Evidence for prolate structure in light Pb isotopes from in-beam gamma-ray spectroscopy of 185Pb

Pakarinen, J; Andreev, Andrei; Julin, R; Juutinen, S; Antalic, S; Bianco, L; Darby, Iain Gerard; Eeckhaudt, Sarah; Grahn, Tuomas; Greenlees, PT; Jenkins, David G; Jones, P; Joshi, P; Kettunen, H; Leino, M; Leppanen, A-P; Nieminen, P; Nyman, M; Page, Robert D; Perkowski, J; Raddon, PM; Rahkila, P; Rostron, D; Saren, J; Scholey, C; Sorri, J; Streicher, B; Uusitalo, J; Van de Vel, Karen; Venhart, Martin; Wadsworth, R; Wiseman, DR

doi:10.1103/PhysRevC.80.031303

Evidence for prolate structure in light Pb isotopes from in-beam gamma-ray spectroscopy of 185Pb

Author:

Pakarinen, J

Andreev, Andrei ; Julin, R ; Juutinen, S ; Antalic, S ; Bianco, L ; Darby, Iain Gerard ; Eeckhaudt, Sarah ; Grahn, Tuomas ; Greenlees, PT ; Jenkins, David G ; Jones, P ; Joshi, P ; Kettunen, H ; Leino, M ; Leppanen, A-P ; Nieminen, P ; Nyman, M ; Page, Robert D ; Perkowski, J ; Raddon, PM ; Rahkila, P ; Rostron, D ; Saren, J ; Scholey, C ; Sorri, J ; Streicher, B ; Uusitalo, J ; Van de Vel, Karen ; Venhart, Martin ; Wadsworth, R ; Wiseman, DR

Keywords:

Science & Technology, Physical Sciences, Physics, Nuclear, Physics, HIGH-SPIN STATES, NEUTRON-DEFICIENT, SHAPE COEXISTENCE, INTRUDER STATES, DIPOLE BANDS, SHEARS BANDS, ALPHA-DECAY, IDENTIFICATION, EXCITATIONS, TRANSITIONS, 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, 5106 Nuclear and plasma physics

Abstract:

For the first time, excited states in 185Pb have been observed in in-beam gamma-ray spectroscopic measurements using the recoil-decay tagging method. The resulting level scheme reveals a strongly coupled yrast band structure that originates from coupling of the i_13/2 quasineutron to a prolate deformed core. The band is also observed to de-excite via the spherical alpha-decaying 13/2+ isomeric state.