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Chen, S.*; Browne, F.*; Doornenbal, P.*; Lee, J.*; Obertelli, A.*; Tsunoda, Yusuke*; Otsuka, Takaharu*; Chazono, Yoshiki*; Hagen, G.*; Holt, J. D.*; et al.
Physics Letters B, 843, p.138025_1 - 138025_7, 2023/08
Times Cited Count:1 Percentile:64.66(Astronomy & Astrophysics)Gamma decays were observed in Ca and Ca following quasi-free one-proton knockout reactions from Sc. For Ca, a ray transition was measured to be 1456(12) keV, while for Ca an indication for a transition was observed at 1115(34) keV. Both transitions were tentatively assigned as the decays. A shell-model calculation in a wide model space with a marginally modified effective nucleon-nucleon interaction depicts excellent agreement with experiment for level energies, two-neutron separation energies, and reaction cross sections, corroborating the formation of a new nuclear shell above the N = 34 shell. Its constituents, the and orbitals, are almost degenerate. This degeneracy precludes the possibility for a doubly magic Ca and potentially drives the dripline of Ca isotopes to Ca or even beyond.
Zhukov, A. A.*; de Groot, P. A. J.*; Kokkaliaris, S.*; Di Nicolo, E.*; Jansen, A. G. M.*; Mossang, E.*; Martinez, G.*; Wyder, P.*; Wolf, T.*; Kpfer, H.*; et al.
Physical Review Letters, 87(1), p.017006_1 - 017006_4, 2001/07
Times Cited Count:13 Percentile:60.18(Physics, Multidisciplinary)no abstracts in English
Zhukov, A. A.*; Kokkaliaris, S.*; de Groot, P. A. J.*; Jansen, A. G. M.*; Mossang, E.*; Asaoka, Hidehito; Wolf, T.*; Gagnon, R.*; Taillefer, L.*
Physica C, 341-348(Part2), p.1027 - 1030, 2000/11
no abstracts in English