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29 results on '"Vajta, Zs"'

1. Sequential Nature of (p,3p) Two-Proton Knockout from Neutron-Rich Nuclei

Author

Frotscher, A., primary, Gómez-Ramos, M., additional, Obertelli, A., additional, Doornenbal, P., additional, Authelet, G., additional, Baba, H., additional, Calvet, D., additional, Château, F., additional, Chen, S., additional, Corsi, A., additional, Delbart, A., additional, Gheller, J.-M., additional, Giganon, A., additional, Gillibert, A., additional, Isobe, T., additional, Lapoux, V., additional, Matsushita, M., additional, Momiyama, S., additional, Motobayashi, T., additional, Niikura, M., additional, Otsu, H., additional, Paul, N., additional, Péron, C., additional, Peyaud, A., additional, Pollacco, E. C., additional, Roussé, J.-Y., additional, Sakurai, H., additional, Santamaria, C., additional, Sasano, M., additional, Shiga, Y., additional, Shimizu, N., additional, Steppenbeck, D., additional, Takeuchi, S., additional, Taniuchi, R., additional, Uesaka, T., additional, Wang, H., additional, Yoneda, K., additional, Ando, T., additional, Arici, T., additional, Blazhev, A., additional, Browne, F., additional, Bruce, A. M., additional, Carroll, R., additional, Chung, L. X., additional, Cortés, M. L., additional, Dewald, M., additional, Ding, B., additional, Dombradi, Zs., additional, Flavigny, F., additional, Franchoo, S., additional, Giacoppo, F., additional, Górska, M., additional, Gottardo, A., additional, Hadyńska-Klęk, K., additional, Korkulu, Z., additional, Koyama, S., additional, Kubota, Y., additional, Jungclaus, A., additional, Lee, J., additional, Lettmann, M., additional, Linh, B. D., additional, Liu, J., additional, Liu, Z., additional, Lizarazo, C., additional, Louchart, C., additional, Lozeva, R., additional, Matsui, K., additional, Miyazaki, T., additional, Moschner, K., additional, Nagamine, S., additional, Nakatsuka, N., additional, Nita, C., additional, Nishimura, S., additional, Nobs, C. R., additional, Olivier, L., additional, Ota, S., additional, Patel, Z., additional, Podolyák, Zs., additional, Rudigier, M., additional, Sahin, E., additional, Saito, T. Y., additional, Shand, C., additional, Söderström, P.-A., additional, Stefan, I. G., additional, Sumikama, T., additional, Suzuki, D., additional, Orlandi, R., additional, Vaquero, V., additional, Vajta, Zs., additional, Werner, V., additional, Wimmer, K., additional, Wu, J., additional, and Xu, Z., additional

Published
2020
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2. Proton Shell Evolution below ^{132}Sn: First Measurement of Low-Lying β-Emitting Isomers in ^{123,125}Ag

Author

Chen, Z. Q., Li, Z. H., Hua, H., Watanabe, H., Yuan, C. X., Zhang, S. Q., Lorusso, G., Nishimura, S., Baba, H., Browne, F., Benzoni, G., Chae, K. Y., Crespi, F. C. L., Doornenbal, P., Fukuda, N., Gey, G., Gernhäuser, R., Inabe, N., Isobe, T., Jiang, D. X., Jungclaus, A., Jung, H. S., Jin, Y., Kameda, D., Kim, G. D., Kim, Y. K., Kojouharov, I., Kondev, F. G., Kubo, T., Kurz, N., Kwon, Y. K., Li, X. Q., Lou, J. L., Lane, G. J., Li, C. G., Luo, D. W., Montaner-Pizá, A., Moschner, K., Niu, C. Y., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyak, Zs., Sumikama, T., Söderström, P.-A., Sakurai, H., Schaffner, H., Simpson, G. S., Steiger, K., Suzuki, H., Taprogge, J., Takeda, H., Vajta, Zs., Wang, H. K., Wu, J., Wendt, A., Wang, C. G., Wu, H. Y., Wang, X., Wu, C. G., Xu, C., Xu, Z. Y., Yagi, A., Ye, Y. L., and Yoshinaga, K.

Abstract

The β-delayed γ-ray spectroscopy of neutron-rich 123;125Ag isotopes is investigated at the Radioactive Isotope Beam Factory of RIKEN and the long-predicted 1/2¯ β-emitting isomers in 123;125Ag are identified for the first time. With the new experimental results, the systematic trend of energy spacing between the lowest 9/2+ and 1/2¯ levels is extended in Ag isotopes up to N = 78, providing a clear signal for the reduction of the Z = 40 subshell gap in Ag towards N = 82. Shellmodel calculations with the state-of-the-art VMU plus M3Y spin-orbit interaction give a satisfactory description of the low-lying states in 123;125Ag. The tensor force is found to play a crucial role in the evolution of the size of the Z = 40 subshell gap. The observed inversion of the single particle levels around 123Ag can be well interpreted in terms of the monopole shift of the π1g9/2 orbitals mainly caused by the increasing occupation of ʋ1h11/2 orbitals.

Published
2019

3. Proton Shell Evolution below Sn132 : First Measurement of Low-Lying β -Emitting Isomers in Ag123,125

Author

Chen, Z. Q., primary, Li, Z. H., additional, Hua, H., additional, Watanabe, H., additional, Yuan, C. X., additional, Zhang, S. Q., additional, Lorusso, G., additional, Nishimura, S., additional, Baba, H., additional, Browne, F., additional, Benzoni, G., additional, Chae, K. Y., additional, Crespi, F. C. L., additional, Doornenbal, P., additional, Fukuda, N., additional, Gey, G., additional, Gernhäuser, R., additional, Inabe, N., additional, Isobe, T., additional, Jiang, D. X., additional, Jungclaus, A., additional, Jung, H. S., additional, Jin, Y., additional, Kameda, D., additional, Kim, G. D., additional, Kim, Y. K., additional, Kojouharov, I., additional, Kondev, F. G., additional, Kubo, T., additional, Kurz, N., additional, Kwon, Y. K., additional, Li, X. Q., additional, Lou, J. L., additional, Lane, G. J., additional, Li, C. G., additional, Luo, D. W., additional, Montaner-Pizá, A., additional, Moschner, K., additional, Niu, C. Y., additional, Naqvi, F., additional, Niikura, M., additional, Nishibata, H., additional, Odahara, A., additional, Orlandi, R., additional, Patel, Z., additional, Podolyák, Zs., additional, Sumikama, T., additional, Söderström, P.-A., additional, Sakurai, H., additional, Schaffner, H., additional, Simpson, G. S., additional, Steiger, K., additional, Suzuki, H., additional, Taprogge, J., additional, Takeda, H., additional, Vajta, Zs., additional, Wang, H. K., additional, Wu, J., additional, Wendt, A., additional, Wang, C. G., additional, Wu, H. Y., additional, Wang, X., additional, Wu, C. G., additional, Xu, C., additional, Xu, Z. Y., additional, Yagi, A., additional, Ye, Y. L., additional, and Yoshinaga, K., additional

Published
2019
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4. Prominence of Pairing in Inclusive (p,2p) and (p,pn) Cross Sections from Neutron-Rich Nuclei

Author

Paul, N., primary, Obertelli, A., additional, Bertulani, C. A., additional, Corsi, A., additional, Doornenbal, P., additional, Rodriguez-Sanchez, J. L., additional, Authelet, G., additional, Baba, H., additional, Calvet, D., additional, Château, F., additional, Chen, S., additional, Delbart, A., additional, Gheller, J.-M., additional, Giganon, A., additional, Gillibert, A., additional, Isobe, T., additional, Lapoux, V., additional, Matsushita, M., additional, Momiyama, S., additional, Motobayashi, T., additional, Niikura, M., additional, Otsu, H., additional, Péron, C., additional, Peyaud, A., additional, Pollacco, E. C., additional, Roussé, J.-Y., additional, Sakurai, H., additional, Santamaria, C., additional, Sasano, M., additional, Shiga, Y., additional, Steppenbeck, D., additional, Takeuchi, S., additional, Taniuchi, R., additional, Uesaka, T., additional, Wang, H., additional, Yoneda, K., additional, Ando, T., additional, Arici, T., additional, Blazhev, A., additional, Browne, F., additional, Bruce, A. M., additional, Carroll, R., additional, Chung, L. X., additional, Cortés, M. L., additional, Dewald, M., additional, Ding, B., additional, Dombradi, Zs., additional, Flavigny, F., additional, Franchoo, S., additional, Giacoppo, F., additional, Górska, M., additional, Gottardo, A., additional, Hadynska-Klek, K., additional, Korkulu, Z., additional, Koyama, S., additional, Kubota, Y., additional, Jungclaus, A., additional, Lee, J., additional, Lettmann, M., additional, Linh, B. D., additional, Liu, J., additional, Liu, Z., additional, Lizarazo, C., additional, Louchart, C., additional, Lozeva, R., additional, Matsui, K., additional, Miyazaki, T., additional, Moschner, K., additional, Nagamine, S., additional, Nakatsuka, N., additional, Nita, C., additional, Nishimura, S., additional, Nobs, C. R., additional, Olivier, L., additional, Ota, S., additional, Patel, Z., additional, Podolyák, Zs., additional, Rudigier, M., additional, Sahin, E., additional, Saito, T. Y., additional, Shand, C., additional, Söderström, P.-A., additional, Stefan, I. G., additional, Sumikama, T., additional, Suzuki, D., additional, Orlandi, R., additional, Vaquero, V., additional, Vajta, Zs., additional, Werner, V., additional, Wimmer, K., additional, Wu, J., additional, and Xu, Z., additional

Published
2019
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5. Gamma Decay of Unbound Neutron-Hole States in Sn133

Author

Vaquero, V., primary, Jungclaus, A., additional, Doornenbal, P., additional, Wimmer, K., additional, Gargano, A., additional, Tostevin, J. A., additional, Chen, S., additional, Nácher, E., additional, Sahin, E., additional, Shiga, Y., additional, Steppenbeck, D., additional, Taniuchi, R., additional, Xu, Z. Y., additional, Ando, T., additional, Baba, H., additional, Garrote, F. L. Bello, additional, Franchoo, S., additional, Hadynska-Klek, K., additional, Kusoglu, A., additional, Liu, J., additional, Lokotko, T., additional, Momiyama, S., additional, Motobayashi, T., additional, Nagamine, S., additional, Nakatsuka, N., additional, Niikura, M., additional, Orlandi, R., additional, Saito, T., additional, Sakurai, H., additional, Söderström, P. A., additional, Tveten, G. M., additional, Vajta, Zs., additional, and Yalcinkaya, M., additional

Published
2017
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6. Observation of Anomalous Internal Pair Creation inBe8: A Possible Indication of a Light, Neutral Boson

Author

Krasznahorkay, A. J., primary, Csatlós, M., additional, Csige, L., additional, Gácsi, Z., additional, Gulyás, J., additional, Hunyadi, M., additional, Kuti, I., additional, Nyakó, B. M., additional, Stuhl, L., additional, Timár, J., additional, Tornyi, T. G., additional, Vajta, Zs., additional, Ketel, T. J., additional, and Krasznahorkay, A., additional

Published
2016
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7. Extension of theN=40Island of Inversion towardsN=50: Spectroscopy ofCr66,Fe70,72

Author

Santamaria, C., primary, Louchart, C., additional, Obertelli, A., additional, Werner, V., additional, Doornenbal, P., additional, Nowacki, F., additional, Authelet, G., additional, Baba, H., additional, Calvet, D., additional, Château, F., additional, Corsi, A., additional, Delbart, A., additional, Gheller, J.-M., additional, Gillibert, A., additional, Isobe, T., additional, Lapoux, V., additional, Matsushita, M., additional, Momiyama, S., additional, Motobayashi, T., additional, Niikura, M., additional, Otsu, H., additional, Péron, C., additional, Peyaud, A., additional, Pollacco, E. C., additional, Roussé, J.-Y., additional, Sakurai, H., additional, Sasano, M., additional, Shiga, Y., additional, Takeuchi, S., additional, Taniuchi, R., additional, Uesaka, T., additional, Wang, H., additional, Yoneda, K., additional, Browne, F., additional, Chung, L. X., additional, Dombradi, Zs., additional, Franchoo, S., additional, Giacoppo, F., additional, Gottardo, A., additional, Hadynska-Klek, K., additional, Korkulu, Z., additional, Koyama, S., additional, Kubota, Y., additional, Lee, J., additional, Lettmann, M., additional, Lozeva, R., additional, Matsui, K., additional, Miyazaki, T., additional, Nishimura, S., additional, Olivier, L., additional, Ota, S., additional, Patel, Z., additional, Pietralla, N., additional, Sahin, E., additional, Shand, C., additional, Söderström, P.-A., additional, Stefan, I., additional, Steppenbeck, D., additional, Sumikama, T., additional, Suzuki, D., additional, Vajta, Zs., additional, Wu, J., additional, and Xu, Z., additional

Published
2015
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8. β-Decay Half-Lives of 110 Neutron-Rich Nuclei across theN=82Shell Gap: Implications for the Mechanism and Universality of the AstrophysicalrProcess

Author

Lorusso, G., primary, Nishimura, S., additional, Xu, Z. Y., additional, Jungclaus, A., additional, Shimizu, Y., additional, Simpson, G. S., additional, Söderström, P.-A., additional, Watanabe, H., additional, Browne, F., additional, Doornenbal, P., additional, Gey, G., additional, Jung, H. S., additional, Meyer, B., additional, Sumikama, T., additional, Taprogge, J., additional, Vajta, Zs., additional, Wu, J., additional, Baba, H., additional, Benzoni, G., additional, Chae, K. Y., additional, Crespi, F. C. L., additional, Fukuda, N., additional, Gernhäuser, R., additional, Inabe, N., additional, Isobe, T., additional, Kajino, T., additional, Kameda, D., additional, Kim, G. D., additional, Kim, Y.-K., additional, Kojouharov, I., additional, Kondev, F. G., additional, Kubo, T., additional, Kurz, N., additional, Kwon, Y. K., additional, Lane, G. J., additional, Li, Z., additional, Montaner-Pizá, A., additional, Moschner, K., additional, Naqvi, F., additional, Niikura, M., additional, Nishibata, H., additional, Odahara, A., additional, Orlandi, R., additional, Patel, Z., additional, Podolyák, Zs., additional, Sakurai, H., additional, Schaffner, H., additional, Schury, P., additional, Shibagaki, S., additional, Steiger, K., additional, Suzuki, H., additional, Takeda, H., additional, Wendt, A., additional, Yagi, A., additional, and Yoshinaga, K., additional

Published
2015
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9. Isomer Decay Spectroscopy ofSm164andGd166: Midshell Collectivity AroundN=100

Author

Patel, Z., primary, Söderström, P.-A., additional, Podolyák, Zs., additional, Regan, P. H., additional, Walker, P. M., additional, Watanabe, H., additional, Ideguchi, E., additional, Simpson, G. S., additional, Liu, H. L., additional, Nishimura, S., additional, Wu, Q., additional, Xu, F. R., additional, Browne, F., additional, Doornenbal, P., additional, Lorusso, G., additional, Rice, S., additional, Sinclair, L., additional, Sumikama, T., additional, Wu, J., additional, Xu, Z. Y., additional, Aoi, N., additional, Baba, H., additional, Bello Garrote, F. L., additional, Benzoni, G., additional, Daido, R., additional, Fang, Y., additional, Fukuda, N., additional, Gey, G., additional, Go, S., additional, Gottardo, A., additional, Inabe, N., additional, Isobe, T., additional, Kameda, D., additional, Kobayashi, K., additional, Kobayashi, M., additional, Komatsubara, T., additional, Kojouharov, I., additional, Kubo, T., additional, Kurz, N., additional, Kuti, I., additional, Li, Z., additional, Matsushita, M., additional, Michimasa, S., additional, Moon, C.-B., additional, Nishibata, H., additional, Nishizuka, I., additional, Odahara, A., additional, Şahin, E., additional, Sakurai, H., additional, Schaffner, H., additional, Suzuki, H., additional, Takeda, H., additional, Tanaka, M., additional, Taprogge, J., additional, Vajta, Zs., additional, Yagi, A., additional, and Yokoyama, R., additional

Published
2014
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10. Monopole-Driven Shell Evolution below the Doubly Magic Nucleus Sn132 Explored with the Long-Lived Isomer in Pd126

Author

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

Published
2014
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11. Erratum:1p3/2Proton-Hole State inSn132and the Shell Structure AlongN=82[Phys. Rev. Lett. 112, 132501 (2014)]

Author

Taprogge, J., primary, Jungclaus, A., additional, Grawe, H., additional, Nishimura, S., additional, Doornenbal, P., additional, Lorusso, G., additional, Simpson, G. S., additional, Söderström, P.-A., additional, Sumikama, T., additional, Xu, Z. Y., additional, Baba, H., additional, Browne, F., additional, Fukuda, N., additional, Gernhäuser, R., additional, Gey, G., additional, Inabe, N., additional, Isobe, T., additional, Jung, H. S., additional, Kameda, D., additional, Kim, G. D., additional, Kim, Y.-K., additional, Kojouharov, I., additional, Kubo, T., additional, Kurz, N., additional, Kwon, Y. K., additional, Li, Z., additional, Sakurai, H., additional, Schaffner, H., additional, Steiger, K., additional, Suzuki, H., additional, Takeda, H., additional, Vajta, Zs., additional, Watanabe, H., additional, Wu, J., additional, Yagi, A., additional, Yoshinaga, K., additional, Benzoni, G., additional, Bönig, S., additional, Chae, K. Y., additional, Coraggio, L., additional, Covello, A., additional, Daugas, J.-M., additional, Drouet, F., additional, Gadea, A., additional, Gargano, A., additional, Ilieva, S., additional, Kondev, F. G., additional, Kröll, T., additional, Lane, G. J., additional, Montaner-Pizá, A., additional, Moschner, K., additional, Mücher, D., additional, Naqvi, F., additional, Niikura, M., additional, Nishibata, H., additional, Odahara, A., additional, Orlandi, R., additional, Patel, Z., additional, Podolyák, Zs., additional, and Wendt, A., additional

Published
2014
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12. β -Decay Half-Lives of Co76,77 , Ni79,80 , and Cu81 : Experimental Indication of a Doubly Magic Ni78

Author

Xu, Z. Y., primary, Nishimura, S., additional, Lorusso, G., additional, Browne, F., additional, Doornenbal, P., additional, Gey, G., additional, Jung, H.-S., additional, Li, Z., additional, Niikura, M., additional, Söderström, P.-A., additional, Sumikama, T., additional, Taprogge, J., additional, Vajta, Zs., additional, Watanabe, H., additional, Wu, J., additional, Yagi, A., additional, Yoshinaga, K., additional, Baba, H., additional, Franchoo, S., additional, Isobe, T., additional, John, P. R., additional, Kojouharov, I., additional, Kubono, S., additional, Kurz, N., additional, Matea, I., additional, Matsui, K., additional, Mengoni, D., additional, Morfouace, P., additional, Napoli, D. R., additional, Naqvi, F., additional, Nishibata, H., additional, Odahara, A., additional, Şahin, E., additional, Sakurai, H., additional, Schaffner, H., additional, Stefan, I. G., additional, Suzuki, D., additional, Taniuchi, R., additional, and Werner, V., additional

Published
2014
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13. 1p3/2Proton-Hole State inSn132and the Shell Structure AlongN=82

Author

Taprogge, J., primary, Jungclaus, A., additional, Grawe, H., additional, Nishimura, S., additional, Doornenbal, P., additional, Lorusso, G., additional, Simpson, G. S., additional, Söderström, P.-A., additional, Sumikama, T., additional, Xu, Z. Y., additional, Baba, H., additional, Browne, F., additional, Fukuda, N., additional, Gernhäuser, R., additional, Gey, G., additional, Inabe, N., additional, Isobe, T., additional, Jung, H. S., additional, Kameda, D., additional, Kim, G. D., additional, Kim, Y.-K., additional, Kojouharov, I., additional, Kubo, T., additional, Kurz, N., additional, Kwon, Y. K., additional, Li, Z., additional, Sakurai, H., additional, Schaffner, H., additional, Steiger, K., additional, Suzuki, H., additional, Takeda, H., additional, Vajta, Zs., additional, Watanabe, H., additional, Wu, J., additional, Yagi, A., additional, Yoshinaga, K., additional, Benzoni, G., additional, Bönig, S., additional, Chae, K. Y., additional, Coraggio, L., additional, Covello, A., additional, Daugas, J.-M., additional, Drouet, F., additional, Gadea, A., additional, Gargano, A., additional, Ilieva, S., additional, Kondev, F. G., additional, Kröll, T., additional, Lane, G. J., additional, Montaner-Pizá, A., additional, Moschner, K., additional, Mücher, D., additional, Naqvi, F., additional, Niikura, M., additional, Nishibata, H., additional, Odahara, A., additional, Orlandi, R., additional, Patel, Z., additional, Podolyák, Zs., additional, and Wendt, A., additional

Published
2014
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14. Isomers inPd128andPd126: Evidence for a Robust Shell Closure at the Neutron Magic Number 82 in Exotic Palladium Isotopes

Author

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

Published
2013
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15. Coulomb Excitation ofSn104and the Strength of theSn100Shell Closure

Author

Guastalla, G., primary, DiJulio, D. D., additional, Górska, M., additional, Cederkäll, J., additional, Boutachkov, P., additional, Golubev, P., additional, Pietri, S., additional, Grawe, H., additional, Nowacki, F., additional, Sieja, K., additional, Algora, A., additional, Ameil, F., additional, Arici, T., additional, Atac, A., additional, Bentley, M. A., additional, Blazhev, A., additional, Bloor, D., additional, Brambilla, S., additional, Braun, N., additional, Camera, F., additional, Dombrádi, Zs., additional, Domingo Pardo, C., additional, Estrade, A., additional, Farinon, F., additional, Gerl, J., additional, Goel, N., additional, Grȩbosz, J., additional, Habermann, T., additional, Hoischen, R., additional, Jansson, K., additional, Jolie, J., additional, Jungclaus, A., additional, Kojouharov, I., additional, Knoebel, R., additional, Kumar, R., additional, Kurcewicz, J., additional, Kurz, N., additional, Lalović, N., additional, Merchan, E., additional, Moschner, K., additional, Naqvi, F., additional, Nara Singh, B. S., additional, Nyberg, J., additional, Nociforo, C., additional, Obertelli, A., additional, Pfützner, M., additional, Pietralla, N., additional, Podolyák, Z., additional, Prochazka, A., additional, Ralet, D., additional, Reiter, P., additional, Rudolph, D., additional, Schaffner, H., additional, Schirru, F., additional, Scruton, L., additional, Sohler, D., additional, Swaleh, T., additional, Taprogge, J., additional, Vajta, Zs., additional, Wadsworth, R., additional, Warr, N., additional, Weick, H., additional, Wendt, A., additional, Wieland, O., additional, Winfield, J. S., additional, and Wollersheim, H. J., additional

Published
2013
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16. β-Decay Half-Lives of 110 Neutron-Rich Nuclei across the N = 82 Shell Gap: Implications for the Mechanism and Universality of the Astrophysical r Process.

Author

Lorusso, G., Nishimura, S., Xu, Z. Y., Jungclaus, A., Shimizu, Y., Simpson, G. S., Söderström, P.-A., Watanabe, H., Browne, F., Doornenbal, P., Gey, G., Jung, H. S., Meyer, B., Sumikama, T., Taprogge, J., Vajta, Zs., Wu, J., Baba, H., Benzoni, G., and Chae, K. Y.

Subjects
*NEUTRONS, *FINITE nuclei, *ASTROPHYSICAL electric fields, *RARE earth metals, *EQUILIBRIUM
Abstract

The β-decay half-lives of 110 neutron-rich isotopes of the elements from Rb37 to Sn50 were measured at the Radioactive Isotope Beam Factory. The 40 new half-lives follow robust systematics and highlight the persistence of shell effects. The new data have direct implications for r-process calculations and reinforce the notion that the second (A≈130) and the rare-earth-element (A≈160) abundance peaks may result from the freeze-out of an (n,γ)⇄(γ,n) equilibrium. In such an equilibrium, the new half-lives are important factors determining the abundance of rare-earth elements, and allow for a more reliable discussion of the r process universality. It is anticipated that universality may not extend to the elements Sn, Sb, I, and Cs, making the detection of these elements in metal-poor stars of the utmost importance to determine the exact conditions of individual r-process events. [ABSTRACT FROM AUTHOR]

Published
2015
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17. Monopole-Driven Shell Evolution below the Doubly Magic Nucleus 132Sn Explored with the Long-Lived Isomer in 126Pd.

Author

Watanabe, H., Lorusso, G., Nishimura, S., Otsuka, T., Ogawa, K., Xu, Z. Y., Sumikama, T., Söderström, P.-A., Doornenbal, P., Li, Z., Browne, F., Gey, G., Jung, H. S., Taprogge, J., Vajta, Zs., Wu, J., Yagi, A., Baba, H., Benzoni, G., and Chae, K. Y.

Subjects
*MOLECULAR structure of isomers, *NEUTRON optics, *ELECTRIC octupole moments, *NEUTRON spin, *NEUTRON temperature
Abstract

A new isomer with a half-life of 23.0(8) ms has been identified at 2406 keV in 126Pd and is proposed to have a spin and parity of 10+ with a maximally aligned configuration comprising two neutron holes in the 1h11/2 orbit. In addition to an internal-decay branch through a hindered electric octupole transition, β decay from the long-lived isomer was observed to populate excited states at high spins in 126Ag. The smaller energy difference between the 10+ and 7- isomers in 126Pd than in the heavier N=80 isotones can be interpreted as being ascribed to the monopole shift of the 1h11/2 neutron orbit. The effects of the monopole interaction on the evolution of single-neutron energies below 132Sn are discussed in terms of the central and tensor forces. [ABSTRACT FROM AUTHOR]

Published
2014
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18. β-Decay Half-Lives of 76,77Co, 79,80Ni, and 81Cu: Experimental Indication of a Doubly Magic 78Ni.

Author

Xu, Z. Y., Nishimura, S., Lorusso, G., Browne, F., Doomenbal, P., Gey, G., Jung, H. -S., Li, Z., Niikura, M., Soderstrom, P. -A., Sumikama, T., Taprogge, J., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Baba, H., Franchoo, S., and Isobe, T.

Subjects
*NEUTRONS, *ATOMIC number, *NEUTRON number, *ION beams, *BAND gaps
Abstract

The half-lives of 20 neutron-rich nuclei with Z = 27-30 have been measured at the RIBF, including five new half-lives of 76Co(21.7+6.5 -4.9 ms), 77Co(13.0++7.2 -4.3 ms), 79Ni(43.0+8.6 -7.5 ms), 80Ni(23.9++26.0 -17.2 ms), and 81Cu(73.2 ± 6.8 ms). In addition, the half-lives of 73-75Co, 74-78Ni, 78-80Cu, and 80-82Zn were determined with higher precision than previous works. Based on these new results, a systematic study of the β-decay half-lives has been carried out, which suggests a sizable magicity for both the proton number Z = 28 and the neutron number N = 50 in 78Ni. [ABSTRACT FROM AUTHOR]

Published
2014
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19. Observation of Anomalous Internal Pair Creation in 8Be: A Possible Indication of a Light, Neutral Boson.

Author

Krasznahorkay, A. J., Csatlós, M., Csige, L., Gácsi, Z., Gulyás, J., Hunyadi, M., Kuti, I., Nyakó, B. M., Stuhl, L., Timár, J., Tornyi, T. G., Vajta, Zs., Ketel, T. J., and Krasznahorkay, A.

Subjects
*BERYLLIUM isotopes, *BOSONS, *PAIR production
Abstract

Electron-positron angular correlations were measured for the isovector magnetic dipole 17.6 MeV (Jπ = 1+, T = 1) state → ground state (Jπ = 0+, T = 0) and the isoscalar magnetic dipole 18.15 MeV (Jπ = 1+, T = 0) state → ground state transitions in 8Be. Significant enhancement relative to the internal pair creation was observed at large angles in the angular correlation for the isoscalar transition with a confidence level of > 5σ. This observation could possibly be due to nuclear reaction interference effects or might indicate that, in an intermediate step, a neutral isoscalar particle with a mass of 16.70 ± 0.35(stat) ± 0.5(syst) MeV/c² and Jπ = 1+ was created. [ABSTRACT FROM AUTHOR]

Published
2016
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20. Excited-State Half-Lives in ^{130}Cd and the Isospin Dependence of Effective Charges.

Author

Jungclaus A, Górska M, Mikołajczuk M, Acosta J, Taprogge J, Nishimura S, Doornenbal P, Lorusso G, Simpson GS, Söderström PA, Sumikama T, Xu Z, Kumar P, Martínez-Pinedo G, Nowacki F, Van Isacker P, Baba H, Browne F, Fukuda N, Gernhäuser R, Gey G, Inabe N, Isobe T, Jung HS, Kameda D, Kim GD, Kim YK, Kojouharov I, Kubo T, Kurz N, Kwon YK, Li Z, Sakurai H, Schaffner H, Shimizu Y, Steiger K, Suzuki H, Takeda H, Vajta Z, Watanabe H, Wu J, Yagi A, Yoshinaga K, Benzoni G, Bönig S, Chae KY, Daugas JM, Drouet F, Gadea A, Ilieva S, Kondev FG, Kröll T, Lane GJ, Montaner-Pizá A, Moschner K, Naqvi F, Niikura M, Nishibata H, Odahara A, Orlandi R, Patel Z, Podolyák Z, and Wendt A

Abstract

The known I^{π}=8_{1}^{+}, E_{x}=2129-keV isomer in the semimagic nucleus ^{130}Cd_{82} was populated in the projectile fission of a ^{238}U beam at the Radioactive Isotope Beam Factory at RIKEN. The high counting statistics of the accumulated data allowed us to determine the excitation energy, E_{x}=2001.2(7)  keV, and half-life, T_{1/2}=57(3)  ns, of the I^{π}=6_{1}^{+} state based on γγ coincidence information. Furthermore, the half-life of the 8_{1}^{+} state, T_{1/2}=224(4)  ns, was remeasured with high precision. The new experimental information, combined with available data for ^{134}Sn and large-scale shell model calculations, allowed us to extract proton and neutron effective charges for ^{132}Sn, a doubly magic nucleus far-off stability. A comparison to analogous information for ^{100}Sn provides first reliable information regarding the isospin dependence of the isoscalar and isovector effective charges in heavy nuclei.

Published
2024
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21. Gamma Decay of Unbound Neutron-Hole States in ^{133}Sn.

Author

Vaquero V, Jungclaus A, Doornenbal P, Wimmer K, Gargano A, Tostevin JA, Chen S, Nácher E, Sahin E, Shiga Y, Steppenbeck D, Taniuchi R, Xu ZY, Ando T, Baba H, Garrote FLB, Franchoo S, Hadynska-Klek K, Kusoglu A, Liu J, Lokotko T, Momiyama S, Motobayashi T, Nagamine S, Nakatsuka N, Niikura M, Orlandi R, Saito T, Sakurai H, Söderström PA, Tveten GM, Vajta Z, and Yalcinkaya M

Abstract

Excited states in the nucleus ^{133}Sn, with one neutron outside the double magic ^{132}Sn core, were populated following one-neutron knockout from a ^{134}Sn beam on a carbon target at relativistic energies at the Radioactive Isotope Beam Factory at RIKEN. Besides the γ rays emitted in the decay of the known neutron single-particle states in ^{133}Sn additional γ strength in the energy range 3.5-5.5 MeV was observed for the first time. Since the neutron-separation energy of ^{133}Sn is low, S_{n}=2.402(4)  MeV, this observation provides direct evidence for the radiative decay of neutron-unbound states in this nucleus. The ability of electromagnetic decay to compete successfully with neutron emission at energies as high as 3 MeV above threshold is attributed to a mismatch between the wave functions of the initial and final states in the latter case. These findings suggest that in the region southeast of ^{132}Sn nuclear structure effects may play a significant role in the neutron versus γ competition in the decay of unbound states. As a consequence, the common neglect of such effects in the evaluation of the neutron-emission probabilities in calculations of global β-decay properties for astrophysical simulations may have to be reconsidered.

Published
2017
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22. Observation of Anomalous Internal Pair Creation in ^{8}Be: A Possible Indication of a Light, Neutral Boson.

Author

Krasznahorkay AJ, Csatlós M, Csige L, Gácsi Z, Gulyás J, Hunyadi M, Kuti I, Nyakó BM, Stuhl L, Timár J, Tornyi TG, Vajta Z, Ketel TJ, and Krasznahorkay A

Abstract

Electron-positron angular correlations were measured for the isovector magnetic dipole 17.6 MeV (J^{π}=1^{+}, T=1) state→ground state (J^{π}=0^{+}, T=0) and the isoscalar magnetic dipole 18.15 MeV (J^{π}=1^{+}, T=0) state→ground state transitions in ^{8}Be. Significant enhancement relative to the internal pair creation was observed at large angles in the angular correlation for the isoscalar transition with a confidence level of >5σ. This observation could possibly be due to nuclear reaction interference effects or might indicate that, in an intermediate step, a neutral isoscalar particle with a mass of 16.70±0.35(stat)±0.5(syst)  MeV/c^{2} and J^{π}=1^{+} was created.

Published
2016
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23. Extension of the N=40 Island of Inversion towards N=50: Spectroscopy of (66)Cr, (70,72)Fe.

Author

Santamaria C, Louchart C, Obertelli A, Werner V, Doornenbal P, Nowacki F, Authelet G, Baba H, Calvet D, Château F, Corsi A, Delbart A, Gheller JM, Gillibert A, Isobe T, Lapoux V, Matsushita M, Momiyama S, Motobayashi T, Niikura M, Otsu H, Péron C, Peyaud A, Pollacco EC, Roussé JY, Sakurai H, Sasano M, Shiga Y, Takeuchi S, Taniuchi R, Uesaka T, Wang H, Yoneda K, Browne F, Chung LX, Dombradi Z, Franchoo S, Giacoppo F, Gottardo A, Hadynska-Klek K, Korkulu Z, Koyama S, Kubota Y, Lee J, Lettmann M, Lozeva R, Matsui K, Miyazaki T, Nishimura S, Olivier L, Ota S, Patel Z, Pietralla N, Sahin E, Shand C, Söderström PA, Stefan I, Steppenbeck D, Sumikama T, Suzuki D, Vajta Z, Wu J, and Xu Z

Abstract

We report on the measurement of the first 2(+) and 4(+) states of (66)Cr and (70,72)Fe via in-beam γ-ray spectroscopy. The nuclei of interest were produced by (p,2p) reactions at incident energies of 260  MeV/nucleon. The experiment was performed at the Radioactive Isotope Beam Factory, RIKEN, using the DALI 2γ-ray detector array and the novel MINOS device, a thick liquid hydrogen target combined with a vertex tracker. A low-energy plateau of 2(1)(+) and 4(1)(+) energies as a function of the neutron number was observed for N≥38 and N≥40 for even-even Cr and Fe isotopes, respectively. State-of-the-art shell model calculations with a modified Lenzi-Nowacki-Poves-Sieja (LNPS) interaction in the pfg(9/2)d(5/2) valence space reproduce the observations. Interpretation within the shell model shows an extension of the island of inversion at N=40 for more neutron-rich isotopes towards N=50.

Published
2015
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24. Isomer decay spectroscopy of 164Sm and 166Gd: midshell collectivity around N=100.

Author

Patel Z, Söderström PA, Podolyák Z, Regan PH, Walker PM, Watanabe H, Ideguchi E, Simpson GS, Liu HL, Nishimura S, Wu Q, Xu FR, Browne F, Doornenbal P, Lorusso G, Rice S, Sinclair L, Sumikama T, Wu J, Xu ZY, Aoi N, Baba H, Bello Garrote FL, Benzoni G, Daido R, Fang Y, Fukuda N, Gey G, Go S, Gottardo A, Inabe N, Isobe T, Kameda D, Kobayashi K, Kobayashi M, Komatsubara T, Kojouharov I, Kubo T, Kurz N, Kuti I, Li Z, Matsushita M, Michimasa S, Moon CB, Nishibata H, Nishizuka I, Odahara A, Şahin E, Sakurai H, Schaffner H, Suzuki H, Takeda H, Tanaka M, Taprogge J, Vajta Z, Yagi A, and Yokoyama R

Abstract

Excited states in the N=102 isotones 166Gd and 164Sm have been observed following isomeric decay for the first time at RIBF, RIKEN. The half-lives of the isomeric states have been measured to be 950(60) and 600(140) ns for 166Gd and 164Sm, respectively. Based on the decay patterns and potential energy surface calculations, including β6 deformation, a spin and parity of 6- has been assigned to the isomeric states in both nuclei. Collective observables are discussed in light of the systematics of the region, giving insight into nuclear shape evolution. The decrease in the ground-band energies of 166Gd and 164Sm (N=102) compared to 164Gd and 162Sm (N=100), respectively, presents evidence for the predicted deformed shell closure at N=100.

Published
2014
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25. Monopole-driven shell evolution below the doubly magic nucleus 132Sn explored with the long-lived isomer in 126Pd.

Author

Watanabe H, Lorusso G, Nishimura S, Otsuka T, Ogawa K, Xu ZY, Sumikama T, Söderström PA, Doornenbal P, Li Z, Browne F, Gey G, Jung HS, Taprogge J, Vajta Z, Wu J, Yagi A, Baba H, Benzoni G, Chae KY, Crespi FC, Fukuda N, Gernhäuser R, Inabe N, Isobe T, Jungclaus A, Kameda D, Kim GD, Kim YK, Kojouharov I, Kondev FG, Kubo T, Kurz N, Kwon YK, Lane GJ, Moon CB, Montaner-Pizá A, Moschner K, Naqvi F, Niikura M, Nishibata H, Nishimura D, Odahara A, Orlandi R, Patel Z, Podolyák Z, Sakurai H, Schaffner H, Simpson GS, Steiger K, Suzuki H, Takeda H, Wendt A, and Yoshinaga K

Abstract

A new isomer with a half-life of 23.0(8) ms has been identified at 2406 keV in (126)Pd and is proposed to have a spin and parity of 10(+) with a maximally aligned configuration comprising two neutron holes in the 1h(11/2) orbit. In addition to an internal-decay branch through a hindered electric octupole transition, β decay from the long-lived isomer was observed to populate excited states at high spins in (126)Ag. The smaller energy difference between the 10(+) and 7(-) isomers in (126)Pd than in the heavier N=80 isotones can be interpreted as being ascribed to the monopole shift of the 1h(11/2) neutron orbit. The effects of the monopole interaction on the evolution of single-neutron energies below (132)Sn are discussed in terms of the central and tensor forces.

Published
2014
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26. β-Decay half-lives of 76,77Co, 79,80Ni, and 81Cu: experimental indication of a doubly magic 78Ni.

Author

Xu ZY, Nishimura S, Lorusso G, Browne F, Doornenbal P, Gey G, Jung HS, Li Z, Niikura M, Söderström PA, Sumikama T, Taprogge J, Vajta Z, Watanabe H, Wu J, Yagi A, Yoshinaga K, Baba H, Franchoo S, Isobe T, John PR, Kojouharov I, Kubono S, Kurz N, Matea I, Matsui K, Mengoni D, Morfouace P, Napoli DR, Naqvi F, Nishibata H, Odahara A, Sahin E, Sakurai H, Schaffner H, Stefan IG, Suzuki D, Taniuchi R, and Werner V

Abstract

The half-lives of 20 neutron-rich nuclei with Z=27-30 have been measured at the RIBF, including five new half-lives of (76)Co(21.7(-4.9)(+6.5) ms), (77)Co(13.0(-4.3)(+7.2) ms), (79)Ni(43.0(-7.5)(+8.6) ms), (80)Ni(23.9(-17.2)(+26.0) ms), and (81)Cu(73.2 ± 6.8 ms). In addition, the half-lives of (73-75)Co, (74-78)Ni, (78-80)Cu, and (80-82)Zn were determined with higher precision than previous works. Based on these new results, a systematic study of the β-decay half-lives has been carried out, which suggests a sizable magicity for both the proton number Z = 28 and the neutron number N=50 in (78)Ni.

Published
2014
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27. 1p3/2 proton-hole state in 132Sn and the shell structure along N = 82.

Author

Taprogge J, Jungclaus A, Grawe H, Nishimura S, Doornenbal P, Lorusso G, Simpson GS, Söderström PA, Sumikama T, Xu ZY, Baba H, Browne F, Fukuda N, Gernhäuser R, Gey G, Inabe N, Isobe T, Jung HS, Kameda D, Kim GD, Kim YK, Kojouharov I, Kubo T, Kurz N, Kwon YK, Li Z, Sakurai H, Schaffner H, Steiger K, Suzuki H, Takeda H, Vajta Z, Watanabe H, Wu J, Yagi A, Yoshinaga K, Benzoni G, Bönig S, Chae KY, Coraggio L, Covello A, Daugas JM, Drouet F, Gadea A, Gargano A, Ilieva S, Kondev FG, Kröll T, Lane GJ, Montaner-Pizá A, Moschner K, Mücher D, Naqvi F, Niikura M, Nishibata H, Odahara A, Orlandi R, Patel Z, Podolyák Z, and Wendt A

Abstract

A low-lying state in 131In82, the one-proton hole nucleus with respect to double magic 132Sn, was observed by its γ decay to the Iπ=1/2- β-emitting isomer. We identify the new state at an excitation energy of Ex=1353  keV, which was populated both in the β decay of 131Cd83 and after β-delayed neutron emission from 132Cd84, as the previously unknown πp3/2 single-hole state with respect to the 132Sn core. Exploiting this crucial new experimental information, shell-model calculations were performed to study the structure of experimentally inaccessible N=82 isotones below 132Sn. The results evidence a surprising absence of proton subshell closures along the chain of N=82 isotones. The consequences of this finding for the evolution of the N=82 shell gap along the r-process path are discussed.

Published
2014
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28. Isomers in 128Pd and 126Pd: evidence for a robust shell closure at the neutron magic number 82 in exotic palladium isotopes.

Author

Watanabe H, Lorusso G, Nishimura S, Xu ZY, Sumikama T, Söderström PA, Doornenbal P, Browne F, Gey G, Jung HS, Taprogge J, Vajta Z, Wu J, Yagi A, Baba H, Benzoni G, Chae KY, Crespi FC, Fukuda N, Gernhäuser R, Inabe N, Isobe T, Jungclaus A, Kameda D, Kim GD, Kim YK, Kojouharov I, Kondev FG, Kubo T, Kurz N, Kwon YK, Lane GJ, Li Z, Moon CB, Montaner-Pizá A, Moschner K, Naqvi F, Niikura M, Nishibata H, Nishimura D, Odahara A, Orlandi R, Patel Z, Podolyák Z, Sakurai H, Schaffner H, Simpson GS, Steiger K, Suzuki H, Takeda H, Wendt A, and Yoshinaga K

Abstract

The level structures of the very neutron-rich nuclei 128Pd and 126Pd have been investigated for the first time. In the r-process waiting-point nucleus 128Pd, a new isomer with a half-life of 5.8(8) μs is proposed to have a spin and parity of 8(+) and is associated with a maximally aligned configuration arising from the g(9/2) proton subshell with seniority υ=2. For 126Pd, two new isomers have been identified with half-lives of 0.33(4) and 0.44(3) μs. The yrast 2(+) energy is much higher in 128Pd than in 126Pd, while the level sequence below the 8(+) isomer in 128Pd is similar to that in the N=82 isotone 130Cd. The electric quadrupole transition that depopulates the 8(+) isomer in 128Pd is more hindered than the corresponding transition in 130Cd, as expected in the seniority scheme for a semimagic, spherical nucleus. These experimental findings indicate that the shell closure at the neutron number N=82 is fairly robust in the neutron-rich Pd isotopes.

Published
2013
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29. Coulomb excitation of 104Sn and the strength of the 100Sn shell closure.

Author

Guastalla G, DiJulio DD, Górska M, Cederkäll J, Boutachkov P, Golubev P, Pietri S, Grawe H, Nowacki F, Sieja K, Algora A, Ameil F, Arici T, Atac A, Bentley MA, Blazhev A, Bloor D, Brambilla S, Braun N, Camera F, Dombrádi Z, Domingo Pardo C, Estrade A, Farinon F, Gerl J, Goel N, Grȩbosz J, Habermann T, Hoischen R, Jansson K, Jolie J, Jungclaus A, Kojouharov I, Knoebel R, Kumar R, Kurcewicz J, Kurz N, Lalović N, Merchan E, Moschner K, Naqvi F, Nara Singh BS, Nyberg J, Nociforo C, Obertelli A, Pfützner M, Pietralla N, Podolyák Z, Prochazka A, Ralet D, Reiter P, Rudolph D, Schaffner H, Schirru F, Scruton L, Sohler D, Swaleh T, Taprogge J, Vajta Z, Wadsworth R, Warr N, Weick H, Wendt A, Wieland O, Winfield JS, and Wollersheim HJ

Abstract

A measurement of the reduced transition probability for the excitation of the ground state to the first 2+ state in 104Sn has been performed using relativistic Coulomb excitation at GSI. 104Sn is the lightest isotope in the Sn chain for which this quantity has been measured. The result is a key point in the discussion of the evolution of nuclear structure in the proximity of the doubly magic nucleus 100Sn. The value B(E2; 0+ → 2+) = 0.10(4) e2b2 is significantly lower than earlier results for 106Sn and heavier isotopes. The result is well reproduced by shell model predictions and therefore indicates a robust N = Z = 50 shell closure.

Published
2013
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