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S. Sidorchuk (JINR, Dubna) Dubna Radioacive Ion Beams DRIBsIII: STATUS and PROSPECTS S. Sidorchuk (JINR, Dubna) 9-16 May 2013, Varna, Bulgaria 1
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2 Halo nuclei; Nucleon stability borders; New types of radioactivity; Shell structure evolution; Astrophysical applications; Lightest dripline nuclei - “playground” for testing theoretical models. Stability island: Physical and chemical properties of the heaviest elements. Neutron drip-line Proton drip-line
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D.I. Mendeleev’s Periodic Table of the Elements (2012)
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Structure of exotic nuclei near and beyond the drip-lines BeamEnergy,MeV/uIntensity, ppsPurity, % 6 Не20 - 45 1 10 6 99 8 Не15 - 30 5 10 4 9898 9 Li15 - 45 1 10 6 98 11 Li15 - 35 1 10 4 95 12 Be15 - 40 1 10 6 90 14 Be15 - 35 3 10 3 80 10 C30 - 40 1 10 4 75 16C16C15 - 45 3 10 5 80 18 C15 - 40 3 10 3 80 12 N30 - 402x10 4 25 13 O35 - 454x10 3 5 14 O30 - 452x10 5 5050 15 O20 - 455x10 6 6060 17 Ne20 - 353x10 3 5 18 Ne20 - 402x10 6 5050 Cryogenic tritium/deuterium target, transfer reactions: 4,5 H, 5-10 He, 10-13 Li, 12-16 Be… Shell structure evolution – 9,10 He; Two-proton radioactivity, rare decays: Optical Time Projection Chamber ; Lightest dripline nuclei - “playground” for testing theoretical models.
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6 What next? EXOTIC NUCLEI: Mass range of secondary beams; Intensity of secondary beams; Beam purity;SHE: Heaviest target: 249 Cf → Z max = 118 Heavier projectiles ( 50 Ti, 54 Cr, 58 Fe, 64 Ni) Heavier targets ( 251 Cf, 254 Es -???); Symmetric reactions: 136 Xe+ 136 Xe, 136 Xe+ 150 Nd, 150 Nd+ 150 Nd; Nucleon transfer reactions ( 136 Xe+ 208 Pb, 238 U+ 248 Cm). Sufficient increasing of overall experiment efficiency is needed!
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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: (A≤ 100, E ≤ 10 MeV ·A, I ≤ 10 pµA) 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 m 2 ), completion of modernization of cyclotrons U400 and U400М, creation of new generation experimental set-ups. Funds: 60,000,000 $.
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Full-scale realization off the DRIBs-III U400M DRIBs MT25 U200 IC100 Nuclear physics with stable & RI-beams U400M &SC ECR Nano/Lab 1500m 2 1000m 2 DC-280 new SHE Factory Production & study of exotic nuclei Applied research U400R upgraded
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Schedule of the SHE factory creation
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DC280-cyclotron – stand-alone SHE-factory Synthesis and study of properties of superheavy elements. Search for new reactions for SHE- synthesis. Chemistry of new elements. DC280 (expected) E=4÷8 MeV/A IonIon energy [MeV/A] Output intensity 7 Li41×10 14 18 O81×10 14 40 Ar56×10 13 48 Ca50,6-1,2×10 14 54 Cr52×10 13 58 Fe51×10 13 124 Sn52×10 12 136 Xe51×10 14 238 U75×10 10 Manufacturing of DC280 has been started.
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SHE Factory construction area
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“physical” “chemical” ReactionTransmission 244 Pu( 48 Ca,3n) 289 11460 % 244 Pu( 58 Fe,4n) 298 12075 % New FLNR gas-filled separator 32 nd Meeting, 17-18 June 2010 New FLNR gas-filled separator PAC for NP 32 nd Meeting, 17-18 June 2010
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Mass-spectrometer MASHA 31 st Meeting, 25-26 January 2010 Mass-spectrometer MASHA PAC for NP 31 st Meeting, 25-26 January 2010
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Fragment-separator ACCULINNA-2 Manufacturing has been started
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Flerov Laboratory of Nuclear Reactions (JINR) THANK YOU FOR YOUR ATTENTION !
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High transmission for asymmetric combinations (beams of 12 C, 14 N, 16 O, 22 Ne) Availability for symmetric combinations ( 136 Xe + 136 Xe → 272 Hs*) Velocity filter for asymmetric combinations VASSILISSA-GABRIELLA 31 st Meeting, 25-26 January 2010 VASSILISSA-GABRIELLA PAC for NP 31 st Meeting, 25-26 January 2010
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ACC / ACC-2 FLNR JINR RIPS / BigRIBS RIKEN A1900 MSU FRS / SuperFRS GSI LISE3 GANIL , msr 0.9 / 5.85.0 / 8.08.00.32 / 5.01.0 p/p, % ± 2.5 / ± 3.0± 3.0 / 6.0± 5.5± 2.0 / 5.0± 5.0 Rp/ p 1000 / 20001500 / 330029158600 / 30502200 B , Tm 3.2 / 3.95.76 / 9.06.018 / 183.2 - 4.3 Length, m 21 / 3827 / 773574 / 14019(42) E, AMeV 10÷40 / 6÷6050÷90 / 350110÷160220÷1000/150040÷80 Additional RIB Filter No / RF-kickerRF-kicker / S-formS-form & RF- kicker S-form / Preseparator Wien Filter Characteristics of existing and new in flight RIB separators ( and p/p are angular and momentum acceptances, Rp/ p is the first-order momentum resolution when 1 mm object size is assumed)
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Joint Institute for Nuclear Research Dubna 18
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U400M U400 DRIBs MT25 U200 IC100 FLNR - 2011 Nanotechnology SHE Exotic Nuclei E = 30 ÷ 50 MeV/n A < 20
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Structure of exotic nuclei near and beyond the drip-lines BeamEnergy,MeV/uIntensity, ppsPurity, % 6 Не20 - 45 1 10 6 99 8 Не15 - 30 5 10 4 9898 9 Li15 - 45 1 10 6 98 11 Li15 - 35 1 10 4 95 12 Be15 - 40 1 10 6 90 14 Be15 - 35 3 10 3 80 10 C30 - 40 1 10 4 75 16C16C15 - 45 3 10 5 80 18 C15 - 40 3 10 3 80 12 N30 - 402x10 4 25 13 O35 - 454x10 3 5 14 O30 - 452x10 5 5050 15 O20 - 455x10 6 6060 17 Ne20 - 353x10 3 5 18 Ne20 - 402x10 6 5050 Cryogenic tritium/deuterium target, transfer reactions: 4,5 H, 5-10 He, 10-13 Li, 12-16 Be… Shell structure evolution – 9,10 He; Two-proton radioactivity, rare decays: Optical Time Projection Chamber ; Lightest dripline nuclei - “playground” for testing theoretical models. 45 Fe CCD
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