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Start Over Author "Elseviers, J." Publisher elsevier science bv
4 results on '"Elseviers, J."'

1. Single-neutron orbits near Ni-78: Spectroscopy of the N=49 isotope Zn-79

Author

Orlandi, R., Mucher, D., Raabe, R., Jungclaus, A., Pain, S. D., Bildstein, V., Chapman, R., de Angelis, G., Johansen, J. G., Van Duppen, P., Andreyev, A. N., Bottoni, S., Cocolios, T. E., De Witte, H., Diriken, J., Elseviers, J., Flavigny, F., Gaffney, L. P., Gernhauser, R., Gottardo, A., Huyse, M., Illana, A., Konki, J., Kroll, T., Krucken, R., Lane, J. F. W., Liberati, V., Marsh, B., Nowak, K., Nowacki, F., Pakarinen, J., Rapisarda, E., Recchia, F., Reiter, P., Roger, T., Sahin, E., Seidlitz, M., Sieja, K., Smith, J. F., Dobon, J. J. Valiente, Von Schmid, M., Voulot, D., Warr, N., Wenander, F. K., Wimmer, K., Orlandi, R., Mucher, D., Raabe, R., Jungclaus, A., Pain, S. D., Bildstein, V., Chapman, R., de Angelis, G., Johansen, J. G., Van Duppen, P., Andreyev, A. N., Bottoni, S., Cocolios, T. E., De Witte, H., Diriken, J., Elseviers, J., Flavigny, F., Gaffney, L. P., Gernhauser, R., Gottardo, A., Huyse, M., Illana, A., Konki, J., Kroll, T., Krucken, R., Lane, J. F. W., Liberati, V., Marsh, B., Nowak, K., Nowacki, F., Pakarinen, J., Rapisarda, E., Recchia, F., Reiter, P., Roger, T., Sahin, E., Seidlitz, M., Sieja, K., Smith, J. F., Dobon, J. J. Valiente, Von Schmid, M., Voulot, D., Warr, N., Wenander, F. K., and Wimmer, K.

Abstract

Single-neutron states in the Z = 30, N = 49 isotope Zn-79 have been populated using the Zn-78(d,p)Zn-79 transfer reaction at REX-ISOLDE, CERN. The experimental setup allowed the combined detection of protons ejected in the reaction, and of y rays emitted by Zn-79. The analysis reveals that the lowest excited states populated in the reaction lie at approximately 1 MeV of excitation, and involve neutron orbits above the N = 50 shell gap. From the analysis of gamma-ray data and of proton angular distributions, characteristic of the amount of angular momentum transferred, a 5/2+ configuration was assigned to a state at 983 keV. Comparison with large-scale-shell-model calculations supports a robust neutron N = 50 shell-closure for Ni-78. These data constitute an important step towards the understanding of the magicity of 78Ni and of the structure of nuclei in the region. (C) 2014 The Authors. Published by Elsevier B.V.

Published
2015

2. Single-neutron orbits near Ni-78: Spectroscopy of the N=49 isotope Zn-79

Author

Orlandi, R., Mucher, D., Raabe, R., Jungclaus, A., Pain, S. D., Bildstein, V., Chapman, R., de Angelis, G., Johansen, J. G., Van Duppen, P., Andreyev, A. N., Bottoni, S., Cocolios, T. E., De Witte, H., Diriken, J., Elseviers, J., Flavigny, F., Gaffney, L. P., Gernhauser, R., Gottardo, A., Huyse, M., Illana, A., Konki, J., Kroll, T., Krucken, R., Lane, J. F. W., Liberati, V., Marsh, B., Nowak, K., Nowacki, F., Pakarinen, J., Rapisarda, E., Recchia, F., Reiter, P., Roger, T., Sahin, E., Seidlitz, M., Sieja, K., Smith, J. F., Dobon, J. J. Valiente, Von Schmid, M., Voulot, D., Warr, N., Wenander, F. K., Wimmer, K., Orlandi, R., Mucher, D., Raabe, R., Jungclaus, A., Pain, S. D., Bildstein, V., Chapman, R., de Angelis, G., Johansen, J. G., Van Duppen, P., Andreyev, A. N., Bottoni, S., Cocolios, T. E., De Witte, H., Diriken, J., Elseviers, J., Flavigny, F., Gaffney, L. P., Gernhauser, R., Gottardo, A., Huyse, M., Illana, A., Konki, J., Kroll, T., Krucken, R., Lane, J. F. W., Liberati, V., Marsh, B., Nowak, K., Nowacki, F., Pakarinen, J., Rapisarda, E., Recchia, F., Reiter, P., Roger, T., Sahin, E., Seidlitz, M., Sieja, K., Smith, J. F., Dobon, J. J. Valiente, Von Schmid, M., Voulot, D., Warr, N., Wenander, F. K., and Wimmer, K.

Abstract

Single-neutron states in the Z = 30, N = 49 isotope Zn-79 have been populated using the Zn-78(d,p)Zn-79 transfer reaction at REX-ISOLDE, CERN. The experimental setup allowed the combined detection of protons ejected in the reaction, and of y rays emitted by Zn-79. The analysis reveals that the lowest excited states populated in the reaction lie at approximately 1 MeV of excitation, and involve neutron orbits above the N = 50 shell gap. From the analysis of gamma-ray data and of proton angular distributions, characteristic of the amount of angular momentum transferred, a 5/2+ configuration was assigned to a state at 983 keV. Comparison with large-scale-shell-model calculations supports a robust neutron N = 50 shell-closure for Ni-78. These data constitute an important step towards the understanding of the magicity of 78Ni and of the structure of nuclei in the region. (C) 2014 The Authors. Published by Elsevier B.V.

Published
2015

3. Study of the deformation-driving nu d(5/2) orbital in Ni-67(28)39 using one-neutron transfer reactions

Author

Diriken, J., Patronis, N., Andreyev, A. N., Antalic, S., Bildstein, V., Blazhev, A., Darby, I. G., De Witte, H., Eberth, J., Elseviers, J., Fedosseev, V. N., Flavigny, F., Fransen, Ch., Georgiev, G., Gernhauser, R., Hess, H., Huyse, M., Jolie, J., Kroell, Th., Kruecken, R., Lutter, R., Marsh, B. A., Mertzimekis, T., Muecher, D., Nowacki, F., Orlandi, R., Pakou, A., Raabe, R., Randisi, G., Reiter, P., Roger, T., Seidlitz, M., Seliverstov, M., Sieja, K., Sotty, C., Tornqvist, H., De Walle, J. Van, Van Duppen, P., Voulot, D., Warr, N., Wenander, F., Wimmer, K., Diriken, J., Patronis, N., Andreyev, A. N., Antalic, S., Bildstein, V., Blazhev, A., Darby, I. G., De Witte, H., Eberth, J., Elseviers, J., Fedosseev, V. N., Flavigny, F., Fransen, Ch., Georgiev, G., Gernhauser, R., Hess, H., Huyse, M., Jolie, J., Kroell, Th., Kruecken, R., Lutter, R., Marsh, B. A., Mertzimekis, T., Muecher, D., Nowacki, F., Orlandi, R., Pakou, A., Raabe, R., Randisi, G., Reiter, P., Roger, T., Seidlitz, M., Seliverstov, M., Sieja, K., Sotty, C., Tornqvist, H., De Walle, J. Van, Van Duppen, P., Voulot, D., Warr, N., Wenander, F., and Wimmer, K.

Abstract

The nu g(9/2), d(5/2), s(1/2) orbitals are assumed to be responsible for the swift onset of collectivity observed in the region below Ni-68. Especially the single-particle energies and strengths of these orbitals are of importance. We studied such properties in the nearby Ni-67 nucleus, by performing a (d, p)-experiment in inverse kinematics employing a post-accelerated radioactive ion beam (RIB) at the REX-ISOLDE facility. The experiment was performed at an energy of 2.95 MeV/u using a combination of the T-REX particle detectors, the Miniball gamma-detection array and a newly-developed delayed-correlation technique as to investigate mu s-isomers. Angular distributions of the ground state and multiple excited states in 67Ni were obtained and compared with DWBA cross-section calculations, leading to the identification of positive-parity states with substantial nu g(9/2) (1007keV) and nu d(5/2) (2207 keV and 3277 keV) single-particle strengths up to an excitation energy of 5.8 MeV. 50% of the nu d(5/2) single-particle strength relative to the nu g(9/2)-orbital is concentrated in and shared between the first two observed 5/2(+) levels. A comparison with extended Shell Model calculations and equivalent (He-3, d) studies in the region around Zr-90(40)50 highlights similarities for the strength of the negative-parity pf and positive-parity g(9/2) state, but differences are observed for the d(5/2) single-particle strength. (C) 2014 The Authors. Published by Elsevier B.V.

Published
2014

4. Study of the deformation-driving nu d(5/2) orbital in Ni-67(28)39 using one-neutron transfer reactions

Author

Diriken, J., Patronis, N., Andreyev, A. N., Antalic, S., Bildstein, V., Blazhev, A., Darby, I. G., De Witte, H., Eberth, J., Elseviers, J., Fedosseev, V. N., Flavigny, F., Fransen, Ch., Georgiev, G., Gernhauser, R., Hess, H., Huyse, M., Jolie, J., Kroell, Th., Kruecken, R., Lutter, R., Marsh, B. A., Mertzimekis, T., Muecher, D., Nowacki, F., Orlandi, R., Pakou, A., Raabe, R., Randisi, G., Reiter, P., Roger, T., Seidlitz, M., Seliverstov, M., Sieja, K., Sotty, C., Tornqvist, H., De Walle, J. Van, Van Duppen, P., Voulot, D., Warr, N., Wenander, F., Wimmer, K., Diriken, J., Patronis, N., Andreyev, A. N., Antalic, S., Bildstein, V., Blazhev, A., Darby, I. G., De Witte, H., Eberth, J., Elseviers, J., Fedosseev, V. N., Flavigny, F., Fransen, Ch., Georgiev, G., Gernhauser, R., Hess, H., Huyse, M., Jolie, J., Kroell, Th., Kruecken, R., Lutter, R., Marsh, B. A., Mertzimekis, T., Muecher, D., Nowacki, F., Orlandi, R., Pakou, A., Raabe, R., Randisi, G., Reiter, P., Roger, T., Seidlitz, M., Seliverstov, M., Sieja, K., Sotty, C., Tornqvist, H., De Walle, J. Van, Van Duppen, P., Voulot, D., Warr, N., Wenander, F., and Wimmer, K.

Abstract

The nu g(9/2), d(5/2), s(1/2) orbitals are assumed to be responsible for the swift onset of collectivity observed in the region below Ni-68. Especially the single-particle energies and strengths of these orbitals are of importance. We studied such properties in the nearby Ni-67 nucleus, by performing a (d, p)-experiment in inverse kinematics employing a post-accelerated radioactive ion beam (RIB) at the REX-ISOLDE facility. The experiment was performed at an energy of 2.95 MeV/u using a combination of the T-REX particle detectors, the Miniball gamma-detection array and a newly-developed delayed-correlation technique as to investigate mu s-isomers. Angular distributions of the ground state and multiple excited states in 67Ni were obtained and compared with DWBA cross-section calculations, leading to the identification of positive-parity states with substantial nu g(9/2) (1007keV) and nu d(5/2) (2207 keV and 3277 keV) single-particle strengths up to an excitation energy of 5.8 MeV. 50% of the nu d(5/2) single-particle strength relative to the nu g(9/2)-orbital is concentrated in and shared between the first two observed 5/2(+) levels. A comparison with extended Shell Model calculations and equivalent (He-3, d) studies in the region around Zr-90(40)50 highlights similarities for the strength of the negative-parity pf and positive-parity g(9/2) state, but differences are observed for the d(5/2) single-particle strength. (C) 2014 The Authors. Published by Elsevier B.V.

Published
2014

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