Isomers and high-spin structures in the N = 81 isotones 135Xe and 137Ba (CROSBI ID 237071)
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Podaci o odgovornosti
Vogt, A. ; Birkenbach, B. ; Reiter, P. ; Blazhev, A. ; Siciliano, M. ; Hadynska_Klek, K. ; Valiente-Dobón, J.J. ; Wheldon, C. ; Teruya, E. ; Yoshinaga, N. ; Arnswald, K. ; Bazzacco, D. ; Bowry, M. ; Bracco, A. ; Bruyneel, B. ; Chakrawarthy, R.S. ; Chapman, R. ; Cline, D. ; Corradi, L. ; Crespi, F.C.L. ; Cromaz, M. ; de Angelis, G. ; Eberth, J. ; Fallon, P. ; Farnea, E. ; Fioretto, E. ; Freeman, S.J. ; Fu, B. ; Gadea, A. ; Geibel, K. ; Gelletly, W. ; Gengelbach, A. ; Giaz, A. ; Görgen, A. ; Gottardo, A. ; Hayes, A.B. ; Hess, H. ; Hirsch, R. ; Hua, H. ; John, P.R. ; Jolie, J. ; Jungclaus, A. ; Kaya, L. ; Korten, W. ; Lee, I.Y. ; Leoni, S. ; Lewandowski, L. ; Liang, X. ; Lunardi, S. ; Macchiavelli, A.O. ; Menegazzo, R. ; Mengoni, D. ; Michelagnoli, C. ; Mijatović, Tea ; Montagnoli, G. ; Montanari, D. ; Muller-Gatermann C. ; Napoli, D. ; Pearson, C.J. ; Pellegri, L. ; Podolyak, Zs. ; Pollarolo, G. ; Pullia, A. ; Queiser, M. ; Radeck, F. ; Recchia, F. ; Regan, P.H. ; Rosiiak, D. ; Saed-Samii, N. ; Sahin, E. ; Scarlassara, F. ; Schneiders, D. ; Seidlitz, M. ; Siebeck, B. ; Sletten, G. ; Smith, J. F. ; Söderström, P.-A. ; Stefanini, A.M. ; Steinbach, T. ; Stezowski, O. ; Szilner, Suzana ; Szpak, B. ; Teng, R. ; Ur, C. ; Vandone, V. ; Warner, D.D. ; Wiens, A. ; Wu, C.Y. ; Zell, K. O.
engleski
Isomers and high-spin structures in the N = 81 isotones 135Xe and 137Ba
The high-spin structures and isomers of the N = 81 isotones 135Xe and 137Ba are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in 136Xe+238U and (ii) 136Xe+208Pb MNT reactions employing the high-resolution Advanced Gamma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (iii) in the 136Xe+198Pt MNT reaction employing the γ -ray array GAMMASPHERE in combination with the gas-detector array CHICO, and (iv) via a 11B+130Te fusion-evaporation reaction with the HORUS γ -ray array at the University of Cologne. The high-spin level schemes of 135Xe and 137Ba are considerably extended to higher energies. The 2058-keV (19/2−) state in 135Xe is identified as an isomer, closing a gap in the systematics along the N = 81 isotones. Its half-life is measured to be 9.0(9) ns, corresponding to a reduced transition probability of B(E2, 19/2− → 15/2−) = 0.52(6) W.u. The experimentally deduced reduced transition probabilities of the isomeric states are compared to shell-model predictions. Latest shell-model calculations reproduce the experimental findings generally well and provide guidance to the interpretation of the new levels.
multinucleon-transfer reaction ; high-spin structures
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