Prompt and delayed spectroscopy of the neutron-rich 94Kr and observation of a new isomer
Prompt and delayed gamma-ray spectroscopy of the neutron-rich 94Kr was performed, as part of the fission campaign at the ALTO facility of the IPN Orsay, using the fast-neutron induced 238U(n,f) reaction in combination with the v-Ball array, a novel hybrid gamma-spectrometer for energy and lifetime measurements. Several new yrast and non-yrast transitions were observed for the first time, extending the previously known level scheme. Additionally, we report on the observation of a new short-lived isomer with a half-life of 30.5(14) ns. The analysis of the
Nilsson orbitals obtained from Gogny CHFB calculations suggests a (9-) spin and an oblate deformation for this isomer corresponding to a two-quasineutron state suggesting a very similar isomeric structure as the neighboring isotones 96Sr and 92Se.
GERST R.B.;
BLAZHEV A.;
WARR N.;
WILSON J. N.;
LEBOIS M.;
JOVANCEVIC Nikola;
THISSE D.;
CANAVAN Rhiann;
RUDIGIER Matthias;
ETASSE D.;
ADAMSKA E.;
ADSLEY P.;
ALGORA A.;
BABO M.;
BELVEDERE B.;
BENITO J.;
BENZONI G.;
BOSO A.;
BOTTONI S.;
BUNCE M.;
CHAKMA R.;
CIEPLICKA-ORYNCZAK N.;
COURTIN S.;
CORTES M. L.;
DAVIES P.;
DELAFOSSE C.;
FALLOT M.;
FORNAL B.;
FRAILE L.M.;
GJESTVANG D.;
GOTTARDO A.;
GUADILLA V.;
HAEFNER G.;
HAUSCHILD K.;
HEINE M.;
HENRICH C.;
HOMM I.;
IBRAHIM F.;
ISKRA L.W.;
IVANOV Peter;
JAZWARI S.;
KORGUL A.;
KOSEOGLOU P.;
KROELL T.;
KURTUKIAN-NIETO T.;
LE MEUR L.;
LEONI S.;
LJUNGVALL J.;
LOPEZ-MARTENS A.;
LOZEVA R.;
MATEA I.;
MIERNIK K.;
NEMER J.;
OBERSTEDT Stephan;
PAULSON W.;
PIERSA M.;
POPOVITCH Y.;
PORZIO C.;
QI Liqiang;
RALET D.;
REGAN P. H;
REYGADAS-TELLO D.;
REZYNKINA K.;
SCHMITT C.;
SUERDER C.;
SÁNCHEZ-TEMBLEQUE V.;
SÖDERSTRÖM P.A.;
TOCABENS G.;
VEDIA V.;
VERNEY D.;
WASILEWSKA B.;
WIEDERHOLD J.;
YAVACHOVA M.;
ZEISER F.;
ZILLIANI S.;
2021-01-13
AMER PHYSICAL SOC
JRC120460
2469-9985 (online),
https://journals.aps.org/prc/abstract/10.1103/PhysRevC.102.064323,
https://publications.jrc.ec.europa.eu/repository/handle/JRC120460,
10.1103/PhysRevC.102.064323 (online),
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