Collectivity evolution in the neutron-rich Pd isotopes towards the N=82 shell closure
Wang, H. · Aoi, N. · Takeuchi, S. · Matsushita, M. · Doornenbal, P. · Motobayashi, T. · Steppenbeck, D. · Yoneda, K. · Baba, H. · Caceres, L. · Dombradi, Zs. · Kobayashi, K. · Kondo, Y. · Lee, J. · Li, K. · Liu, H. · Minakata, R. · Nishimura, D. · Otsu, H. · Sakaguchi, S. · Sakurai, H. · Scheit, H. · Sohler, D. · Sun, Y. · Tian, Z. · Tanaka, R. · Togano, Y. · Vajta, Zs. · Yang, Z. · Yamamoto, T. · Ye, Y. · Yokoyama, R.
الأصل · EN
The neutron-rich, even-even 122,124,126Pd isotopes has been studied via in-beam gamma-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+ -> 0+ decays. In addition, a candidate for the 4+ state at 1164(20) keV was observed in 122Pd. The resulting Ex(2+) systematics are essentially similar to those of the Xe (Z=54) isotopic chain and theoretical prediction by IBM-2, suggesting no serious shell quenching in the Pd isotopes in the vicinity of N=82.
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