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1.

001-es BibID:BIBFORM065175
035-os BibID:(Scopus)84959506962 (WoS)000370799800005 (cikkazonosító)024320
Első szerző:Shiga, Yoshiaki
Cím:Investigating nuclear shell structure in the vicinity of 78Ni: Low-lying excited states in the neutron-rich isotopes 80,82Zn / Y. Shiga, K. Yoneda, D. Steppenbeck, N. Aoi, P. Doornenbal, J. Lee, H. Liu, M. Matsushita, S. Takeuchi, H. Wang, H. Baba, P. Bednarczyk, Zs. Dombradi, Zs. Fulop, S. Go, T. Hashimoto, M. Honma, E. Ideguchi, K. Ieki, K. Kobayashi, Y. Kondo, R. Minakata, T. Motobayashi, D. Nishimura, T. Otsuka, H. Otsu, H. Sakurai, N. Shimizu, D. Sohler, Y. Sun, A. Tamii, R. Tanaka, Z. Tian, Y. Tsunoda, Zs. Vajta, T. Yamamoto, X. Yang, Z. Yang, Y. Ye, R. Yokoyama, J. Zenihiro
Dátum:2016
ISSN:2469-9985 0556-2813 2469-9993
Megjegyzések:The low-lying level structures of nuclei in the vicinity of 78Ni were investigated using in-beam ?-ray spectroscopy to clarify the nature of the nuclear magic numbers Z=28 and N=50 in systems close to the neutron drip line. Nucleon knockout reactions were employed to populate excited states in 80Zn and 82Zn. A candidate for the 4+1 level in 80Zn was identified at 1979(30) keV, and the lifetime of this state was estimated to be 136+92?67 ps from a line-shape analysis. Moreover, the energy of the 2+1 state in 82Zn is reported to lie at 621(11) keV. The large drop in the 2+1 energy at 82Zn indicates the presence of a significant peak in the E(2+1) systematics at N=50. Furthermore, the E(4+1)/E(2+1) and B(E2;4+1?2+1)/B(E2;2+1?0+g.s.) ratios in 80Zn were deduced to be 1.32(3) and 1.12+80?60, respectively. These results imply that 80Zn can be described in terms of two-proton configurations with a 78Ni core and are consistent with a robust N=50 magic number along the Zn isotopic chain. These observations, therefore, indicate a persistent N=50 shell closure in nuclei far from the line of ? stability, which in turn suggests a doubly magic structure for 78Ni.
Tárgyszavak:Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Physical Review C. - 93 : 2 (2016), p. 1-6. -
További szerzők:Yoneda, K. Steppenbeck, David Aoi, Nori Doornenbal, Pieter Lee, J. Liu, H. Matsushita, Masafumi Takeuchi, Satoshi Wang, H. Baba, H. Bednarczyk, Piotr Dombrádi Zsolt Fülöp Zs. Go, Shintaro Hashimoto, Takashi Honma, M. Ideguchi, Eiji Ieki, Kazuo Kobayashi, K. Kondo, Yosuke Minakata, Ryogo Motobayashi, Tohru Nishimura, Daiki Otsuka, T. Otsu, Hideaki Sakurai, H. Shimizu, N. Sohler Dóra Sun, Y. Tamii, Atsushi Tanaka, Ryuki Tian, Z. Tsunoda, Y. Vajta Zsolt (1985-) (informatikus fizikus) Yamamoto, Tetsuya Yang, X. Yang, Z. Ye, Y. Yokoyama, Rin Zenihiro, Juzo
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2.

001-es BibID:BIBFORM065119
Első szerző:Wang, He
Cím:Collectivity in the neutron-rich Pd isotopes towards N=82 / He Wang, Nori Aoi, Satoshi Takeuchi, Masafumi Matsushita, Pieter Doornenbal, Tohru Motobayashi, David Steppenbeck, Kenichiro Yoneda, Hidetada Baba, Lucia Cáceres, Zsolt Dombrádi, Yosuke Kondo, Jenny Lee, Kuo-ang Li, Hong-Na Liu, Ryogo Minakata, Daiki Nishimura, Hideaki Otsu, Satoshi Sakaguchi, Hiroyoshi Sakurai, Heiko Scheit, Dora Sohler, Ye-Lei Sun, Zheng-Yang Tian, Ryuki Tanaka, Yasuhiro Togano, Zsolt Vajta, Zai-Hong Yang, Tetsuya Yamamoto, Yan-Lin Ye, Rin Yokoyama
Dátum:2015
Megjegyzések:The collectivity evolution in the neutron-rich 122,124,126Pd isotopes have been investigated via in-beam ?-ray spectroscopy at the RIKEN Radioactive Isotope Beam Factory. The first 2+ states in the three isotopes were identified. In addition, candidates for the first 4+ states were observed in 122Pd and 124Pd. The results show an increasing trend of 2+ excitation energies and a reduction of Ex(4+1)/Ex(2+1) ratios in the Pd isotopes towards N = 82. The Ex(2+1) and Ex(4+1) systematics are discussed by comparison with the Xe (Z = 54) isotopes and theoretical predictions by the proton-neutron interacting boson model. The data suggest the magic nature of N = 82 in the Pd isotopic chain.
Tárgyszavak:Természettudományok Fizikai tudományok konferenciacikk
Megjelenés:JPS Conference Proceedings. - 6 (2015), p. 030010-1 - 030010-5. -
További szerzők:Aoi, Nori Takeuchi, Satoshi Matsushita, Masafumi Doornenbal, Pieter Motobayashi, Tohru Steppenbeck, David Yoneda, Ken-ichiro Baba, Hidetada Cáceres, Lucia Dombrádi Zsolt Kondo, Yosuke Lee, Jenny Li, Kuo-ang Liu, Hongna Minakata, Ryogo Nishimura, Daiki Otsu, Hideaki Sakaguchi, Satoshi Sakurai, Hiroyoshi Scheit, Heiko Sohler Dóra Sun, Yelei Tian, Zhengyang Tanaka, Ryuki Togano, Yasuhiro Vajta Zsolt (1985-) (informatikus fizikus) Yang, Zaihong Yamamoto, Tetsuya Ye, Yanlin Yokoyama, Rin
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3.

001-es BibID:BIBFORM059668
035-os BibID:(Scopus)84898401709 (WoS)000332336600010
Első szerző:Wang, He
Cím:Structure of 136Sn and the Z = 50 magicity / He Wang, Nori Aoi, Satoshi Takeuchi, Masafumi Matsushita, Pieter Doornenbal, Tohru Motobayashi, David Steppenbeck, Kenichiro Yoneda, Hidetada Baba, Zsolt Dombrádi, Kota Kobayashi, Yosuke Kondo, Jenny Lee, Hong-Na Liu, Ryogo Minakata, Daiki Nishimura, Hideaki Otsu, Hiroyoshi Sakurai, Dora Sohler, Ye-Lei Sun, Zheng-Yang Tian, Ryuki Tanaka, Zsolt Vajta, Zai-Hong Yang, Tetsuya Yamamoto, Yan-Lin Ye, Rin Yokoyama
Dátum:2014
ISSN:2050-3911
Megjegyzések:The first 2+ excited state in the neutron-rich tin isotope 136Sn has been identified at 682(13)?keV by measuring ?-rays in coincidence with the one proton removal channel from 137Sb. This value is higher than those known for heavier even?even N=86 isotones, indicating the Z=50 shell closure. It compares well to the first 2+ excited state of the lighter tin isotope 134Sn, which may suggest that the seniority scheme also holds for 136Sn. Our result confirms the trend of lower 2+ excitation energies of even?even tin isotopes beyond N=82 compared to the known values in between the two doubly magic nuclei 100Sn and 132Sn.
Tárgyszavak:Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Progress of Theoretical and Experimental Physics. - 2014 : 2 (2014), p. 023D02-1-023D02-7. -
További szerzők:Aoi, Nori Takeuchi, Satoshi Matsushita, Masafumi Doornenbal, Pieter Motobayashi, Tohru Steppenbeck, David Yoneda, Ken-ichiro Baba, Hidetada Dombrádi Zsolt Kobayashi, Kota Kondo, Yosuke Lee, Jenny Liu, Hongna Minakata, Ryogo Nishimura, Daiki Otsu, Hideaki Sakurai, Hiroyoshi Sohler Dóra Sun, Yelei Tian, Zhengyang Tanaka, Ryuki Vajta Zsolt (1985-) (informatikus fizikus) Yang, Zaihong Yamamoto, Tetsuya Ye, Yanlin Yokoyama, Rin
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4.

001-es BibID:BIBFORM059288
035-os BibID:(Scopus)84888389131 (WoS)000327208200002
Első szerző:Wang, H.
Cím:Collectivity evolution in the neutron-rich Pd isotopes toward the N=82 shell closure / H. Wang, N. Aoi, S. Takeuchi, M. Matsushita, P. Doornenbal, T. Motobayashi, D. Steppenbeck, K. Yoneda, H. Baba, L. Caceres, Zs. Dombradi, K. Kobayashi, Y. Kondo, J. Lee, K. Li, H. Liu, R. Minakata, D. Nishimura, H. Otsu, S. Sakaguchi, H. Sakurai, H. Scheit, D. Sohler, Y. Sun, Z. Tian, R. Tanaka, Y. Togano, Zs. Vajta, Z. Yang, T. Yamamoto, Y. Ye, R. Yokoyama
Dátum:2013
ISSN:0556-2813 1089-490X
Megjegyzések:The neutron-rich, even-even 122,124,126Pd isotopes were studied via in-beam ?-ray spectroscopy at the RIKEN Radioactive Isotope Beam Factory. Excited states at 499(9), 590(11), and 686(17) keV were found in the three isotopes, which we assign to the respective 2+1?0+gs decays. In addition, candidates for the 4+1 states at 1164(20) and 1300(22) keV were observed in 122Pd and 124Pd, respectively. The resulting Ex(2+1) systematics are similar to the Xe (Z=54) isotopic chain and theoretical predictions by the proton-neutron interacting boson model (IBM-2), indicating the magic nature of N=82 in the Pd isotopes.
Tárgyszavak:Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
atommagfizika
Megjelenés:Physical Review C 88 : 5 (2013), p. 054318-1 - 054318-5. -
További szerzők:Aoi, Nori Takeuchi, Satoshi Matsushita, Masafumi Doornenbal, Pieter Motobayashi, Tohru Steppenbeck, David Yoneda, K. Baba, H. Cáceres, Lucia Dombrádi Zsolt Kobayashi, K. Kondo, Yosuke Lee, J. Li, Katherine Liu, H. Minakata, Ryogo Nishimura, Daiki Otsu, Hideaki Sakaguchi, Satoshi Sakurai, H. Scheit, Heiko Sohler Dóra Sun, Y. Tian, Z. Tanaka, Ryuki Togano, Yasuhiro Vajta Zsolt (1985-) (informatikus fizikus) Yang, Zaihong Yamamoto, Tetsuya Ye, Y. Yokoyama, Rin
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5.

001-es BibID:BIBFORM059666
035-os BibID:(Scopus)84905037592 (WoS)000341261100004
Első szerző:Watanabe, Hiroshi
Cím:Monopole-driven shell evolution below the doubly magic nucleus 132Sn explored with the long-lived isomer in 126Pd / H. Watanabe, G. Lorusso, S. Nishimura, T. Otsuka, K. Ogawa, Z. Y. Xu, T. Sumikama, P.-A. Söderström, P. Doornenbal, Z. Li, F. Browne, G. Gey, H. S. Jung, J. Taprogge, Zs. Vajta, J. Wu, A. Yagi, H. Baba, G. Benzoni, K. Y. Chae, F. C. L. Crespi, N. Fukuda, R. Gernhäuser, N. Inabe, T. Isobe, A. Jungclaus, D. Kameda, G. D. Kim, Y. K. Kim, I. Kojouharov, F. G. Kondev, T. Kubo, N. Kurz, Y. K. Kwon, G. J. Lane, C.-B. Moon, A. Montaner-Pizá, K. Moschner, F. Naqvi, M. Niikura, H. Nishibata, D. Nishimura, A. Odahara, R. Orlandi, Z. Patel, Zs. Podolyák, H. Sakurai, H. Schaffner, G. S. Simpson, K. Steiger, H. Suzuki, H. Takeda, A. Wendt, K. Yoshinaga
Dátum:2014
ISSN:0031-9007
Megjegyzések: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, ? 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 aschttp://hdl.handle.net/2437/215444ribed 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.
Tárgyszavak:Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Physical Review Letters 113 : 4 (2014), p. 042502-1-042502-6. -
További szerzők:Lorusso, Giuseppe Nishimura, Shunji Otsuka, T. Ogawa, K. Xu, Z. Y. Sumikama, Toshiyuki Söderström, Pär-Anders Doornenbal, Pieter Li, Z. Browne, Frank Gey, Guillaume Jung, H. S. Taprogge, Jan Vajta Zsolt (1985-) (informatikus fizikus) Wu, J. Yagi, Ayumi Baba, H. Benzoni, G. Chae, K. Y. Crespi, F. C. L. Fukuda, Naoki Gernhäuser, R. Inabe, Naohiro Isobe, Tadaaki Jungclaus, A. Kameda, Daisuke Kim, G. D. Kim, Y.-K. Kojouharov, I. Kondev, F. G. Kubo, Toshiyuki Kurz, N. Kwon, Y. K. Lane, G. J. Moon, Chang-Bum Montaner-Pizá, A. Moschner, K. Naqvi, F. Niikura, M. Nishibata, Hiroki Nishimura, Daiki Odahara, Atsuko Orlandi, R. Patel, Zena Podolyák Zs. Sakurai, H. Schaffner, H. Simpson, G. S. Steiger, K. Suzuki, Hiroshi Takeda, Hiroyuki Wendt, A. Yoshinaga, K.
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6.

001-es BibID:BIBFORM059660
035-os BibID:(Scopus)84885618444 (WoS)000325372500001
Első szerző:Watanabe, Hiroshi
Cím:Isomers in 128Pd and 126Pd: Evidence for a robust shell closure at the neutron magic number 82 in exotic palladium isotopes / H. Watanabe, G. Lorusso, S. Nishimura, Z. Y. Xu, T. Sumikama, P.-A. Söderström, P. Doornenbal, F. Browne, G. Gey, H. S. Jung, J. Taprogge, Zs. Vajta, J. Wu, A. Yagi, H. Baba, G. Benzoni, K. Y. Chae, F. C. L. Crespi, N. Fukuda, R. Gernhäuser, N. Inabe, T. Isobe, A. Jungclaus, D. Kameda, G. D. Kim, Y. K. Kim, I. Kojouharov, F. G. Kondev, T. Kubo, N. Kurz, Y. K. Kwon, G. J. Lane, Z. Li, C.-B. Moon, A. Montaner-Pizá, K. Moschner, F. Naqvi, M. Niikura, H. Nishibata, D. Nishimura, A. Odahara, R. Orlandi, Z. Patel, Zs. Podolyák, H. Sakurai, H. Schaffner, G. S. Simpson, K. Steiger, H. Suzuki, H. Takeda, A. Wendt, K. Yoshinaga
Dátum:2013
ISSN:0031-9007
Megjegyzések: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) ?s is proposed to have a spin and parity of 8+ and is associated with a maximally aligned configuration arising from the g9/2 proton subshell with seniority ?=2. For 126Pd, two new isomers have been identified with half-lives of 0.33(4) and 0.44(3) ?s. 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.
Tárgyszavak:Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Physical Review Letters 111 : 15 (2013), p. 152501-1-152501-5. -
További szerzők:Lorusso, Giuseppe Nishimura, Shunji Xu, Z. Y. Sumikama, Toshiyuki Söderström, Pär-Anders Doornenbal, Pieter Browne, Frank Gey, Guillaume Jung, H. S. Taprogge, Jan Vajta Zsolt (1985-) (informatikus fizikus) Wu, J. Yagi, Ayumi Baba, H. Benzoni, G. Chae, K. Y. Crespi, F. C. L. Fukuda, Naoki Gernhäuser, R. Inabe, Naohiro Isobe, Tadaaki Jungclaus, A. Kameda, Daisuke Kim, G. D. Kim, Y.-K. Kojouharov, I. Kondev, F. G. Kubo, Toshiyuki Kurz, N. Kwon, Y. K. Lane, G. J. Li, Z. Moon, Chang-Bum Montaner-Pizá, A. Moschner, K. Naqvi, F. Niikura, M. Nishibata, Hiroki Nishimura, Daiki Odahara, Atsuko Orlandi, R. Patel, Zena Podolyák Zs. Sakurai, H. Schaffner, H. Simpson, G. S. Steiger, K. Suzuki, Hiroshi Takeda, Hiroyuki Wendt, A. Yoshinaga, K.
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