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John Henry Poynting First Prof Physics Birmingham 1880-1914 Rudolf Peierls 1907-1995 Birmingham 1937+ (holes in semiconductors) Marcus Laurence Elwin Oliphant 1901-2000 Birmingham 1937-1950 Otto Frisch (1904-1979) Bham 1939+ co-discover of 2H, 3H and 3He Role in first demonstration of nuclear fusion Got plans from Lawrence for Birmingham’s cyclotron John Bell 1928-1990 CPT 1951 Birmingham Luders-Pauli Thm Freeman-Dyson Tony Skyrme (1922-1987) Birmingham, 1949-51 Why are light nuclei so important – Understanding cutting edge theory ? [Otsuka et al., PRL 95 (05) 232502] Tensor correlations [Otsuka et al., PRL 97 (06) 162501] Neutron – proton interaction - - - + + + + - 8Be Ab initio type approaches (Greens Function Monte Carlo) 13 11 + 9 4 7 Ex [MeV] [MeV] Ex Ex 5 3 2+ 1 + -1 0 -1 4 9 14 19 24 Pieper and J(J+1) Wiringa, ANL 9 Ab initio no-core solutions for nuclear structure: Be P. Maris, C. Cockrell, M. Caprio and J.P. Vary Total density Proton - Neutron density Shows that one neutron provides a “ring ” cloud around two alpha clusters binding them together Chase Cockrell, ISU PhD student 12 C Chiral EFT on the lattice 32 S 24 Mg 9Be 9B PHYSICAL REVIEW C 86 , 057306 (2012), PHYSICAL REVIEW C 86 , 014312 (2012) 10 Be 12 C 10 C Characterization of 10 Be * Gas inlet LAMP array Window (2.5 um mylar) LAMP 6He LEDA LAMP LEDA Collimator M. Freer, et al. PRL 2006 Test of method- measure 10.36 MeV 4 + resonance In 16 O ( 12 C+ α) LAMP LEDA LAMP LEDA Resonances in 16 O E( 12 C)=16 MeV Singles Coincidence 10 10 4He Energy Energy (MeV) (MeV) 12 C 0 0 8 24 8 24 Angle Angle Gas pressure = 100 Torr LAMP LEDA LAMP 4 Energy ( 12 C) LEDA θcm ( He) 180 0 Energy ( 4He) 12 180 θcm ( C) Resonance analysis Counts 6000 - =121 mm detector 2000 - (E, θw) ddet window Distance/2+20 (mm) θw θlab dreaction 2 |P 4(cos( θcm )| θcm 6He+ 4He at 7.5 MeV – 7Li+ 7Li the 10.15 MeV state in 10 Be N. Curtis et al FSU 6Li+ 7Li E (MeV) E (MeV) Singles Coincidences 5- 5- 8 θ 8 w 24 θw 24 Singles Coincidence (a) 0 Dist (mm) 22 0 0 theta_cm 160 Simulations Include elastic scattering from potentials derived from 4He+ 6Li Elastic scattering 4+ 2+ 0+ AMD calculations Kanada En’yo 10 Be 12 C 10 C 14 C molecular states - from dimers to polymers prolate oblate von Oertzen and Milin Resonant Scattering of 10 Be+ 4He at ORNL Beam energies: 25, 27, 29, 32, 34, 38, 40, 42, 44 and 46 MeV (I=10 6 pps) Pressure: 0.8 bar Helium-4 5 um Havar absorber (E-loss = ~5 MeV) Ex( 14 C) = 14-25 MeV Zero degree telescope Path of 10 Be ions window Array of wedge detectors Birmingham, Surrey, LPC, Tennessee Rutgers 21.5 20.6 240 keV 19.6 18.7 17.8 Excitation Energy [MeV] Energy Excitation 17.2 16.1 15.4 Oak Ridge Oak Resolution ~ 50 keV Resolution Counts (Normalised) 5- 3- 3- - 1- 5 6+ E [MeV] Ecm [MeV] Angle J(J+1) 11 C and 11 B a phase transition? 7Be+α → 11 C → 7Be+α LLN, ORNL 7Be+α → 11 C → 7Be+α H. Yamaguchi, et al. Phys. Rev. C 83 034306 (2011). 7Li+α → 11 B → 7Li+α 11 11 sd B C 1p 1/2 1p 3/2 1s 1/2 12 C l=1 5- l=1 4+ l=1 4+ 4- + 2 3- K + J 0 2+ 0+ 12 C 4- R. Bijker and F. Iachello, Phys. Rev. C 61, 067305 (2000). 35 deg iThemba, ZA 11 B( 3He,d) 12 C K600 30 deg spectrometer Proton Inelastic Scattering iThemba and Yale 12 C(p,p’) 25 MeV 66 MeV protons K600 spectrometer iThemba Labs, SA 23 keV resolution Moshe Gai et al. Phys. Rev. C Analysis of the 12 C( α, α’) data - RCNP Thanks: Itoh-san Kawabata-san 12 12 2 1010 C(α,C(α’)α,α’) Eα= 388Eα =MeV 388 MeV β = 0 1010 β = −1.9 (mb/str) (mb/str) Ω Ω 11 /d /d σ σ d d -1-1 β = 0 1010 β = −1.9 00 5 10 15 15 20 20 25 30 θcm θ(deg)cm (deg) Background analysis Optical TPC measurements; Moshe Gai et al. Why are light nuclei so important – Understanding cutting edge theory ? ENSAR2 Networking activities Will help to catalyse the mutual coordination and the pooling of resources among the consortium of participants, with the aim of fostering a culture of cooperation between them. This should serve, e.g., to generate critical mass by coordinating research into new instrumentation, new methods, concepts and technologies. Networking activities will also aim at spreading good practice, promoting common protocols and interoperability, encouraging complementarity and, where appropriate, developing and maintaining common databases and stimulating the creation of distributed or virtual facilities. Activities in this context will include, where relevant, publicity concerning new opportunities for access, dissemination of knowledge, training courses for potential users and foresight studies. They will also cover the coordinated implementation and management of the whole activity. The internal consortium management will, where appropriate, monitor the impact of the various activities (e.g. through statistics on transnational users and related projects). Deadline 15 April 2013.