N. Aoi, H. Baba, A. Blazhev, F. Browne, C. Campbell, M. Carpenter, A. Corsi, M.L. Cortés, H. Crawford, M. Cromaz, P. Doornenbal, P. Fallon, A. Gillibert, H. Hess, E. Ideguchi, T. Isobe, J. Jolie, V. Lapoux, H. Liu, A. Macchiavelli, O. Möller, M. Niikura, S. Nishimura, A. Obertelli, V. Panin, N. Pietralla, P. Reiter, L. Riley, H. Sakurai, M. Seidlitz, D. Suzuki, S. Thiel, V. Werner, N. Warr, K. Wimmer and Y. Yamamoto

F. Browne, 2, ∗ A. M. Bruce, T. Sumikama, 2 I. Nishizuka, S. Nishimura, P. Doornenbal, G. Lorusso, 4, 5 P.-A. Söderström, H. Watanabe, 6 R. Daido, Z. Patel, 4 S. Rice, 4 L. Sinclair, 8 J. Wu, 9 Z. Y. Xu, 11 A. Yagi, H. Baba, N. Chiga, 2 R. Carroll, F. Didierjean, Y. Fang, N. Fukuda, G. Gey, 14 E. Ideguchi, N. Inabe, T. Isobe, D. Kameda, I. Kojouharov, N. Kurz, T. Kubo, S. Lalkovski, Z. Li, R. Lozeva, 17 N. Nishibata, A. Odahara, Zs. Podolyák, P. H. Regan, 5 O. J. Roberts, H. Sakurai, H. Schaffner, G. S. Simpson, H. Suzuki, H. Takeda, M. Tanaka, 18 J. Taprogge, 19, 20 V. Werner, 22 and O. Wieland School of Computing, Engineering and Mathematics,

R. Lozeva,1,* A. Odahara,2 C.-B. Moon,3 S. Nishimura,4 P. Doornenbal,4 H. Naı̈dja,1,5,6 F. Nowacki,1 P.-A. Söderström,4 T. Sumikama,7 G. Lorusso,4 J. Wu,8,4 Z. Y. Xu,9 H. Baba,4 F. Browne,10,4 R. Daido,2,4 J.-M. Daugas,11 F. Didierjean,1 Y. Fang,2,4 T. Isobe,4 I. Kojouharov,5 N. Kurz,5 Z. Patel,12,4 S. Rice,12,4 H. Sakurai,4,9 H. Schaffner,5 L. Sinclair,13,4 H. Watanabe,14 A. Yagi,2,4 R. Yokoyama,15 T. Kubo,4 N. Inabe,4 H. Suzuki,4 N. Fukuda,4 D. Kameda,4 H. Takeda,4 D. S. Ahn,4 D. Murai,16 F. L. Bello Garrote,17 E. Ideguchi,18 T. Ishigaki,2,4 H. S. Jung,19 T. Komatsubara,20 Y. K. Kwon,20 S. Morimoto,2,4 M. Niikura,9 H. Nishibata,2,4 I. Nishizuka,7,4 T. Shimoda,2 and K. Tshoo20 1IPHC, CNRS, IN2P3 and University of Strasbourg, F-67037 Strasbourg Cedex 2, France 2Department of Physics, Osaka University, Osaka 560-0043 Toyonaka, Japan 3Department of Display Engineering, Hoseo University, Chung-Nam 336-795, Republic of Korea 4RIKEN Nishina Center, Wako-shi, Saitama 351-0198, Japan 5GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany 6University of Constantine, 25000 Constantine, Algeria 7Department of Physics, Tohoku University, Miyagi 980-8578, Japan 8School of Physics and State key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China 9Department of Physics, University of Tokyo, Tokyo 113-0033, Japan 10School of Computing, Engineering and Mathematics, University of Brighton, Brighton BN2 4GJ, United Kingdom 11CEA, DAM, DIF, F-91297 Arpajon Cedex, France 12Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom 13Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom 14School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China 15CNS, University of Tokyo, Wako, Saitama 351-0198, Japan 16Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan 17Department of Physics, University of Oslo, N-0316, Oslo, Norway 18RCNP, Osaka University, Ibaraki, Osaka 567-0047, Japan 19Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA 20Rare Isotope Science Project, Institute for Basic Science, Daejeon 305-811, Republic of Korea (Received 1 May 2015; revised manuscript received 3 July 2015; published 3 August 2015; corrected 5 August 2015)

Z. Patel, P.-A. Söderström, Zs. Podolyák, P. H. Regan, P. M.Walker, H.Watanabe, E. Ideguchi, G. S. Simpson, H. L. Liu, S. Nishimura, Q. Wu, F. R. Xu, F. Browne, P. Doornenbal, G. Lorusso, S. Rice, L. Sinclair, T. Sumikama, J. Wu, Z. Y. Xu, N. Aoi, H. Baba, F. L. Bello Garrote, G. Benzoni, R. Daido, Y. Fang, N. Fukuda, G. Gey, S. Go, A. Gottardo, N. Inabe, T. Isobe, D. Kameda, K. Kobayashi, M. Kobayashi, T. Komatsubara, I. Kojouharov, T. Kubo, N. Kurz, I. Kuti, Z. Li, M. Matsushita, S. Michimasa, C.-B. Moon, H. Nishibata, I. Nishizuka, A. Odahara, E. Şahin, H. Sakurai, H. Schaffner, H. Suzuki, H. Takeda, M. Tanaka, J. Taprogge, Zs. Vajta, A. Yagi, and R. Yokoyama Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan National Physical Laboratory, Teddington, Middlesex TW11 0LW, United Kingdom International Research Center for Nuclei and Particles in the Cosmos, Beihang University, Beijing 100191, China School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka 567-0047, Japan Department of Physics, Osaka University, Machikaneyama-machi 1-1, Osaka 560-0043 Toyonaka, Japan LPSC, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, Institut National Polytechnique de Grenoble,

We propose to study nuclei around the Pb region in order to understand the influence of the single particle model and collective states in this region. In clarifying the behaviour of these nuclei, we aim to precisely measure half-lives in the longer lived 19 2 , 13 2 , 1 2 + states in Bi using the fast timing LaBr3(Ce) and HPGe detector set-up in Bucharest. We aim to populate these levels using the Pb(Li,α2nγ)Bi proton transfer reaction.

This proposal is an extension of a previous one entitled “Lifetime Measurements of Single Particle States in 209 83 Bi”, which was awarded 10 days of beam-time at the PAC meeting in March 2012. The aim is to study the influence of the single-particle and collective modes in 209 83 Bi, and in July 2012 we measured the half-life of the i13/2 level at Ex=1.608 MeV as 150±25 ps. However this is not sufficiently accurate to give a unique interpretation of the level. We now request to complete this study and extend our findings from the previous experiment in two steps; by using the fast timing, ROSPHERE array of cerium-doped lanthanum bromide (LaBr3(Ce)) and high-purity germanium (HPGe) detectors to acquire more statistics to reduce the uncertainty in the half-life, and to perform an angular distribution measurement in order to determine the B(E3) and B(M2) mixing ratio of the depopulating transition to the 9 2 − level.