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3 results on '"Bondili, N. S."'

1. Isospin Symmetry in the sd Shell: Transition Strengths in the Neutron-deficient sd Shell Nucleus 33Ar

Author

Wendt, A., Taprogge, J., Reiter, P., Golubev, Pavel, Grawe, H., Pietri, S., Boutachkov, P., Algora, A., Ameil, F., Bentley, M. A., Blazhev, A., Bloor, D., Bondili, N. S., Bowry, M., Bracco, A., Braun, N., Camera, F., Cederkäll, Joakim, Crespi, F., de la Salle, A., DiJulio, Douglas, Doornenbal, P., Geibel, K., Gellanki, Jnaneswari, Gerl, J., Grȩbosz, J., Guastalla, G., Habermann, T., Hackstein, M., Hoischen, R., Jungclaus, A., Merchán, E., Million, B., Morales, A., Moschner, K., Podolyák, Zs., Pietralla, N., Ralet, D., Reese, M., Rudolph, Dirk, Scruton, L., Siebeck, B., Warr, N., Wieland, O., and Wollersheim, H. J.

Subjects
isospin symmetry, gamma-ray spectroscopy, Nuclear Theory, Subatomic Physics, Nuclear Experiment, relativistic projectile fragmentation
Abstract

Reduced transition strengths of the deexciting transitions from the first two excited states in 33Ar were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary 36Ar beam on a 9Be target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The 33Ar beam hit a secondary 197Au target with an energy of approximately 145 MeV/nucleon. An array of high-purity germanium cluster detectors and large-volume BaF2 scintillator detectors were employed for γ -ray spectroscopy at the secondary target position. The Lund-York-Cologne Calorimeter was used to track the outgoing ions and to identify the nuclear reaction channels. For the two lowest energy excited states of 33Ar the reduced transition strengths have been determined. With these first results the Tz = −3/2 nucleus 33Ar is now, together with 21Na (Tz = −1/2), the only neutron-deficient odd-A sd shell nucleus in which experimental transition strengths are available. The experimental values are compared to results of shell-model calculations which describe simultaneously mirror-energy differences and transition-strength values of mirror pairs in the sd shell in a consistent way.

Published
2014

2. Isospin symmetry in the sd shell: Transition strengths in the neutron-deficient sd shell nucleus Ar-33

Author

Wendt, A., Taprogge, J., Reiter, P., Golubev, P., Grawe, H., Pietri, S., Boutachkov, P., Algora, A., Ameil, F., Bentley, M. A., Blazhev, A., Bloor, D., Bondili, N. S., Bowry, M., Bracco, A., Braun, N., Camera, F., Cederkall, J., Crespi, F., de la Salle, A., DiJulio, D., Doornenbal, P., Geibel, K., Gellanki, J., Gerl, J., Grebosz, J., Guastalla, G., Habermann, T., Hackstein, M., Hoischen, R., Jungclaus, A., Merchan, E., Million, B., Morales, A., Moschner, K., Podolyak, Zs., Pietralla, N., Ralet, D., Reese, M., Rudolph, D., Scruton, L., Siebeck, B., Warr, N., Wieland, O., Wollersheim, H. J., Wendt, A., Taprogge, J., Reiter, P., Golubev, P., Grawe, H., Pietri, S., Boutachkov, P., Algora, A., Ameil, F., Bentley, M. A., Blazhev, A., Bloor, D., Bondili, N. S., Bowry, M., Bracco, A., Braun, N., Camera, F., Cederkall, J., Crespi, F., de la Salle, A., DiJulio, D., Doornenbal, P., Geibel, K., Gellanki, J., Gerl, J., Grebosz, J., Guastalla, G., Habermann, T., Hackstein, M., Hoischen, R., Jungclaus, A., Merchan, E., Million, B., Morales, A., Moschner, K., Podolyak, Zs., Pietralla, N., Ralet, D., Reese, M., Rudolph, D., Scruton, L., Siebeck, B., Warr, N., Wieland, O., and Wollersheim, H. J.

Abstract

Reduced transition strengths of the deexciting transitions from the first two excited states in Ar-33 were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary Ar-36 beam on a Be-9 target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The (33A)r beam hit a secondary Au-197 target with an energy of approximately 145 MeV/nucleon. An array of high-purity germanium cluster detectors and large-volume BaF2 scintillator detectors were employed for gamma-ray spectroscopy at the secondary target position. The Lund-York-Cologne Calorimeter was used to track the outgoing ions and to identify the nuclear reaction channels. For the two lowest energy excited states of Ar-33 the reduced transition strengths have been determined. With these first results the T-z = -3/2 nucleus Ar-33 is now, together with Na-21 (T-z = -1/2), the only neutron-deficient odd-A sd shell nucleus in which experimental transition strengths are available. The experimental values are compared to results of shell-model calculations which describe simultaneously mirror-energy differences and transition-strength values of mirror pairs in the sd shell in a consistent way.

Published
2014

3. Isospin symmetry in the sd shell: Transition strengths in the neutron-deficient sd shell nucleus 33Ar.

Author

Wendt, A., Taprogge, J., Reiter, P., Golubev, P., Grawe, H., Pietri, S., Boutachkov, P., Algora, A., Ameil, F., Bentley, M. A., Blazhev, A., Bloor, D., Bondili, N. S., Bowry, M., Bracco, A., Braun, N., Camera, F., Cederkäll, J., Crespi, F., and de la Salle, A.

Subjects
*NUCLEAR isospin, *NUCLEAR shell theory, *TRANSITION strengths, *SYMMETRIES (Quantum mechanics), *EXCITED state energies, *ION beams, *GROUND state (Quantum mechanics), *NEUTRONS
Abstract

Reduced transition strengths of the deexciting transitions from the first two excited states in 33Ar were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary 36Ar beam on a 9Be target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The 33Ar beam hit a secondary 197Au target with an energy of approximately 145 MeV/nucleon. An array of high-purity germanium cluster detectors and large-volume BaF2 scintillator detectors were employed for γ-ray spectroscopy at the secondary target position. The Lund-York-Cologne Calorimeter was used to track the outgoing ions and to identify the nuclear reaction channels. For the two lowest energy excited states of 33Ar the reduced transition strengths have been determined. With these first results the Tz = -3/2 nucleus 33Ar is now, together with 21Na (Tz = -1/2), the only neutron-deficient odd-A sd shell nucleus in which experimental transition strengths are available. The experimental values are compared to results of shell-model calculations which describe simultaneously mirror-energy differences and transition-strength values of mirror pairs in the sd shell in a consistent way. [ABSTRACT FROM AUTHOR]

Published
2014
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