I., Melon, B., Mengoni, D., Michelagnoli, C., Modamio, V., Napoli, D. R., Nyako, B. M., Nyberg, J., Palacz, M., Valiente-Dobon, J. J., [Lenzi, S. M. -- Recchia, F. -- Bonnard, J. -- John, P. R. -- Mengoni, D. -- Michelagnoli, C.] Univ Padua, Dipartimento Fis & Astron, Padua, Italy -- [Lenzi, S. M. -- Recchia, F. -- Bonnard, J. -- John, P. R. -- Mengoni, D. -- Michelagnoli, C.] Ist Nazl Fis Nucl, Sez Padova, Padua, Italy -- [Aydin, S.] Aksaray Univ, Dept Phys, Aksaray, Turkey -- [Bentley, M. A. -- Henry, T.] Univ York, York, N Yorkshire, England -- [Cederwall, B. -- Doncel, M. -- Ghazi-Moradi, F.] Royal Inst Technol, Dept Phys, Stockholm, Sweden -- [Clement, E. -- De France, G. -- Dijon, A.] GANIL, Caen, France -- [Di Nitto, A.] Dipartimento Sci Fis, Naples, Italy -- [Di Nitto, A.] Ist Nazl Fis Nucl, Sez Napoli, Naples, Italy -- [Gottardo, A. -- Modamio, V. -- Napoli, D. R.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, Padua, Italy -- [Huyuk, T.] IFIC CSIC, Valencia, Spain -- [Jaworski, G. -- Palacz, M.] Warsaw Univ, Heavy Ion Lab, Warsaw, Poland -- [Juhasz, K.] Univ Debrecen, H-4032 Debrecen, Hungary -- [Kuti, I. -- Nyako, B. M.] MTA Atomki, H-4001 Debrecen, Hungary -- [Melon, B.] Dipartimento Fis, Florence, Italy -- [Melon, B.] Ist Nazl Fis Nucl, Sez Firenze, Florence, Italy -- [Nyberg, J.] Uppsala Univ, Dept Phys & Astron, Uppsala, Sweden, Di Nitto, Antonio -- 0000-0002-9319-366X, Cederwall, Bo -- 0000-0003-1771-2656, Huyuk, Tayfun -- 0000-0003-0597-9767, John, Philipp Rudolf -- 0000-0003-1994-7248, de France, Gilles -- 0000-0002-7439-1759, BOSO, ALBERTO -- 0000-0001-9670-8123, Clement, Emmanuel -- 0000-0003-1887-717X, GOTTARDO, Andrea -- 0000-0002-0390-5767, and Napoli, Daniel R. -- 0000-0002-8154-6958

Abstract

Zakopane Conference on Nuclear Physics - Extremes of the Nuclear Landscape -- AUG 28-SEP 04, 2016 -- Zakopane, POLAND, WOS: 000398717500011, Mirror energy differences (MED) are a direct consequence of isospin symmetry breaking. Moreover, the study of MED has proved to give valuable information of several nuclear structure properties. We present the results of an experiment performed in GANIL to study the MED in mirror nuclei Mg-23-Na-23 up to high spin. The experimental values are compared with state-of-the-art shell model calculations. This permits to enlighten several nuclear structure properties, such as the way in which the nucleons alignment proceeds, the radius variation with J, the role of the spin-orbit interaction and the importance of isospin symmetry breaking terms of nuclear origin.

Published
2017

10. Character of particle-hole excitations in 94 Ru deduced from γ -ray angular correlation and linear polarization measurements

Author

Ghazi Moradi F., Qi C., Cederwall B., Atac A., Back T., Liotta R., Doncel M., Johnson A., De France G., Clement E., Dijon A., Wadsworth R., Henry T. W., Nichols A. J., Al-Azri H., Nyberg J., Gengelbach A., Huyuk T., Nyako B. M., Timar J., Sohler D., Dombradi Z., Kuti I., Juhasz K., Palacz M., Jaworski G., Lenzi S. M., John P. R., Napoli D. R., Gottardo A., Modamio V., Di Nitto A., Yilmaz B., Aktas O., Ideguchi E., Ghazi Moradi, F., Qi, C., Cederwall, B., Atac, A., Back, T., Liotta, R., Doncel, M., Johnson, A., De France, G., Clement, E., Dijon, A., Wadsworth, R., Henry, T. W., Nichols, A. J., Al-Azri, H., Nyberg, J., Gengelbach, A., Huyuk, T., Nyako, B. M., Timar, J., Sohler, D., Dombradi, Z., Kuti, I., Juhasz, K., Palacz, M., Jaworski, G., Lenzi, S. M., John, P. R., Napoli, D. R., Gottardo, A., Modamio, V., Di Nitto, A., Yilmaz, B., Aktas, O., and Ideguchi, E.

Published
2014

11. Spectroscopy of the neutron-deficient N=50 nucleus Rh 95

Author

Ghazi Moradi F., Cederwall B., Qi C., Back T., Atac A., Liotta R., Doncel M., Johnson A., De France G., Clement E., Nyberg J., Gengelbach A., Nyako B. M., Gal J., Kalinka G., Molnar J., Timar J., Sohler D., Dombradi Z., Kuti I., Juhasz K., Napoli D. R., Gottardo A., Modamio V., Wadsworth R., Henry T. W., Nichols A. J., Al-Azri H., Palacz M., Ideguchi E., Aktas O., Di Nitto A., Dijon A., Huyuk T., Jaworski G., John P. R., Yilmaz B., Ghazi Moradi, F., Cederwall, B., Qi, C., Back, T., Atac, A., Liotta, R., Doncel, M., Johnson, A., De France, G., Clement, E., Nyberg, J., Gengelbach, A., Nyako, B. M., Gal, J., Kalinka, G., Molnar, J., Timar, J., Sohler, D., Dombradi, Z., Kuti, I., Juhasz, K., Napoli, D. R., Gottardo, A., Modamio, V., Wadsworth, R., Henry, T. W., Nichols, A. J., Al-Azri, H., Palacz, M., Ideguchi, E., Aktas, O., Di Nitto, A., Dijon, A., Huyuk, T., Jaworski, G., John, P. R., and Yilmaz, B.

Published
2014

12. Character of particle-hole excitations in γ-ray angular correlation and linear polarization measurements

Author

Ghazi Moradi, F., Qi, C., Cederwall, B., Atac, A., Back, T., Liotta, R., Doncel, M., Johnson, A., de France, G., Clement, E., Dijon, A., Wadsworth, R., Henry, T. W., Nichols, A. J., Al Azri, H., Nyberg, J., Gengelbach, A., Huyuk, T., Nyako, B. M., Timar, J., Sohler, D., Dombradi, Z. s., Kuti, I., Juhasz, K., Palacz, M., Jaworski, G., Lenzi, SILVIA MONICA, John, PHILIPP RUDOLF, Napoli, D. R., Gottardo, Andrea, Modamio, V., Di Nitto, A., Yilmaz, B., Aktas, O., and Ideguchi, E.

Published
2014

13. Character of particle-hole excitations in 94 Ru deduced from gamma-ray angular correlation and linear polarization measurements

Author

Ghazi Moradi, F., Qi, C., Cederwall, B., Ataç, A., Bäck, T., Liotta, R. J., Doncel, M., Johnson, A., De France, G., Clément, E., Dijon, A., Wadsworth, R., Henry, T. W., Nichols, A. J., Al-Azri, H., Nyberg, J., Gengelbach, A., Hüyük, T., Nyakó, Barna Mátyás, Timár, János, Sohler, Dóra, Dombrádi, Zsolt, Kuti, István, Juhász, K., Palacz, M., Jaworski, G., Lenzi, S. M., John, P. R., Napoli, D. R., Gottardo, A., Modamio, V., Di Nitto, A., Yilmaz, B., Aktas, Ö., and Ideguchi, Eiji

Subjects
Természettudományok, Fizikai tudományok
Published
2014

14. Spectroscopy of the neutron-deficient N=50 nucleus 95Rh

Author

Ghazi Moradi, F., Cederwall, B., Qi, C., Bäck, T., Ataç, A., Liotta, R. J., Doncel, M., Johnson, A., De France, G., Clément, E., Nyberg, J., Gengelbach, A., Nyakó, Barna Mátyás, Gál, J., Kalinka, Gábor, Molnár, J., Timár, János, Sohler, Dóra, Dombrádi, Zsolt, Kuti, István, Juhász, K., Napoli, D. R., Gottardo, A., Modamio, V., Wadsworth, R., Henry, T. W., Nichols, A. J., Al-Azri, H., Palacz, M., Ideguchi, Eiji, Aktas, Ö., Di Nitto, A., Dijon, A., Hüyük, T., Jaworski, G., John, P. R., and Yilmaz, B.

Subjects
Természettudományok, Fizikai tudományok
Published
2014

15. Lifetime measurement of the first excited 2+ state in 108Te

Author

Bäck, T., Qi., C., Ghazi Moradi, F., Cederwall, B., Johnson, A., Liotta, R., Wyss, R., Al-Azri, H., Bloor, D., Brock, T., Wadsworth, R., Grahn, T., T. Greenlees, P., Hauschild, K., Herzan, A., Jacobsson, U., M. Jones, P., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Lopez-Martens, A., Nieminen, P., Peura, P., Rahkila, P., Rinta-Antila, S., Ruotsalainen, P., Sandzelius, M., Sarén, J., Scholey, C., Sorri, J., Uusitalo, J., Go, S., Ideguchi, E., M. Cullen, D., G. Procter, M., Braunroth, T., Dewald, A., Fransen, C., Hackstein, M., Litzinger, J., Rother, W., CSNSM SNO, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
SPECTROSCOPY, SPECTROMETERS, TOTAL DATA READOUT, Physical Sciences, Fysik, Physics::Atomic Physics, 21.10.Tg, 21.60.Cs, 27.60.+j, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

The lifetime of the first excited 2(+) state in the neutron deficient nuclide (108)Te has been measured for the first time, using a combined recoil decay tagging and recoil distance Doppler shift technique. The deduced reduced transition probability is B(E2;0(g.s.)(+) -> 2(+)) = 0.39(-0.04)(+0.05)e(2)b(2). Compared to previous experimental data on neutron deficient tellurium isotopes, the new data point constitutes a large step (six neutrons) toward the N = 50 shell closure. In contrast to what has earlier been reported for the light tin isotopes, our result for tellurium does not show any enhanced transition probability with respect to the theoretical predictions and the tellurium systematics including the new data is successfully reproduced by state-of-the-art shell model calculations. QC 20111219

Published
2011

16. ISOSPIN SYMMETRY BREAKING IN MIRROR NUCLEI 23Mg-23Na.

Author

BOSO, A., LENZI, S. M., RECCHIA, F., BONNARD, J., AYDIN, S., BENTLEY, M. A., CEDERWALL, B., CLEMENT, E., DE FRANCE, G., DI NITTO, A., DIJON, A., DONCEL, M., GHAZI-MORADI, F., GOTTARDO, A., HENRY, T., HüYüK, T., JAWORSKI, G., JOHN, P. R., JUHáSZ, K., and KUTI, I.

Subjects
ISOBARIC spin, SYMMETRY breaking, NUCLEAR structure, SPIN-orbit interactions, MAGNESIUM isotopes, SODIUM
Abstract

Mirror energy differences (MED) are a direct consequence of isospin symmetry breaking. Moreover, the study of MED has proved to give valuable information of several nuclear structure properties. We present the results of an experiment performed in GANIL to study the MED in mirror nuclei 23Mg-23Na up to high spin. The experimental values are compared with state-of-the-art shell model calculations. This permits to enlighten several nuclear structure properties, such as the way in which the nucleons alignment proceeds, the radius variation with J, the role of the spin-orbit interaction and the importance of isospin symmetry breaking terms of nuclear origin. [ABSTRACT FROM AUTHOR]

Published
2017
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17. M1 and E2 transition rates from core-excited states in semi-magic 94Ru

Author

V. Modamio, F. Ghazi Moradi, Ulrika Jakobsson, Bo Cederwall, Torbjörn Bäck, H. W. Li, J. J. Valiente-Dobón, M. Siciliano, S. Erturk, István Kuti, Chong Qi, Eiji Ideguchi, D. R. Napoli, C. Michelagnoli, S. S. Ghugre, A. Gottardo, R. Wadsworth, János Timár, R. Raut, Zs. Dombradi, M. Doncel, A. Algora, A. Boso, G. Jaworski, G. de Angelis, P. J. Davies, Zhigang Xiao, D. M. Debenham, H. Al Azri, C. M. Petrache, A. Atac, Eric Clément, Baki Akkuş, F. Recchia, Mikael Sandzelius, A. Gadea, T. Hüyük, A. Ertoprak, M. Palacz, Johan Nyberg, B. M. Nyakó, Ertoprak, A., Department of Physics, Royal Institute of Technology (KTH), Stockholm, SE-10691, Sweden, Department of Physics, Faculty of Science, Istanbul University, Vezneciler/Fatih, Istanbul, 34134, Turkey -- Cederwall, B., Department of Physics, Royal Institute of Technology (KTH), Stockholm, SE-10691, Sweden -- Qi, C., Department of Physics, Royal Institute of Technology (KTH), Stockholm, SE-10691, Sweden -- Doncel, M., Department of Physics, Royal Institute of Technology (KTH), Stockholm, SE-10691, Sweden, Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, United Kingdom -- Jakobsson, U., Department of Physics, Royal Institute of Technology (KTH), Stockholm, SE-10691, Sweden, Department of Chemistry, University of Helsinki, P.O. Box 3, Helsinki, 00014, Finland -- Nyakó, B.M., MTA Atomki, Debrecen, H-4001, Hungary -- Jaworski, G., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, I-35020, Italy -- Davies, P., Department of Physics, University of York, Heslington, York, YO10 5DD, United Kingdom -- de France, G., Grand Accélérateur National d’Ions Lourds (GANIL), CEA/DSM - CNRS/IN2P3, Bd Henri Becquerel, BP 55027, Caen Cedex 5, F-14076, France -- Kuti, I., MTA Atomki, Debrecen, H-4001, Hungary -- Napoli, D.R., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, I-35020, Italy -- Wadsworth, R., Department of Physics, University of York, Heslington, York, YO10 5DD, United Kingdom -- Ghugre, S.S., UGC-DAE Consortium for Scientific Research, Kolkata Centre, Kolkata, 700098, India -- Raut, R., UGC-DAE Consortium for Scientific Research, Kolkata Centre, Kolkata, 700098, India -- Akkus, B., Department of Physics, Faculty of Science, Istanbul University, Vezneciler/Fatih, Istanbul, 34134, Turkey -- Al Azri, H., Department of Physics, University of York, Heslington, York, YO10 5DD, United Kingdom -- Algora, A., MTA Atomki, Debrecen, H-4001, Hungary, Instituto de Física Corpuscular, CSIC-Universidad de Valencia, Valencia, E-46980, Spain -- de Angelis, G., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, I-35020, Italy -- Atac, A., Department of Physics, Royal Institute of Technology (KTH), Stockholm, SE-10691, Sweden -- Bäck, T., Department of Physics, Royal Institute of Technology (KTH), Stockholm, SE-10691, Sweden -- Boso, A., Dipartimento di Fisica e Astronomia, Università di Padova, Padova, Italy -- Clément, E., Grand Accélérateur National d’Ions Lourds (GANIL), CEA/DSM - CNRS/IN2P3, Bd Henri Becquerel, BP 55027, Caen Cedex 5, F-14076, France -- Debenham, D.M., Department of Physics, University of York, Heslington, York, YO10 5DD, United Kingdom -- Dombrádi, Z., MTA Atomki, Debrecen, H-4001, Hungary -- Ertürk, S., Nigde Omer Halisdemir University, Science and Art Faculty, Department of Physics, Nigde, 51200, Turkey -- Gadea, A., Instituto de Física Corpuscular, CSIC-Universidad de Valencia, Valencia, E-46980, Spain -- Ghazi Moradi, F., Department of Physics, Royal Institute of Technology (KTH), Stockholm, SE-10691, Sweden -- Gottardo, A., Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, Orsay, 91405, France -- Hüyük, T., Instituto de Física Corpuscular, CSIC-Universidad de Valencia, Valencia, E-46980, Spain -- Ideguchi, E., Research Center for Nuclear Physics, Osaka University, Osaka, Japan -- Li, H., Department of Physics, Royal Institute of Technology (KTH), Stockholm, SE-10691, Sweden -- Michelagnoli, C., Grand Accélérateur National d’Ions Lourds (GANIL), CEA/DSM - CNRS/IN2P3, Bd Henri Becquerel, BP 55027, Caen Cedex 5, F-14076, France -- Modamio, V., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, I-35020, Italy -- Nyberg, J., Department of Physics and Astronomy, Uppsala University, Uppsala, SE-75120, Sweden -- Palacz, M., Heavy Ion Laboratory, University of Warsaw, Pasteura 5A, Warsaw, PL 02-093, Poland -- Petrache, C.M., Centre de Sciences Nucléaires et Sciences de la Matière, CNRS/IN2P3, Université Paris-Saclay, Orsay, 91405, France -- Recchia, F., Dipartimento di Fisica e Astronomia, Università di Padova, Padova, Italy -- Sandzelius, M., University of Jyväskylä, Department of Physics, Jyväskylä, FI-40014, Finland -- Siciliano, M., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, I-35020, Italy -- Timár, J., MTA Atomki, Debrecen, H-4001, Hungary -- Valiente-Dobón, J.J., Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, I-35020, Italy -- Xiao, Z.G., Department of Physics, Tsinghua University, Beijing, 100084, China, 0-Belirlenecek, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, Angular momentum, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], 010308 nuclear & particles physics, Hadron, Elementary particle, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Spectral line, 0-Belirlenecek, Baryon, Excited state, 0103 physical sciences, Atomic physics, 010306 general physics, Nucleon
Abstract

Lifetimes of high-spin states have been measured in the semi-magic (N= 50) nucleus 94Ru. Excited states in 94Ru were populated in the 58Ni(40Ca, 4p)94Ru* fusion-evaporation reaction at the Grand Accélérateur National d’Ions Lourds (GANIL) accelerator complex. DSAM lifetime analysis was performed on the Doppler broadened line shapes in energy spectra obtained from ?-rays emitted while the residual nuclei were slowing down in a thick 6mg/cm^2 metallic 58Ni target. In total eight excited-state lifetimes in the angular momentum range I= (13 - 20) ? have been measured, five of which were determined for the first time. The corresponding B(M1) and B(E2) reduced transition strengths are discussed within the framework of large-scale shell model calculations to study the contribution of different particle-hole configurations, in particular for analyzing contributions from core-excited configurations. © 2018, SIF, Springer-Verlag GmbH Germany, part of Springer Nature., National Brain Research Centre Vetenskapsrådet Göran Gustafssons Stiftelse för Naturvetenskaplig och Medicinsk Forskning Firat University Scientific Research Projects Management Unit Ministerio de Economía y Competitividad Science and Technology Facilities Council, We thank the operators of the GANIL cyclotrons for providing the beam, their cooperation and technical support. We would also like to thank the EXOGAM, DIAMANT and Neutron Wall Collaborations. This work was supported by the Swedish Research Council under Grant Nos. 621-2014-5558, 621-2012-3805, and 621-2013-4323 and the Göran Gustafsson foundation, the Scientific Research Projects Coordination Unit of Istanbul University Project No. 47886 and 48101, the UK STFC under grant number ST/L005727/1, the Spanish Ministerio de Economía y Competitividad under grant FPA2014-52823-C2-1-P and the program Severo Ochoa (SEV-2014-0398), the Polish National Research Centre contracts no. 2013/08/M/ST2 /00257 (LEA COPIGAL) and 2016/22/M/ST2/00269, the Scientific and Technological Council of Turkey (Proj. no. 114F473). BMN, IK, ZD and JT acknowledge the financial support of GINOP-2.3.3-15-2016-00034. IK was supported by National Research, Development and Innovation Office NK-FIH, contract number PD 124717. The computations were performed on resources provided by the Swedish National Infrastructure for Computing (SNIC) at PDC, KTH, Stockholm.

Published
2018

18. Isospin Symmetry Breaking in Mirror Nuclei $^{23}$Mg$-$$^{23}$Na

Author

A. Boso, S.M. Lenzi, F. Recchia, J. Bonnard, S. Aydin, M.A. Bentley, B. Cederwall, E. Clement, G. De France, A. Di Nitto, A. Dijon, M. Doncel, F. Ghazi-Moradi, A. Gottardo, T. Henry, T. Hüyük, G. Jaworski, P.R. John, K. Juhász, I. Kuti, B. Melon, D. Mengoni, C. Michelagnoli, V. Modamio, D.R. Napoli, B.M. Nyakó, J. Nyberg, M. Palacz, J.J. Valiente-Dobón, Dipartimento di Fisica [Padova], Universita degli Studi di Padova, Aksaray University, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Boso, A., Lenzi, S. M., Recchia, F., Bonnard, J., Aydin, S., Bentley, M. A., Cederwall, B., Clement, E., De France, G., Di Nitto, A., Dijon, A., Doncel, M., Ghazi-Moradi, F., Gottardo, A., Henry, T., Huyu, T., Jaworski, G., John, P. R., Juhasz, K., Kuti, I., Melon, B., Mengoni, D., Michelagnoli, C., Modamio, V., Napoli, D. R., Nyako, B. M., Nyberg, J., Palacz, M., Valiente-Dobo, J. J., Sabire Yazıcı Fen Edebiyat Fakültesi, Di Nitto, Antonio -- 0000-0002-9319-366X, Cederwall, Bo -- 0000-0003-1771-2656, Huyuk, Tayfun -- 0000-0003-0597-9767, John, Philipp Rudolf -- 0000-0003-1994-7248, de France, Gilles -- 0000-0002-7439-1759, BOSO, ALBERTO -- 0000-0001-9670-8123, Clement, Emmanuel -- 0000-0003-1887-717X, GOTTARDO, Andrea -- 0000-0002-0390-5767, Napoli, Daniel R. -- 0000-0002-8154-6958, Università degli Studi di Padova = University of Padua (Unipd), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Particle physics, Rho meson, Statistics::Applications, Weak isospin, 010308 nuclear & particles physics, Spontaneous symmetry breaking, Physics::Medical Physics, Nuclear Theory, Nuclear structure, General Physics and Astronomy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Quantitative Biology::Cell Behavior, 13. Climate action, Isospin, 0103 physical sciences, Symmetry breaking, Mirror nuclei, 010306 general physics, Chiral symmetry breaking, Nuclear Experiment
Abstract

Zakopane Conference on Nuclear Physics - Extremes of the Nuclear Landscape -- AUG 28-SEP 04, 2016 -- Zakopane, POLAND, WOS: 000398717500011, Mirror energy differences (MED) are a direct consequence of isospin symmetry breaking. Moreover, the study of MED has proved to give valuable information of several nuclear structure properties. We present the results of an experiment performed in GANIL to study the MED in mirror nuclei Mg-23-Na-23 up to high spin. The experimental values are compared with state-of-the-art shell model calculations. This permits to enlighten several nuclear structure properties, such as the way in which the nucleons alignment proceeds, the radius variation with J, the role of the spin-orbit interaction and the importance of isospin symmetry breaking terms of nuclear origin.

Published
2016

19. Neutron Skin Effects in Mirror Energy Differences: The Case of ^{23}Mg-^{23}Na.

Author

Boso A, Lenzi SM, Recchia F, Bonnard J, Zuker AP, Aydin S, Bentley MA, Cederwall B, Clement E, de France G, Di Nitto A, Dijon A, Doncel M, Ghazi-Moradi F, Gadea A, Gottardo A, Henry T, Hüyük T, Jaworski G, John PR, Juhász K, Kuti I, Melon B, Mengoni D, Michelagnoli C, Modamio V, Napoli DR, Nyakó BM, Nyberg J, Palacz M, Timár J, and Valiente-Dobón JJ

Abstract

Energy differences between analogue states in the T=1/2 ^{23}Mg-^{23}Na mirror nuclei have been measured along the rotational yrast bands. This allows us to search for effects arising from isospin-symmetry-breaking interactions (ISB) and/or shape changes. Data are interpreted in the shell model framework following the method successfully applied to nuclei in the f_{7/2} shell. It is shown that the introduction of a schematic ISB interaction of the same type of that used in the f_{7/2} shell is needed to reproduce the data. An alternative novel description, applied here for the first time, relies on the use of an effective interaction deduced from a realistic charge-dependent chiral nucleon-nucleon potential. This analysis provides two important results: (i) The mirror energy differences give direct insight into the nuclear skin; (ii) the skin changes along the rotational bands are strongly correlated with the difference between the neutron and proton occupations of the s_{1/2} "halo" orbit.

Published
2018
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