Presentation is loading. Please wait.

Presentation is loading. Please wait.

RDT Plunger Lifetime Measurements Workshop, GSI 2007 Workshop, GSI 2007 R. Julin -JYFL On behalf of the JYFL-Köln-Liverpool-Saclay-Munich collaboration.

Published byNathan Porter Modified over 8 years ago

Similar presentations

Presentation on theme: "RDT Plunger Lifetime Measurements Workshop, GSI 2007 Workshop, GSI 2007 R. Julin -JYFL On behalf of the JYFL-Köln-Liverpool-Saclay-Munich collaboration."— Presentation transcript:

1 RDT Plunger Lifetime Measurements Workshop, GSI 2007 Workshop, GSI 2007 R. Julin -JYFL On behalf of the JYFL-Köln-Liverpool-Saclay-Munich collaboration

2 Oblate 2p-2h Spherical 0p-0h Prolate 4p-4h Even-A Pb level levelsystematics Pb

3 Oblate 4p-2h Spherical 0p-0h Prolate 6p-4h Even-A Po level systematics Z = 84 Po

4 Hg level systematics Z = 80 Hg

5 PROLATE OBLATE Kinematic moments of inertia - J (1) Rigid: J (1) ~ 1 + 0.3β Hydrodynamical: J (1) ~ β 2 → Need B(E2), Q t

6 RDT Instrumentation at JYFL JUROGAM 43 Ge+BGO detectors Eff. 4% 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

7 Plunger lifetime RDT measurements JYFL-Köln collaboration

8 Limitations: Need heavy projectile to get high recoil velocity - we used Kr Need a degrader thick enough to get the shift → increase of the Ge – counting rate → drop in RITU transmission due to the small-angle scattering: 108 Pd( 83 Kr,3n) 188 Pb + 2.5mg/cm 2 Au → transmission reduced by 3 The best : 1 mg/cm2 Mg → dE similar to Au, Ge- rate OK, reduction factor of 2 Only the 15 backward angle (158º and 134º) Ge- detectors useful Typically at least 10 distances need to be measured Cross-section limits : 100µb in RDT 1mb in RG But - RDT results in very clean spectra !

9 106 Pd( 83 Kr,3n) 186 Pb RDT Recoil – Alpha - Tagged 108 Pd( 83 Kr,3n) 188 Pb RG Recoil Tagged Plunger measurements

10 W.u. 200(140) 460(160) 510(120) 6(2) 350(60) 440(70) 160(10) 5-12 5-12 W.u. B(E2) │Q t │ J (1) Results for 186 Pb and 188 Pb │Q t │ → │β 2 │ = 0.29(5) for the ”pure” prolate states T.Grahn et al. PRL 97, 062501 (2006)

11 │Q t │ J (1)... for... for 194 Po and 196 Po │Q t │ → │β 2 │ = 0.17(3) for the oblate states - the ground state of 194 Po is a pure oblate 4p-2h state ? oblate 4p-2h state ?

12 │Q t │ J (1)... and for 180 Hg 180 Hg

13 PERSPECTIVES Improved sensitivity in plunger measurements: Digital signal processing → Higher counting rates in plunger measurementsDigital signal processing → Higher counting rates in plunger measurements AGATA demonstrator at backward angles !AGATA demonstrator at backward angles ! Recoil-shadow electron measurements Coulex - measurements at REXISOLDE needed

Download ppt "RDT Plunger Lifetime Measurements Workshop, GSI 2007 Workshop, GSI 2007 R. Julin -JYFL On behalf of the JYFL-Köln-Liverpool-Saclay-Munich collaboration."

Similar presentations

Present and future limitations of SHE in-beam experiments R-D Herzberg.

Present and future limitations of SHE in-beam experiments R-D Herzberg.
A typical case of SD structure at high spin in 194Hg! sig_tot = 1barn Atarget = 186, thikness = 0.5mg/cm 2 beam intensity = 5pnA, N = 3.12. 10 10 which.

A typical case of SD structure at high spin in 194Hg! sig_tot = 1barn Atarget = 186, thikness = 0.5mg/cm 2 beam intensity = 5pnA, N = which.
Decay- and in-beam spectroscopy of heavy nuclei at the proton dripline Triple-shape coexistence.

Decay- and in-beam spectroscopy of heavy nuclei at the proton dripline Triple-shape coexistence.
Future prospects and needs for nuclear structure studies with high intensity stable beams.

Future prospects and needs for nuclear structure studies with high intensity stable beams.
March 1, 2013GRETINA workshop 20131 Coulomb excitation of even 108-112 Ru and 104-108 Mo isotopes Juho Rissanen Nuclear Structure Group, Lawrence Berkeley.

March 1, 2013GRETINA workshop Coulomb excitation of even Ru and Mo isotopes Juho Rissanen Nuclear Structure Group, Lawrence Berkeley.
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.

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.
Evolution of nuclear shape in the light Radon isotopes Andrew Robinson, David Jenkins, Stewart Martin-Haugh University of York Jarno Van De Walle CERN.

Evolution of nuclear shape in the light Radon isotopes Andrew Robinson, David Jenkins, Stewart Martin-Haugh University of York Jarno Van De Walle CERN.
Pete Jones University of Jyväskylä INTAG Workshop GSI, Germany 24-25 May 2007 Status of digital electronics at JYFL Pete Jones Department of Physics University.

Pete Jones University of Jyväskylä INTAG Workshop GSI, Germany May 2007 Status of digital electronics at JYFL Pete Jones Department of Physics University.
The LISA spectrometer David O’Donnell STFC Daresbury Laboratory.

The LISA spectrometer David O’Donnell STFC Daresbury Laboratory.
12 th January 2011 PRESPEC Decay Physics Workshop University of Brighton 2011 High-spin states feeding seniority isomers in the heaviest N=82 isotones.

12 th January 2011 PRESPEC Decay Physics Workshop University of Brighton 2011 High-spin states feeding seniority isomers in the heaviest N=82 isotones.
The evolution of nuclear structure in light osmium isotopes; gamma ray spectroscopy of 163 Os and 165 Os Mark Drummond.

The evolution of nuclear structure in light osmium isotopes; gamma ray spectroscopy of 163 Os and 165 Os Mark Drummond.
Spectroscopy and lifetime measurements at ReA12 Hiro IWASAKI (NSCL/MSU) 7/12/2014Recoil Separator for ReA12 workshop1.

Spectroscopy and lifetime measurements at ReA12 Hiro IWASAKI (NSCL/MSU) 7/12/2014Recoil Separator for ReA12 workshop1.
A LaBr3 Fast Timing Array of NUSTAR detectors at JYFL

A LaBr3 Fast Timing Array of NUSTAR detectors at JYFL
New Isomers from Fast Fragmentation Reactions Dr. Paddy Regan Dept. of Physics University of Surrey, Guildford, GU2 7XH, UK

New Isomers from Fast Fragmentation Reactions Dr. Paddy Regan Dept. of Physics University of Surrey, Guildford, GU2 7XH, UK
Superheavy Element Studies Sub-task members: Paul GreenleesJyväskylä Rodi Herzberg, Peter Butler, RDPLiverpool Christophe TheisenCEA Saclay Fritz HessbergerGSI.

Superheavy Element Studies Sub-task members: Paul GreenleesJyväskylä Rodi Herzberg, Peter Butler, RDPLiverpool Christophe TheisenCEA Saclay Fritz HessbergerGSI.
Spectroscopy of exotic nuclei Lecture 4

Spectroscopy of exotic nuclei Lecture 4
Spin alignment and g-factor measurements with RISING Maria Kmiecik IFJ PAN NZ22 IFJ PAN Review 5-6 Feb. 2009 IFJ PAN Review 5-6 Feb. 2009.

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
UNIVERSITY OF JYVÄSKYLÄ Lifetime measurements probing triple shape coexistence in 175 Au Tuomas Grahn Department of Physics University of Jyväskylä The.

UNIVERSITY OF JYVÄSKYLÄ Lifetime measurements probing triple shape coexistence in 175 Au Tuomas Grahn Department of Physics University of Jyväskylä The.
UNIVERSITY OF JYVÄSKYLÄ Results from the first tests with the SPEDE spectrometer Philippos Papadakis ISOLDE Workshop and Users Meeting 2014.

UNIVERSITY OF JYVÄSKYLÄ Results from the first tests with the SPEDE spectrometer Philippos Papadakis ISOLDE Workshop and Users Meeting 2014.
N. Saito The RISING stopped beam physics meeting Technical status of RISING at GSI N. Saito - GSI for the RISING collaboration Introduction Detector performance.

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

Similar presentations

Ads by Google