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Dubna Radioacive Ion Beams DRIBsIII: STATUS and PROSPECTS S. Sidorchuk (JINR, Dubna) 9-16 May 2013, Varna, Bulgaria 1 Stability island: Physical and chemical properties of the heaviest elements. Proton drip-line Neutron drip-line Halo nuclei; Nucleon stability borders; New types of radioactivity; Shell structure evolution; Astrophysical applications; Lightest dripline nuclei - “playground” for testing theoretical models. 2 D.I. Mendeleev’s Periodic Table of the Elements (2012) Structure of exotic nuclei near and beyond the drip-lines shell population scheme 1s-0d 0p1/2 Beam 0p Excitation energy E * (MeV) Intensity, pps Purity, % 20 - 45 1106 99 0p3/2 6Не 0s 8 Не Cryogenic tritium/deuterium target, transfer reactions: 4,5H, 5-10He, 10-13Li, 12-16Be… Shell structure evolution – 9,10He; Two-proton radioactivity, rare decays: Optical Time Projection Chamber ; Lightest dripline nuclei - “playground” for testing theoretical models. Energy,MeV/u 15 -n 30 p np 9Li 15 -145 2+ 11Li 6 + -2 35 np 1 12Be 4 14Be 15 1 1106 N = 8 isotone 1 30 +- 40 0 16 C 18 Ne 1516-O45 2+ 95 0 ground state 14 C 90 3103 2 98 np 98 1104 15 - 35 2 10C np 1106 15 - 40 + 5104 104 1 2+ 5 31012 Be 80 1 75 80 He 10 18C 15 - 40 3103 80 12N 30 - 40 2x104 25 13O 35 - 45 4x103 5 14O 30 - 45 2x105 50 15O 20 - 45 5x106 60 17Ne 20 - 35 3x103 5 18Ne 20 - 40 2x106 50 What next? EXOTIC NUCLEI: Mass range of secondary beams; Intensity of secondary beams; Beam purity; SHE: Heaviest target: 249Cf → Zmax= 118 Heavier projectiles (50Ti, 54Cr, 58Fe, 64Ni) Heavier targets (251Cf, 254Es -???); Symmetric reactions: 136Xe+136Xe, 136Xe+150Nd, 150Nd+150Nd; Nucleon transfer reactions (136Xe+208Pb, 238U+248Cm). Sufficient increasing of overall experiment efficiency is needed! 6 Project DRIBs-III (2010 – 2016) The purpose of the project is expansion of a set of accelerated ions, both of stable, and radioactive isotopes, essential increase of intensity and quality of beams. Realization of project DRIBs-III provides: creation of the high-intensity universal accelerator of heavy ions (A≤ 100, E ≤ 10 MeV ·A , I ≤ 10 pµA), creation of a new experimental hall (2600 m2), completion of modernization of cyclotrons U400 and U400М, creation of new generation experimental set-ups. Funds: 60,000,000 $. Full-scale realization off the DRIBs-III Nuclear physics with stable & RI-beams SHE Factory U200 1000m2 IC100 Production & study of exotic nuclei 1500m2 DRIBs DC-280 new U400R upgraded Applied research MT25 U400M &SC ECR Nano/Lab 1500m2 Schedule of the SHE factory creation DC280-cyclotron – stand-alone SHE-factory DC280 (expected) E=4÷8 MeV/A Synthesis and study of properties of superheavy elements. Search for new reactions for SHEsynthesis. Chemistry of new elements. Ion Ion energy [MeV/A] Output intensity 7Li 4 1×1014 18O 8 1×1014 40Ar 5 6×1013 48Ca 5 0,6-1,2×1014 54Cr 5 2×1013 58Fe 5 1×1013 124Sn 5 2×1012 136Xe 5 1×1014 238U 7 5×1010 Manufacturing of DC280 has been started. SHE Factory construction area New FLNR gas-filled separator PAC for NP 32nd Meeting, 17-18 June 2010 “chemical” “physical” Reaction Transmission 244Pu(48Ca,3n)289114 60 % 244Pu(58Fe,4n)298120 75 % Mass-spectrometer MASHA PAC for NP 31st Meeting, 25-26 January 2010 Fragment-separator ACCULINNA-2 Manufacturing has been started THANK YOU FOR YOUR ATTENTION ! Flerov Laboratory of Nuclear Reactions (JINR) Velocity filter for asymmetric combinations VASSILISSA-GABRIELLA PAC for NP 31st Meeting, 25-26 January 2010 High transmission for asymmetric combinations (beams of 12C, 14N,16O, 22Ne) Availability for symmetric combinations (136Xe + 136Xe → 272Hs*) Characteristics of existing and new inflight RIB separators (DW and Dp/p are angular and momentum acceptances, Rp/Dp is the first-order momentum resolution when 1 mm object size is assumed) ACC / ACC-2 FLNR JINR RIPS / BigRIBS RIKEN A1900 MSU FRS / SuperFRS GSI LISE3 GANIL DW, msr 0.9 / 5.8 5.0 / 8.0 8.0 0.32 / 5.0 1.0 Dp/p, % ± 2.5 / ± 3.0 ± 3.0 / 6.0 ± 5.5 ± 2.0 / 5.0 ± 5.0 Rp/Dp 1000 / 2000 1500 / 3300 2915 8600 / 3050 2200 Br, Tm 3.2 / 3.9 5.76 / 9.0 6.0 18 / 18 3.2 - 4.3 Length, m 21 / 38 27 / 77 35 74 / 140 19(42) E, AMeV 10÷40 / 6÷60 50÷90 / 350 110÷160 220÷1000/1500 40÷80 Additional RIB Filter No / RF-kicker RF-kicker / S-form S-form & RF- kicker S-form / Preseparator Wien Filter Joint Institute for Nuclear Research Dubna Laboratory of High Energy Physics Laboratory of Nuclear Problems Laboratory of Theoretical Physics Laboratory of Neutron Physics Flerov Lab of Nuclear Reactions Lab of Information Technologies Synthesis of new elements; Laboratory of Radiation Chemical andBiology physical properties of heavy and superheavy nuclides; and spectroscopy of heavy nuclei; Structure of light nuclei near and beyond the driplines; Applied studies; 18 FLNR - 2011 U200 Nanotechnology IC100 SHE Exotic Nuclei E = 30 ÷ 50 MeV/n A < 20 DRIBs U400 MT25 U400M Structure of exotic nuclei near and beyond the drip-lines shell population scheme 1s-0d 0p1/2 Beam 0p Excitation energy E * (MeV) Intensity, pps Purity, % 20 - 45 1106 99 0p3/2 6Не 0s 8 Не Cryogenic tritium/deuterium target, transfer reactions: 4,5H, 5-10He, 10-13Li, 12-16Be… Shell structure evolution – 9,10He; Two-proton radioactivity, rare decays: Optical Time Projection Chamber ; Lightest dripline nuclei - “playground” for testing theoretical models. Energy,MeV/u 15 -n 30 p np 9Li 15 -145 2+ 11Li 6 + -2 35 np 1 12Be 4 14Be 15 1 1106 N = 8 isotone 1 30 +- 40 0 16 C 18 Ne 1516-O45 2+ 95 0 ground state 14 C 90 3103 2 98 np 98 1104 15 - 35 2 10C np 1106 15 - 40 + 5104 104 1 2+ 5 31012 Be 80 1 75 80 He 10 18C 15 - 40 3103 80 12N 30 - 40 CCD 2x104 25 13O 35 - 45 4x103 5 14O 30 - 45 45 2x105 50 15O 20 - 45 Fe 5x106 60 17Ne 20 - 35 3x103 5 18Ne 20 - 40 2x106 50