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COLLAPS 2012 – Status and Outlook
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The Year @ COLLAPS 2 IS 529 Spins, Moments and Charge Radii Beyond 48 Ca IS 497 Laser Spectroscopy of Cadmium Isotopes: Probing the Nuclear Structure Between the Neutron 50 and 82 Shell Closures IS 484 Ground-state properties of K-isotopes from laser and β-NMR spectroscopy I 88 β-NMR as a novel technique for biological applications IS 508 Collinear laser spectroscopy of manganese isotopes using optical pumping in ISCOOL
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IS 529: Spins, Moments and Charge Radii Beyond 48 Ca 3 Proposal Objectives: 49..52 Ca First use of the new optical detection station with ions. T ac ≈ 100 ms T b ≈3μs release
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IS 529: Spins, Moments and Charge Radii Beyond 48 Ca 4 52 Ca with ≈ 300 ions/s after 4 hours
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IS 497: Laser Spectroscopy of Cadmium Isotopes: Probing the Nuclear Structure Between the Neutron 50 and 82 Shell Closures 5 Proposal Objectives: 100..130 Cd In the process of reaching this a new wavelength range was opened up.
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Commissioning of the laser system 860 nm 430 nm 215 nm 35 mW output maintained over 5 hours
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IS 497: Laser Spectroscopy of Cadmium Isotopes: Probing the Nuclear Structure Between the Neutron 50 and 82 Shell Closures 7 130 Cd # counts transition in Cd II: 5s 2 S 1/2 → 5p 2 P 3/2 @ 214 nm
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IS 484: Ground-state properties of K-isotopes from laser and β-NMR spectroscopy 8 N=20 N=28 40 Ca 35 P 41 Ca 39 Ar 38 Cl 37 S 36 P 39 Cl 38 S 37 P 42 K 41 Ar 40 Cl 39 S 38 P 43 K 42 Ar 41 Cl 40 S 39 P 45 Ca 44 K 43 Ar 42 Cl 41 S 40 P 45 K 44 Ar 43 Cl 42 S 41 P 47 Ca 46 K 45 Ar 44 Cl 43 S 42 P 47 K 46 Ar 45 Cl 44 S 43 P 39 Ca 38 K 37 Ar 36 Cl 35 S 34 P 42 Ca 43 Ca 44 Ca 46 Ca 48 Ca 39 K 40 K 41 K 40 Ar 38 Ar 37 Cl 36 S d 3/2 s 1/2 Z=17 Z=20 f 7/2 p 3/2 Z=19 48 K 49 K 50 K 51 K (1/2,3/2)?
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IS 484: Ground-state properties of K-isotopes from laser and β-NMR spectroscopy 9 Proposal Objectives: 51 K
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I 88: β-NMR as a novel technique for biological applications 10 Objective: Demonstrate online β-NMR in liquid samples. Pressure-dependent β-decay asymmetry MgO single crystal Ionic liquid Beam transmission
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I 88: β-NMR as a novel technique for biological applications 11 EMIM-Ac βNMR spectrum for 31 Mg in ionic liquid EMIM-Ac
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IS 508: Collinear laser spectroscopy of manganese isotopes using optical pumping in ISCOOL 12 Proposal Objectives: 57..66 Mn 10.5 shifts of 18 taken. 51..64 Mn measured including 58,60,62 Mn isomers. N=32
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IS 508: Collinear laser spectroscopy of manganese isotopes using optical pumping in ISCOOL 13
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Outlook for Ca 14 Radioactive detection of Optically pumped ions after state selective Charge exchange (ROC) The theoretical possibilities: 1 ion/s of an even isotope over 5 shifts.
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Outlook for Cd 15 Yields drop by 2 orders of magnitude per isotope beyond 100 or 130… The limit. But Laser system developed opens up many more possibilities in this region And beyond. Publications of spins moments and charge radii in preparation. -> See poster by D. T. Yordanov for more details.
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Outlook for K 16 Publications:Spins and Moments (J Papuga et al.) in preparation. Charge radii (K. Kreim et al.) in preparation. See Poster by Jasna for details. Future prospects: With an intensity upgrade 52 K comes into reach. Quadrupole moments may also shed light on the structural evolution in this region.
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Outlook for Bio - β-NMR 17 Publications:Proof of concept results in preparation for publication. See talk by A. Gottberg. Future prospects: Enormous possibilities for both Biological and Solid State physics. but Will require a dedicated beamline and laser systems. Possibilities to develop polarized beams for an entire range of elements.
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Outlook for Mn 18 Analysis underway by B. Cheal and C. Babcock. Realignment of ISCOOL during the shutdown will allow optical pumping in the cooler for this case and others. - 65, 66 Mn are then easily reached.
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Thanks To 19 Carla Babcock 4, Dimiter Balabanski 1, Mark Bissell 2, Ivan Budincevic 2, Klaus Blaum 3, Bradley Cheal 4, Marieke de Rydt 2, Nadja Frömmgen 5, Ronald Garcia Ruiz 2, Georgi Georgiev 6, Christopher Geppert 7,8, Michael Hammen 5, Hanne Heylen 2, Magdalena Kowalska 9, Kim Kreim 3, Andreas Krieger 5,8, Rainer Neugart 3, Gerda Neyens 2, Wilfried Nörtershäuser 8,10,5, Jasna Papuga 2, Mustafa Rajabali 2, Rodolfo Sanchez-Alarcon 7,10, Stefan Schmidt 5,8,10 and Deyan Yordanov 3 — 1 INRNE, Bulgarian Academy of Science, BG-1784 Sofia,Bulgaria — 2 Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, Belgium — 3 Max-Planck-Institut für Kernphysik,Heidelberg, Deutschland — 4 School of Physics and Astronomy, University of Manchester, M13 9PL, UK — 5 Institut für Kernchemie, Johannes Gutenberg-Universität Mainz, Deutschland — 6 CSNSM-IN2P3-CNRS, Universit/ de Paris Sud, F-91405 Orsay, France — 7 Helmholtz-Institut Mainz, Mainz, Deutschland — 8 Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Deutschland — 9 CERN,Physics Department, Geneva, Switzerland — 10 GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Deutschland
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