G-factor measurement at RISING: The case of 127 Sn Liliya Atanasova University of Sofia.

Slides:

Advertisements

Similar presentations

Paddy Regan for the Stopped Beam Rising Collaboration Dept. of Physics, University of Surrey The (Stopped Beam) RISING Experimental.

Advertisements

First Results from the Stopped RISING Campaign at GSI: The Mapping of Isomeric Decays in Highly Exotic Nuclei Paddy Regan (for the Stopped Beam Rising.

Decay spectroscopy of neutron- rich Lead isotopes “Universa Universis Patavina Libertas” 1.Experimental details 2.Preliminary results 3.Seniority scheme.

Expected counting rates. FRS experimental setup Total load is limited by SC1 and MUSIC1.

Isomeric states in 98 Cd and 98 Ag Andrey Blazhev University of Cologne PRESPEC Decay Physics Workshop January 2011, Brighton, UK.

Coulomb excitation of the band-terminating 12 + yrast trap in 52 Fe IFIC, CSIC – University of Valencia, Spain University and INFN-Sezione di Padova, Italy.

BEAM INTENSITIES WITH EURISOL M. Valentina Ricciardi GSI, Darmstadt, Germany.

Relativistic Coulomb excitation of nuclei near 100 Sn C.Fahlander, J. Eckman, M. Mineva, D. Rudolph, Dept. Phys., Lund University, Sweden M.G., A.Banu,

Configuration of RISING for Measurements of Spin-alignment and g-factors by TDPAD.

Rare ISotope INvestigation at GSI Status of the relativistic beam campaign Introduction Fast beam physics program Experimental methods Status and perspectives.

Parity Violation in the  decay of polarized 93 Tc 17/2 - isomers B.S. Nara Singh, M. Hass and G. Goldring Weizmann Institute of Science, ISRAEL D. Ackerman,

D.L. BalabanskiEURISOL workshop, Florence, Nuclear moments of isomeric states studied in transfer reactions in inverse kinematics moments.

RISING Project Adam Maj Adam Maj (IFJ PAN Kraków) NEEN meeting in Krakow September 14/ Rare Isotopes Investigation at GSI.

New Isomers from Fast Fragmentation Reactions Dr. Paddy Regan Dept. of Physics University of Surrey, Guildford, GU2 7XH, UK

Spin alignment and g-factor measurements with RISING Maria Kmiecik IFJ PAN NZ22 IFJ PAN Review 5-6 Feb IFJ PAN Review 5-6 Feb

Luis M Fraile ISOLDE, PH/IS, CERN, Switzerland Universidad Complutense, Madrid, SPAIN FastPool Fast timing pool of detectors and electronics FastPool EURONS.

Xy position from LYCCA Slowed down beams - new perspective for GOSIA scattering experiments at relativistic energies.

N. Saito The RISING stopped beam physics meeting Technical status of RISING at GSI N. Saito - GSI for the RISING collaboration Introduction Detector performance.

Recent Results in Fragmentation Isomer Spectroscopy with RISING Paddy Regan Dept. of Physics University of Surrey Guildford, GU2 7XH, UK

Status of the ISOLDE DECAY STATION - IDS Hilde De Witte IDS status report, ISCC, June 24 th 2014.

Primary beam production target ESR The GSI Radioactive Beam Facilities RISING high-resolution Ge  -spectrometer.

F. Azaiez (IPN-Orsay) The European Collaboration for Stable Ion Beams – ECOS Pushing the limits with high intensity stable beams A typical bottom up initiative.

Nuclear moments of excited states. Recent results, developments and perspectives. Nuclear moments of isomeric states – results ~ N=40 from projectile-fragmentation.

Nuclear Structure studies using fast radioactive beams J. Gerl SNP2008 July Ohio University, Athens Ohio USA –The RISING experiment –Relativistic.

Future for (Stopped) RISING.....the road to DESPEC.

Relativistic Coulomb Excitation of Neutron-Rich 54,56,58 Cr Herbert Hübel Helmholtz-Institut für Strahlen- und Kernphysik Universität Bonn Germany.

D.L. BalabanskiPhysics of Nuclei at Extremes, T.I.Tech, Nuclear moments and structure of isomers in regions far from stability Dimiter L.

Exploring life-time of low-lying states in neutron-rich nuclei towards 78Ni with the plunger technique at GANIL B. Mouginot (IPN-Orsay) E. Fiori, G. Georgiev,

Electromagnetic moments for isomeric states in nuclei far from stability in nuclei far from stability NIPNE Bucharest ↔ INFN LNL Legnaro 10 experiments.

AGATA AGATA Advanced Gamma-Ray Tracking Array Next-generation spectrometer based on  -ray tracking Radioactive and stable beams, high recoil velocities.

RISING: Rare Isotope Spectroscopic INvestigation at GSI CEA Saclay CSNSM Orsay GANIL Caen IPN Orsay CLRC Daresbury Univ. Keele Univ. Liverpool Univ. Manchester.

Rare ISotope INvestigation at GSI experimental set-up sub-shell closure (N=32 gap) for Cr nuclei pairing interaction in semi-magic Sn nuclei shapes and.

Magnetic moment measurements with the high-velocity transient field (HVTF) technique at relativistic energies Andrea Jungclaus IEM-CSIC Madrid, Spain Andrew.

Coulomb excitation of neutron-rich 32,33 Mg nuclei with MINIBALL at HIE-ISOLDE P. Reiter 1, B. Siebeck 1, M. Seidlitz 1, A. Blazhev 1, K. Geibel 1, N.

Rare Isotope Spectroscopic INvestigation at GSI. abrasion ablation  σ f [cm 2 ] for projectile fragmentation + fission  luminosity [atoms cm -2 s -1.

RESULTS: Singles Gamma Spectra  Five gamma energy transitions were  observed with energies739 keV, 822 keV, 712 keV 849 keV and 111 keV γ –γ Coincidence.

Protons Neutrons Nuclear structure at finite temperature probed by the Giant Dipole Resonance G. Benzoni, O. Wieland, A. Bracco, N. Blasi, F. Camera, F.

Polarized beams at HIE-ISOLDE – from dreams to reality. G. Georgiev 1, M. Hass 2, A. Herlert 3, D.L. Balabanski 4, L. Hemmingsen 5, K. Johnston 3, M. Lindroos.

Lifetime measurements from EXILL-FATIMA campaign Pietro Spagnoletti University of the West of Scotland.

FAIR (Facility for Antiproton and Ion Research) (Darmstadt, Germany) low-energy cave MeV/u fragmentation/fission ~1GeV/u fragment separator 350m.

B elgian R esearch I nitiative on e X otic nuclei ISOLDE INTC-P-316 Spokespersons: G. Neyens, M.M. Rajabali, K.U. Leuven Local contact: K.T. Flanagan,

Beam intensities with EURISOL Aleksandra Kelić, GSI-Darmstadt on behalf of the EURISOL DS Task 11 Participants and contributors: ISOLDE-CERN, CEA/Saclay,

Adam Maj IFJ PAN Krakow Search for Pigmy Dipole Resonance in 68 Ni RISING experiment in GSI EWON Meeting Prague, May, 2007.

Coulomb-excitation of the exotic nuclei 94 Kr and 96 Kr M. Albers 1, N. Warr 1, D. Mücher 1, A. Blazhev 1, J. Jolie 1, B. Bastin 2, C. Bernards 1, J. Butterworth.

330 mm 290 mm 210 mm 60 mm 20 mm The magnet Beam through a hole of 75 mm in the yoke Pole gap: 90 mm.

Study of isomeric states using gamma spectroscopy around N=40 C. Petrone 1,2, J. M. Daugas 3, M. Stanoiu 1, F. Negoita 1, G. Simpson 4, C. Borcea 1, R.

Bertram Blank CEN Bordeaux-Gradignan IVICFA 's Fridays: EXPERIMENTAL PHYSICS, October 3, 2014 Discovery of radioactive decays One-proton radioactivity.

Daniel Bloor & The AGATA Collaboration IoP NPPD Conference, University of Glasgow, 05/04/11. Development of a simulation package for fragmentation reactions.

Georgi Georgiev CSNSM, Orsay, France Nuclear structure studies at the r-process path Coulomb excitation of odd-A neutron-rich Rb isotopes at REX-ISOLDE.

Beta-decay spectroscopy towards the r-process path Giovanna Benzoni and A.I. Morales-Lopez (INFN - Milano) 1 Outline: * Region “east” of 208 Pb studied.

Entry distributions for fragments produced in deep-inelastic collisions with stable and radioactive beams For the PARIS collaboration W. Królas, M. Kmiecik,

The high-resolution in-flight spectroscopy (HISPEC) project at FAIR

RISING (Rare ISotope INvestigation at GSI): Phases and recent results

Joint LIA COLL-AGAIN, COPIGAL, POLITA WORKSHOP

Georgi Georgiev CSNSM, Orsay, France

Structure of Sb nuclei around 132Sn as a testing ground for realistic shell model interactions Bartłomiej Szpak Institute of Nuclear Physics, Polish Academy.

L. Acosta1, M. A. G. Álvarez2, M. V. Andrés2, C. Angulo3, M. J. G

Maria Kmiecik, Giovanna Benzoni, Daisuke Suzuki

Collective modes excited in inelastic scattering of fast protons studied at Cyclotron Centre Bronowice - (CCB) Maria Kmiecik IFJ PAN Krakow Shapes.

DSSSD for b decay investigations of heavy neutron-rich isotopes

Irina Stefanescu1, O. Ivanov1, J. Van de Walle1, N. Patronis1, D

Decay spectroscopy of neutron- rich Lead isotopes

H.J. Wollersheim, P. Doornenbal, J. Gerl

Production and b half lives of heavy neutron-rich

Rare Isotope Spectroscopic INvestigation at GSI

Coulomb Excitation of 114, 116Sn

Rare Isotope Spectroscopic INvestigation at GSI

Letter of Intent for SPES NUCLEAR MOMENT STUDIES WITH GALILEO

Implantation detector as active stopper Rakesh Kumar, P. Doornenbal, I

Rare Isotope Spectroscopic INvestigation at GSI

Presentation transcript:

g-factor measurement at RISING: The case of 127 Sn Liliya Atanasova University of Sofia

MOTIVATION g-factors  reveal information about the nuclear single particle structure: wave function, spin, magnetic dipole operator, …  unique probe to study changes in nuclear shell structure far from stability spin-alignment - in relativistic fission - for projectile fragmentation beams with Z>30  never experimentally proven !  neutron rich nuclei become accessible for moments studies

B J Fragment beam METHODOLOGY  L = -g  N B/h Measure Larmor precesion and decay I(t) time 2L2L Time Differential Perturbed Angular Distribution  det 1 det 2 t=0 time Field UP Field DOWN 2A 2 B 2 relative phases depend on g-factor

EXPERIMENTAL SET-UP magnet + 8 RISING detectors (top view) Pb-wall + collimator with 7.5 cm to avoid beam scattering Spin-aligned secondary beam selected (S2 slits + position selection in SC21) SC41 SC41 gives t=0 signal for  -decay time measurement SC42 validates the event SC42 Implantation: plexi degrader + 2 mm Cu (annealed) SC43 is a veto (reject non-stopped particle events)

g-RISING setup MW1 MW2 music SC43 veto Al degrader SC41 start slits Pb-wall BEAM 4 clusters with BGO anticompton shields and short collimators 4 clusters with the former RISING shields Electronics: VXI and DGF Stopper: 15mm plexiglas + 2 mm Cu

136 Xe fragmentation at 600 Mev/u Sn Spin-alignment and g-factors of isomers in 127,128 Sn from fragmentation of a 136 Xe beam. Dec Beam: – 136 Xe at 600 MeV/u Target: 9 Be Thickness: 1023 mg/cm 2 Implantation in thick stopper: 15mm plexiglas + 2 mm Cu (cubic lattice structure, without electric field gradients)

Isomers produced in the experiment Z A/Q 128 FIRST RESULTS

Pinston et al. PRC61 (2000) 4.5(3)  s 128 Sn 127 Sn FIRST RESULTS

Field down Field upStatistics 128Sn Field downField upStatistics 127Sn 128 Sn(8 +  7 - ) 127 Sn Sn 127 Sn 128 From S. Lakshmi Counts

Analysis is in progress

1. K.U. Leuven, Belgium: N. Vermeulen, G. Neyens, S. Mallion, M. De Rydt, K. Turzó 2. University of Sofia, Bulgaria: A. Blazhev, R. Lozeva (now Leuven), P. Detistov, L. Atanasova 3. ILL Grenoble, France: G. Simpson 4. CEA, Bruyères le Chatel, France: J.M. Daugas, O. Perru 5. ISKP Bonn, Germany: H. Hübel, S Chmel 6. GSI-Darmstadt, Germany: F. Becker, P. Bednarczyk, L. Caceres, P. Doornenbal, J. Gerl, H. Grawe, M. Górska, I. Kojuharov, N. Kurz, W. Prokopowicz, T. Saitoh, H. Schaffner, H.J. Wollersheim 7. IKP Koeln, Germany: J. Jolie, G. Illie 8. IKHP Rossendorf, Germany: R. Schwengner 9. ATOMKI, Debrecen, Hungary: A. Krasznahorkay 10. The Weizmann Institute, Israel: S. Chamoli, M. Hass, B.S. Nara Singh, Laksmi 11. University of Camerino, Italy: D. Balabanski, G. Lo Bianco, K. Galdnishki, A. Saltarelli, C. Petrache 12. University of Milano, Italy: G. Benzoni, N. Blasi, A. Bracco, F. Camera, B. Million, S. Leoni, O. Wieland 13. IFJ-PAN Krakow, Poland: J. Grébosz, M. Kmiecik, A. Maj, K. Mazurek, W. Méczyński, S. Myalsky, J. Styczen, M. Zieblinski 14. Jaggielonian University, Krakow, Poland: R. Kulessa; 15. Warsaw University, Poland: M. Pfűtzner, A. Korgul 16. NIPNE, Bucharest, Romania: M. Ionescu-Bujor 17. Universidad Autonoma de Madrid, Spain: A. Jungclaus, 18. Univerity of Lund, Sweden: C. Fahlander, R. Hoishen, D. Rudolf 19. ISOLDE-CERN, Switzerland: G. Georgiev 20. University of Surrey, UK: Zs. Podolyàk, P.Regan, J. Walker, PD Paddy, PD Zsolt THE g-RISING COLLABORATION