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FRS Stopped ‘Campaign’

FRS Stopped ‘Campaign’. Physics Aims? Physics aims are study of nuclear structure properties of exotic nuclei using g , b , a and proton decay. Time Scale ? Starting late summer 2005, 1 to 2 months of beam time (4 to 8 experiments) Reasoning Behind Campaign ? Efficiency

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FRS Stopped ‘Campaign’

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  1. FRS Stopped ‘Campaign’ • Physics Aims? • Physics aims are study of nuclear structure properties of exotic nuclei using g, b, a and proton decay. • Time Scale ? • Starting late summer 2005, • 1 to 2 months of beam time (4 to 8 experiments) • Reasoning Behind Campaign ? • Efficiency • calibration of FRS, data acquisition, electronics set-up, most efficient detector set-up. • Window of Opportunity • Detectors available (RISING!!) • Do physics nowhere else can!

  2. Heaviest odd-odd,N=Z gammas, isobaric analog states ?86Tc, C. Chandler et al. Phys. Rev. C61 (2000) 044309

  3. J. Garces Narro et al. Phys Rev. C63 (2001) 044307 Implant fragments into Si strip detector…if N=Z, stop beam for 1second and wait….. BIL gated All T=1 ground states in heavy odd-odd N=Z

  4. Gamma-gamma analysis on 200Pt isomer (21 ns!), Caamano et al. Nucl. Phys. A682 (2001) p223c; Acta Phys. Pol. B32 (2001) p763

  5. M. de Jong et al. Nucl. Phys. A613 (1997) p435 M. Pfutzner et al. PRC65 (2002) 063604 K. Gladnishki, Z. Podolyak et al,. PRC69 (2004) 024617

  6. Isomer Experiments Shape coexistence in neutron deficient Z>82 Single particle states around 132Sn ? Seniority isomers around 78Ni ? K-isomers in 180 and N=74 ? Neutron rich, Z~82 spectroscopy ? Other (related) work G-factor measurements fast timing using BaF2 DSSD work ? Beta-delayed gamma-ray spectroscopy Proton emitters alpha fine structure Possible Physics Aims

  7. Detectors RISING CLUSTERs BaF2 for fast timing active stopper(s)? Si only ? CdZnTe ? Active degraders ? Flash problem ? Dedicated electronics TDR ? Free running clock ? Experimental Equipment

  8. Holdovers from the Isomer Campaign(EA June 29 2000!) • Experiments related to fast campaign • 132Te Coulex (Schlegel/Gerl 18 shifts) • 32Mg Coulex via 2-step fragmentation (Gerl 21 shifts) • Stopped Experiments from Campaign still to run. • Effective charges around 56Ni (Rudolph, 12 shifts) • Isomer spec. around 78Ni with fission frags. (Grawe 21 shifts) • Isomer spec. of odd-odd Tz=0 82Nb and 86Tc (Regan 15 shifts) • Experiments which have already run • Shell structure around 132Sn (Mineva et al., 12 shifts) • Isomer spect. and shape coex. of Pb isotopes (Page 15shifts) • Shape coex. in Neutron-Rich Po,Th Nuclei (Podolyak 15 shifts)

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