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2 results on '"Svirikhin AI"'

1. Stability of the heaviest elements: K isomer in No-250

Author

Kallunkathariyil, J, Sulignano, B, Greenlees, PT, Khuyagbaatar, J, Theisen, Ch, Auranen, K, Badran, H, Bisso, F, Brionnet, P, Briselet, R, Drouart, A, Favier, Z, Goigoux, T, Grahn, T, Hauschild, K, Herzan, A, Hessberger, FP, Jakobsson, U, Julin, R, Juutinen, S, Konki, J, Leino, M, Lightfoot, A, Pakarinen, J, Papadakis, P, Partanen, J, Peura, P, Rahkila, P, Rezynkina, K, Ruotsalainen, P, Sandzelius, M, Saren, J, Scholey, C, Siciliano, M, Sorri, J, Stolze, S, Svirikhin, AI, Uusitalo, J, Vandebrouck, M, Ward, A, Wraith, C, and Zielinska, M

Published
2020

2. Influence of octupole vibration on the low-lying structure of $^{251}\mathrm{Fm}$ and other heavy $N=151$ isotones

Author

Rezynkina, K, Lopez-Martens, A, Hauschild, K, Deloncle, I, Péru, S, Brionnet, P, Chelnokov, ML, Chepigin, VI, Dorvaux, O, Déchery, F, Faure, H, Gall, B, Isaev, AV, Izosimov, IN, Katrasev, DE, Kuznetsov, AN, Kuznetsova, AA, Malyshev, ON, Popeko, AG, Popov, YA, Sokol, EA, Svirikhin, AI, and Yeremin, AV

Abstract

© 2018 American Physical Society. The structure of low-lying excited states in Fm251, populated by the α decay of No255, has been investigated by means of combined γ and internal conversion electron spectroscopy. The values for the internal conversion coefficients for the 1/2+→5/2+ and 5/2+→9/2- transitions have been measured. The determined M2/E3 mixing ratio and lifetime for the 5/2+ decay to the ground state allowed to determine the corresponding reduced transitions strengths of B(E3)=18(6) W.u. and B(M2)=3.0(6)×10-3 W.u. These results, as well as the results of previous studies in N=151 isotopes, are compared to theoretical calculations beyond the mean-field approach, including the first QRPA calculations using the Gogny D1M parametrization for such heavy odd-N nuclei. The comparison points to the importance of accounting for the octupole vibrations for a proper understanding of the low-lying nuclear structure of some of the heaviest elements. ispartof: Physical Review C vol:97 issue:5 pages:054332-054332 status: Published online

Published
2018

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