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4/29/20151Cosenors - BentleyOverview Physics of Proton-rich Nuclei in the UK Mike Bentley (Univ. of York, UK) Physics of Proton-rich Nuclei in the UK Mike.

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Presentation on theme: "4/29/20151Cosenors - BentleyOverview Physics of Proton-rich Nuclei in the UK Mike Bentley (Univ. of York, UK) Physics of Proton-rich Nuclei in the UK Mike."— Presentation transcript:

1 4/29/20151Cosenors - BentleyOverview Physics of Proton-rich Nuclei in the UK Mike Bentley (Univ. of York, UK) Physics of Proton-rich Nuclei in the UK Mike Bentley (Univ. of York, UK) Outline: Recent Highlights: RISING physics at GSI Isospin studies at MSU Shapes and Symmetries (JYFL) Prospects: Short term developments Future facilities Outline: Recent Highlights: RISING physics at GSI Isospin studies at MSU Shapes and Symmetries (JYFL) Prospects: Short term developments Future facilities

2 How well does Isospin symmetry hold as A or T z is increased? Limits of nuclear existence rp-process near the drip line Evolution of nuclear shapes n-p pairingOverview

3 4/29/2015 Cosenors - Bentley3 Current facilities (not exhasutive) JYFL – Jurogam + RITU + GREAT (recoil decay tagging) ANL – Gammasphere + FMA (recoil tagging) GSI – RISING stopped beam campaign (decay spectroscopy) REX-ISOLDE – Miniball (Coulex of exotic beams)Overview

4 RISING Rare Isotopic Spectroscopic INvestigations @ GSI = 15 x Cluster germaniums for (the most) exotic gamma-ray spectroscopy Example: RISING at GSI

5 Chemically independent production mechanism for secondary radioactive beams. Time of flight from production to stopper ~x00ns. Some ions transmitted in metastable states. Fragment Separator (FRS) Focal Pane ID Stopped RISING Example: RISING at GSI

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9 A.B. Garnsworthy et al., Phys. Lett. B660, 326 (2008) Example: RISING at GSI

10 Texas A&M Cyclotron Institute: May 200710 NSCL Experiment #5117, March 2007 0.5 -1.0 × 10 6 pps (70% 56 Ni) 188 mg/cm 2 Be 10pnA 58 Ni 600 mg/cm2 Be target S800 Spectrograph Example: Fragmentation at MSU

11 4/29/2015 Cosenors - Bentley11 S800 – Fragment ID Z A/Q Drip line J.R. Brown et al. (YORK) in prep (2008) Example: Fragmentation at MSU

12 4/29/2015 Cosenors - Bentley12 First spectrsocopy of N=Z-3 nuclei above 33 Ar 53 Mn 53 Ni 49 V 49 Fe J.R. Brown et al. (YORK) in prep (2008) Example: Fragmentation at MSU

13 4/29/2015 Cosenors - Bentley13 J.R. Brown et al. (YORK) in prep (2008) Observed A=54 MED Expected MED (2 holes) Decreasing overlap of two nucleons coupled to increasing spin J Charge Symmetry Breaking – spin dependence (J=2 Anomaly) Example: Fragmentation at MSU

14 Recoil decay tagging at Jyvaskyla JUROGAM RITU Gas-filled recoil separator Transmission 20-50 % GREAT Focal plane spectrometer TDR Total Data Readout Triggerless data acquisition system with 10 ns time stamping Example: Recoil Decay Tagging at Jyvaskyla

15 Recoil-β-tagging using GREAT  Useful for odd-odd N=Z, A>60-100 and N { "@context": "http://schema.org", "@type": "ImageObject", "contentUrl": "http://images.slideplayer.com/13/3845333/slides/slide_15.jpg", "name": "Recoil-β-tagging using GREAT  Useful for odd-odd N=Z, A>60-100 and N

16 B S Nara Singh et al, PRC 75 061301(R) 2007 78 Y Results T 1/2 = 47 (5) ms 74 Rb 78 Y Example: Recoil Decay Tagging at Jyvaskyla

17 Neutron-proton pairing effects ? Shape-changing effects ? Example: Recoil Decay Tagging at Jyvaskyla

18 4/29/2015 Cosenors - Bentley18 Next in-beam campaign at GSI... PRESPEC – spokesperson MAB 2010-2011ADVERT

19 4/29/2015 Cosenors - Bentley19 Future facilities (not exhasutive) HIE-ISOLDE FAIR – HISPEC (in-beam) and DESPEC (decay spectroscopy) SPIRAL2 – in-beam reactions with exotic ions, or use of high- intensity LINAC beams Future facilities for p-rich nuclei

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