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Start Over Author "Taprogge, J" Publisher elsevier science bv
13 results on '"Taprogge, J"'

1. New isomers in Pd-125(79) and Pd-127(81): Competing proton and neutron excitations in neutron-rich palladium nuclides towards the N=82 shell closure

Author

Watanabe, H., Wang, H. K., Lorusso, G., Nishimura, S., Xu, Z. Y., Sumikama, T., Soderstrom, P. -A., Doornenbal, P., Browne, F., Gey, G., Jung, H. S., Taprogge, J., Vajta, Zs., Wu, J., Yagi, A., Baba, H., Benzoni, G., Chae, K. Y., Crespi, F. C. L., Fukuda, N., Gernhauser, R., Inabe, N., Isobe, T., Jungclaus, A., Kameda, D., Kim, G. D., Kim, Y. K., Kojouharov, I., Kondev, F. G., Kubo, T., Kurz, N., Kwon, Y. K., Lane, G. J., Lin, Z., Moon, C. -B., Montaner-Piza, A., Moschner, K., Naqvi, F., Niikura, M., Nishibata, H., Nishimura, D., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., Sakurai, H., Schaffner, H., Simpson, G. S., Steiger, K., Sun, Y., Suzuki, H., Takeda, H., Wendt, A., Yoshinaga, K., Watanabe, H., Wang, H. K., Lorusso, G., Nishimura, S., Xu, Z. Y., Sumikama, T., Soderstrom, P. -A., Doornenbal, P., Browne, F., Gey, G., Jung, H. S., Taprogge, J., Vajta, Zs., Wu, J., Yagi, A., Baba, H., Benzoni, G., Chae, K. Y., Crespi, F. C. L., Fukuda, N., Gernhauser, R., Inabe, N., Isobe, T., Jungclaus, A., Kameda, D., Kim, G. D., Kim, Y. K., Kojouharov, I., Kondev, F. G., Kubo, T., Kurz, N., Kwon, Y. K., Lane, G. J., Lin, Z., Moon, C. -B., Montaner-Piza, A., Moschner, K., Naqvi, F., Niikura, M., Nishibata, H., Nishimura, D., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., Sakurai, H., Schaffner, H., Simpson, G. S., Steiger, K., Sun, Y., Suzuki, H., Takeda, H., Wendt, A., and Yoshinaga, K.

Abstract

The neutron-rich isotopes of palladium have attracted considerable interest in terms of the evolution of the N = 82 neutron shell closure and its influence on the r-process nucleosynthesis. In this Letter, we present the first spectroscopic information on the excited states in Pd-125(79) and Pd-127(81) studied using the EURICA gamma-ray spectrometer, following production via in-flight fission of a high-intensity U-238 beam at the RIBF facility. New isomeric states with half-lives of 144(4) ns and 39(6) mu s have been assigned spins and parities of (23/2(+)) and (19/2(+)) in Pd-125 and Pd-127, respectively. The observed level properties are compared to a shell-model calculation, suggesting the competition between proton excitations and neutron excitations in the proton-hole and neutron-hole systems in the vicinity of the doubly magic nucleus Sn-132. (C) 2019 The Author(s). Published by Elsevier B.V.

Published
2019

2. New isomers in Pd-125(79) and Pd-127(81): Competing proton and neutron excitations in neutron-rich palladium nuclides towards the N=82 shell closure

Author

Watanabe, H., Wang, H. K., Lorusso, G., Nishimura, S., Xu, Z. Y., Sumikama, T., Soderstrom, P. -A., Doornenbal, P., Browne, F., Gey, G., Jung, H. S., Taprogge, J., Vajta, Zs., Wu, J., Yagi, A., Baba, H., Benzoni, G., Chae, K. Y., Crespi, F. C. L., Fukuda, N., Gernhauser, R., Inabe, N., Isobe, T., Jungclaus, A., Kameda, D., Kim, G. D., Kim, Y. K., Kojouharov, I., Kondev, F. G., Kubo, T., Kurz, N., Kwon, Y. K., Lane, G. J., Lin, Z., Moon, C. -B., Montaner-Piza, A., Moschner, K., Naqvi, F., Niikura, M., Nishibata, H., Nishimura, D., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., Sakurai, H., Schaffner, H., Simpson, G. S., Steiger, K., Sun, Y., Suzuki, H., Takeda, H., Wendt, A., Yoshinaga, K., Watanabe, H., Wang, H. K., Lorusso, G., Nishimura, S., Xu, Z. Y., Sumikama, T., Soderstrom, P. -A., Doornenbal, P., Browne, F., Gey, G., Jung, H. S., Taprogge, J., Vajta, Zs., Wu, J., Yagi, A., Baba, H., Benzoni, G., Chae, K. Y., Crespi, F. C. L., Fukuda, N., Gernhauser, R., Inabe, N., Isobe, T., Jungclaus, A., Kameda, D., Kim, G. D., Kim, Y. K., Kojouharov, I., Kondev, F. G., Kubo, T., Kurz, N., Kwon, Y. K., Lane, G. J., Lin, Z., Moon, C. -B., Montaner-Piza, A., Moschner, K., Naqvi, F., Niikura, M., Nishibata, H., Nishimura, D., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., Sakurai, H., Schaffner, H., Simpson, G. S., Steiger, K., Sun, Y., Suzuki, H., Takeda, H., Wendt, A., and Yoshinaga, K.

Abstract

The neutron-rich isotopes of palladium have attracted considerable interest in terms of the evolution of the N = 82 neutron shell closure and its influence on the r-process nucleosynthesis. In this Letter, we present the first spectroscopic information on the excited states in Pd-125(79) and Pd-127(81) studied using the EURICA gamma-ray spectrometer, following production via in-flight fission of a high-intensity U-238 beam at the RIBF facility. New isomeric states with half-lives of 144(4) ns and 39(6) mu s have been assigned spins and parities of (23/2(+)) and (19/2(+)) in Pd-125 and Pd-127, respectively. The observed level properties are compared to a shell-model calculation, suggesting the competition between proton excitations and neutron excitations in the proton-hole and neutron-hole systems in the vicinity of the doubly magic nucleus Sn-132. (C) 2019 The Author(s). Published by Elsevier B.V.

Published
2019

3. The role of core excitations in the structure and decay of the 16(+) spin-gap isomer in Cd-96

Author

Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Back, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, Aila, Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A, Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., Zhu, Y., Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Back, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, Aila, Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A, Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., and Zhu, Y.

Abstract

The first evidence for beta-delayed proton emission from the 16(+) spin gap isomer in Cd-96 is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. beta p branching ratios for the ground state and 16(+) isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of Cd-95. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for l = 0, 2, 4 proton emission from three resonance-like states in Ag-96, that are populated by the beta decay of the isomer, and the results compared to the new data. The calculations suggest that l = 2 proton emission from the resonance states, which reside similar to 5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16(+) state.

Published
2017
Full Text
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4. The role of core excitations in the structure and decay of the 16(+) spin-gap isomer in Cd-96

Author

Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Back, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, Aila, Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A, Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., Zhu, Y., Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Back, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, Aila, Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A, Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., and Zhu, Y.

Abstract

The first evidence for beta-delayed proton emission from the 16(+) spin gap isomer in Cd-96 is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. beta p branching ratios for the ground state and 16(+) isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of Cd-95. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for l = 0, 2, 4 proton emission from three resonance-like states in Ag-96, that are populated by the beta decay of the isomer, and the results compared to the new data. The calculations suggest that l = 2 proton emission from the resonance states, which reside similar to 5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16(+) state.

Published
2017
Full Text
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5. The role of core excitations in the structure and decay of the 16(+) spin-gap isomer in Cd-96

Author

Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Back, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, Aila, Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A, Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., Zhu, Y., Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Back, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, Aila, Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A, Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., and Zhu, Y.

Abstract

The first evidence for beta-delayed proton emission from the 16(+) spin gap isomer in Cd-96 is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. beta p branching ratios for the ground state and 16(+) isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of Cd-95. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for l = 0, 2, 4 proton emission from three resonance-like states in Ag-96, that are populated by the beta decay of the isomer, and the results compared to the new data. The calculations suggest that l = 2 proton emission from the resonance states, which reside similar to 5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16(+) state.

Published
2017
Full Text
View/download PDF

6. The role of core excitations in the structure and decay of the 16(+) spin-gap isomer in Cd-96

Author

Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Back, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, A., Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A., Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., Zhu, Y., Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Back, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, A., Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A., Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., and Zhu, Y.

Abstract

The first evidence for beta-delayed proton emission from the 16(+) spin gap isomer in Cd-96 is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. beta p branching ratios for the ground state and 16(+) isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of Cd-95. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for l = 0, 2, 4 proton emission from three resonance-like states in Ag-96, that are populated by the beta decay of the isomer, and the results compared to the new data. The calculations suggest that l = 2 proton emission from the resonance states, which reside similar to 5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16(+) state. (C) 2017 The Authors. Published by Elsevier B.V.

Published
2017

7. Observation of a gamma-decaying millisecond isomeric state in Cd-128(80)

Author

Jungclaus, A., Grawe, H., Nishimura, S., Doornenbal, P., Lorusso, G., Simpson, G. S., Soderstrom, P. -A., Sumikama, T., Taprogge, J., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhaeuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Shimizu, Y., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Boenig, S., Chae, K. Y., Coraggio, L., Daugas, J. -M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Itaco, N., Kondev, F. G., Kroell, T., Lane, G. J., Montaner-Piza, A., Moschner, K., Muecher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., Wendt, A., Jungclaus, A., Grawe, H., Nishimura, S., Doornenbal, P., Lorusso, G., Simpson, G. S., Soderstrom, P. -A., Sumikama, T., Taprogge, J., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhaeuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Shimizu, Y., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Boenig, S., Chae, K. Y., Coraggio, L., Daugas, J. -M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Itaco, N., Kondev, F. G., Kroell, T., Lane, G. J., Montaner-Piza, A., Moschner, K., Muecher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., and Wendt, A.

Abstract

A new high-spin isomer in the neutron-rich nucleus Cd-128 was populated in the projectile fission of a U-238 beam at the Radioactive Isotope Beam Factory at RIKEN. A half-life of T-1/2 = 6.3(8) mswas measured for the new state which was tentatively assigned a spin/parity of (15(-)). The experimental results are compared to shell model calculations performed using state-of-the-art realistic effective interactions and to the neighbouring nucleus Cd-129. In the present experiment no evidence was found for the decay of a 18(+) E6 spin-trap isomer, based on the complete alignment of the two-neutron and two-proton holes in the 0h(11/2) and the 0g(9/2) orbit, respectively, which is predicted to exist by the shell model. (C) 2017 The Author(s). Published by Elsevier B.V.

Published
2017

8. The role of core excitations in the structure and decay of the 16(+) spin-gap isomer in Cd-96

Author

Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Back, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, Aila, Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A, Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., Zhu, Y., Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Back, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, Aila, Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A, Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., and Zhu, Y.

Abstract

The first evidence for beta-delayed proton emission from the 16(+) spin gap isomer in Cd-96 is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. beta p branching ratios for the ground state and 16(+) isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of Cd-95. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for l = 0, 2, 4 proton emission from three resonance-like states in Ag-96, that are populated by the beta decay of the isomer, and the results compared to the new data. The calculations suggest that l = 2 proton emission from the resonance states, which reside similar to 5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16(+) state.

Published
2017
Full Text
View/download PDF

9. The role of core excitations in the structure and decay of the 16(+) spin-gap isomer in Cd-96

Author

Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Back, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, A., Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A., Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., Zhu, Y., Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Back, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, A., Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A., Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., and Zhu, Y.

Abstract

The first evidence for beta-delayed proton emission from the 16(+) spin gap isomer in Cd-96 is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. beta p branching ratios for the ground state and 16(+) isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of Cd-95. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for l = 0, 2, 4 proton emission from three resonance-like states in Ag-96, that are populated by the beta decay of the isomer, and the results compared to the new data. The calculations suggest that l = 2 proton emission from the resonance states, which reside similar to 5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16(+) state. (C) 2017 The Authors. Published by Elsevier B.V.

Published
2017

10. Observation of a gamma-decaying millisecond isomeric state in Cd-128(80)

Author

Jungclaus, A., Grawe, H., Nishimura, S., Doornenbal, P., Lorusso, G., Simpson, G. S., Soderstrom, P. -A., Sumikama, T., Taprogge, J., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhaeuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Shimizu, Y., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Boenig, S., Chae, K. Y., Coraggio, L., Daugas, J. -M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Itaco, N., Kondev, F. G., Kroell, T., Lane, G. J., Montaner-Piza, A., Moschner, K., Muecher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., Wendt, A., Jungclaus, A., Grawe, H., Nishimura, S., Doornenbal, P., Lorusso, G., Simpson, G. S., Soderstrom, P. -A., Sumikama, T., Taprogge, J., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhaeuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Shimizu, Y., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Boenig, S., Chae, K. Y., Coraggio, L., Daugas, J. -M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Itaco, N., Kondev, F. G., Kroell, T., Lane, G. J., Montaner-Piza, A., Moschner, K., Muecher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., and Wendt, A.

Abstract

A new high-spin isomer in the neutron-rich nucleus Cd-128 was populated in the projectile fission of a U-238 beam at the Radioactive Isotope Beam Factory at RIKEN. A half-life of T-1/2 = 6.3(8) mswas measured for the new state which was tentatively assigned a spin/parity of (15(-)). The experimental results are compared to shell model calculations performed using state-of-the-art realistic effective interactions and to the neighbouring nucleus Cd-129. In the present experiment no evidence was found for the decay of a 18(+) E6 spin-trap isomer, based on the complete alignment of the two-neutron and two-proton holes in the 0h(11/2) and the 0g(9/2) orbit, respectively, which is predicted to exist by the shell model. (C) 2017 The Author(s). Published by Elsevier B.V.

Published
2017

11. The role of core excitations in the structure and decay of the 16(+) spin-gap isomer in Cd-96

Author

Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Back, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, Aila, Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A, Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., Zhu, Y., Davies, P. J., Grawe, H., Moschner, K., Blazhev, A., Wadsworth, R., Boutachkov, P., Ameil, F., Yagi, A., Baba, H., Back, T., Dewald, M., Doornenbal, P., Faestermann, T., Gengelbach, Aila, Gerl, J., Gernhaeeuserk, R., Go, S., Gorska, M., Gregor, E., Isobe, T., Jenkins, D. G., Hotaka, H., Jolie, J., Kojouharov, I., Kurz, N., Lewitowicz, M., Lorusso, G., Maier, L., Merchan, E., Naqvi, F., Nishibata, H., Nishimura, D., Nishimura, S., Nowacki, F., Pietralla, N., Schaffne, H., Soderstrom, P-A, Jung, H. S., Steiger, K., Sumikama, T., Taprogge, J., Thoele, P., Warr, N., Watanabe, H., Werner, V., Xu, Z. Y., Yoshinaga, K., and Zhu, Y.

Abstract

The first evidence for beta-delayed proton emission from the 16(+) spin gap isomer in Cd-96 is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. beta p branching ratios for the ground state and 16(+) isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of Cd-95. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for l = 0, 2, 4 proton emission from three resonance-like states in Ag-96, that are populated by the beta decay of the isomer, and the results compared to the new data. The calculations suggest that l = 2 proton emission from the resonance states, which reside similar to 5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16(+) state.

Published
2017
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12. Installation and commissioning of EURICA - Euroball-RIKEN Cluster Array

Author

Soederstroem, P. -A., Nishimura, S., Doornenbal, P., Lorusso, G., Sumikama, T., Watanabe, H., Xu, Z. Y., Baba, H., Browne, F., Go, S., Gey, G., Isobe, T., Jung, H. -S., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kurz, N., Kwon, Y. K., Li, Z., Moschner, K., Nakao, T., Nishibata, H., Nishimura, M., Odahara, A., Sakurai, H., Schaffner, H., Shimoda, T., Taprogge, J., Vajta, Zs., Werner, V., Wu, J., Yagi, A., Yoshinaga, K., Soederstroem, P. -A., Nishimura, S., Doornenbal, P., Lorusso, G., Sumikama, T., Watanabe, H., Xu, Z. Y., Baba, H., Browne, F., Go, S., Gey, G., Isobe, T., Jung, H. -S., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kurz, N., Kwon, Y. K., Li, Z., Moschner, K., Nakao, T., Nishibata, H., Nishimura, M., Odahara, A., Sakurai, H., Schaffner, H., Shimoda, T., Taprogge, J., Vajta, Zs., Werner, V., Wu, J., Yagi, A., and Yoshinaga, K.

Abstract

EURICA is a project at AIKEN Nishina Center aimed at studying a wide range of exotic nuclei through beta-decay measurements and high-resolution gamma-ray spectroscopy. The setup is located behind the BigRIPS fragment separator and the ZeroDegree spectrometer at the RIBF. EURICA consists of the HPGe cluster detectors from the previous Euroball and RISING projects, together with double-sided silicon-strip detectors for beta-decay counting and lifetime measurements. In total, this setup provides us with the possibility to study several aspects of the exotic nuclei produced at the RIBF. (C) 2013 Elsevier B.V. All rights reserved.

Published
2013

13. Installation and commissioning of EURICA - Euroball-RIKEN Cluster Array

Author

Soederstroem, P. -A., Nishimura, S., Doornenbal, P., Lorusso, G., Sumikama, T., Watanabe, H., Xu, Z. Y., Baba, H., Browne, F., Go, S., Gey, G., Isobe, T., Jung, H. -S., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kurz, N., Kwon, Y. K., Li, Z., Moschner, K., Nakao, T., Nishibata, H., Nishimura, M., Odahara, A., Sakurai, H., Schaffner, H., Shimoda, T., Taprogge, J., Vajta, Zs., Werner, V., Wu, J., Yagi, A., Yoshinaga, K., Soederstroem, P. -A., Nishimura, S., Doornenbal, P., Lorusso, G., Sumikama, T., Watanabe, H., Xu, Z. Y., Baba, H., Browne, F., Go, S., Gey, G., Isobe, T., Jung, H. -S., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kurz, N., Kwon, Y. K., Li, Z., Moschner, K., Nakao, T., Nishibata, H., Nishimura, M., Odahara, A., Sakurai, H., Schaffner, H., Shimoda, T., Taprogge, J., Vajta, Zs., Werner, V., Wu, J., Yagi, A., and Yoshinaga, K.

Abstract

EURICA is a project at AIKEN Nishina Center aimed at studying a wide range of exotic nuclei through beta-decay measurements and high-resolution gamma-ray spectroscopy. The setup is located behind the BigRIPS fragment separator and the ZeroDegree spectrometer at the RIBF. EURICA consists of the HPGe cluster detectors from the previous Euroball and RISING projects, together with double-sided silicon-strip detectors for beta-decay counting and lifetime measurements. In total, this setup provides us with the possibility to study several aspects of the exotic nuclei produced at the RIBF. (C) 2013 Elsevier B.V. All rights reserved.

Published
2013

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