Evidence for a Smooth Onset of Deformation in the Neutron-Rich Kr Isotopes (vol 108, 062701, 2012)

Albers, M; Warr, N; Nomura, K; Blazhev, A; Jolie, J; Muecher, D; Bastin, B; Bauer, C; Bernards, C; Bettermann, L; Bildstein, V; Butterworth, J; Cappellazzo, M; Cederkaell, J; Cline, D; Darby, I; Das Gupta, S; Daugas, JM; Davinson, T; De Witte, Hans; Diriken, Jan; Filipescu, D; Fiori, E; Fransen, C; Gaffney, LP; Georgiev, G; Gernhaeuser, R; Hackstein, M; Heinze, S; Hess, H; Huyse, Mark; Jenkins, D; Konki, J; Kowalczyk, M; Kroell, T; Kruecken, R; Litzinger, J; Lutter, R; Marginean, N; Mihai, C; Moschner, K; Napiorkowski, P; Singh, BS Nara; Nowak, K; Otsuka, T; Pakarinen, J; Pfeiffer, M; Radeck, D; Reiter, P; Rigby, S; Robledo, LM; Rodriguez-Guzman, R; Rudigier, M; Sarriguren, P; Scheck, M; Seidlitz, M; Siebeck, B; Simpson, G; Thoele, P; Thomas, T; Van de Walle, J; Van Duppen, Piet; Vermeulen, Magda; Voulot, D; Wadsworth, R; Wenander, F; Wimmer, K; Zell, KO; Zielinska, M

doi:10.1103/PhysRevLett.109.209904

Evidence for a Smooth Onset of Deformation in the Neutron-Rich Kr Isotopes (vol 108, 062701, 2012)

Author:

Albers, M

Warr, N ; Nomura, K ; Blazhev, A ; Jolie, J ; Muecher, D ; Bastin, B ; Bauer, C ; Bernards, C ; Bettermann, L ; Bildstein, V ; Butterworth, J ; Cappellazzo, M ; Cederkaell, J ; Cline, D ; Darby, I ; Das Gupta, S ; Daugas, JM ; Davinson, T ; De Witte, Hans ; Diriken, Jan ; Filipescu, D ; Fiori, E ; Fransen, C ; Gaffney, LP ; Georgiev, G ; Gernhaeuser, R ; Hackstein, M ; Heinze, S ; Hess, H ; Huyse, Mark ; Jenkins, D ; Konki, J ; Kowalczyk, M ; Kroell, T ; Kruecken, R ; Litzinger, J ; Lutter, R ; Marginean, N ; Mihai, C ; Moschner, K ; Napiorkowski, P ; Singh, BS Nara ; Nowak, K ; Otsuka, T ; Pakarinen, J ; Pfeiffer, M ; Radeck, D ; Reiter, P ; Rigby, S ; Robledo, LM ; Rodriguez-Guzman, R ; Rudigier, M ; Sarriguren, P ; Scheck, M ; Seidlitz, M ; Siebeck, B ; Simpson, G ; Thoele, P ; Thomas, T ; Van de Walle, J ; Van Duppen, Piet ; Vermeulen, Magda ; Voulot, D ; Wadsworth, R ; Wenander, F ; Wimmer, K ; Zell, KO ; Zielinska, M

Keywords:

Science & Technology, Physical Sciences, Physics, Multidisciplinary, Physics, 01 Mathematical Sciences, 02 Physical Sciences, 09 Engineering, General Physics, 40 Engineering, 49 Mathematical sciences, 51 Physical sciences

Abstract:

The neutron-rich nuclei 94;96Kr were studied via projectile Coulomb excitation at the REX-ISOLDE facility at CERN. Level energies of the first excited 2þ states and their absolute E2 transition strengths to the ground state are determined and discussed in the context of the Eð2þ 1 Þ and BðE2; 2þ 1 ! 0þ 1 Þ systematics of the krypton chain. Contrary to previously published results no sudden onset of deformation is observed. This experimental result is supported by a new proton-neutron interacting boson model calculation based on the constrained Hartree-Fock-Bogoliubov approach using the microscopic Gogny- D1M energy density functional.