K. Riisager, TA8 ISOLDEEURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006 Recent highlights from ISOLDE News from the facility –Users meeting, February.

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Presentation transcript:

K. Riisager, TA8 ISOLDEEURONS PCC-Meeting, Mainz (Germany), April 2006 Recent highlights from ISOLDE News from the facility –Users meeting, February and some physics results –IS367 REX 9 Li beam –IS413 mass measurements –IS427 moments of Mg nuclei –IS429 parity non-conservation –IS439 moments of Cu nuclei

K. Riisager, TA8 ISOLDEEURONS PCC-Meeting, Mainz (Germany), April 2006 Outcome of review (NuPAC meeting) CERN Research Board, December 1, 2005 meeting:

K. Riisager, TA8 ISOLDEEURONS PCC-Meeting, Mainz (Germany), April 2006 HIE-ISOLDE Detailed plans being prepared Upgrade in several dimensions: –REX energy –proton beam intensity –beam quality –new ISOL beams Outside funding: –Wallenberg foundation, 14.5 MSEK (1.5 MEuro) for RILIS upgrade –Leuven, 0.6 MEuro –Manchester+Birmingham, 0.16 MEuro for RFQ cooler

K. Riisager, TA8 ISOLDEEURONS PCC-Meeting, Mainz (Germany), April Zn Nuclides measured in 2005 Nuclides measured in ,120, Cd 126 Xe, 136 Xe 127,128, Sn first doubly charged ions IS413 - ISOLTRAP

K. Riisager, TA8 ISOLDEEURONS PCC-Meeting, Mainz (Germany), April 2006 IS413 – ISOLTRAP, heavy Zn Preliminary evaluation 81 Zn + resonance September/October 2005

K. Riisager, TA8 ISOLDEEURONS PCC-Meeting, Mainz (Germany), April 2006 IS367 – REX, 9 Li on d target 9 Li + 2 H → 8 Li + t 3 MeV/u beam energy two DSSSD telescopes October 2005

K. Riisager, TA8 ISOLDEEURONS PCC-Meeting, Mainz (Germany), April 2006 Parity non-conservation in nuclei: 180m Hf revisited IS429 collaboration - NICOLE H = H 0 + H PNC case of 180m Hf - mixture of 8 - (K = 8) and 8 + (K = 0) states (  E =57 keV) - regular transition strongly suppressed by K = 8 difference Anisotropy of 511 keV transition relative to 444 keV for B-field alternatively up and down ↓ October 2005

K. Riisager, TA8 ISOLDEEURONS PCC-Meeting, Mainz (Germany), April 2006 Procedure: Doppler tuning voltage +/-5kV (strong) NMR field (weak) Guiding field Beam deflector Optical detection Mg beam from ISOLDE, 60keV + Crystal RF coil Scintillator 0 o ++ laser  Scintillator 180 o s N Spin polarisation by optical pumping 31 Mg HFS seen in  -decay asymmetry  decay asymmetry Ion velocity set to highest asymmetry, NMR scan by changing rf frequency Larmor frequency seen as drop in asymmetry Collaps: laser and β-NMR spectroscopy

K. Riisager, TA8 ISOLDEEURONS PCC-Meeting, Mainz (Germany), April 2006 IS427 – heavy Mg isotopes Sigma+ Sigma- I=3/2, 7/2 Almost the same picture September 2005 Measured 33 Mg. HFS found, not yet NMR-peak. Run in 2006 to determine spin and magnetic moment.

K. Riisager, TA8 ISOLDEEURONS PCC-Meeting, Mainz (Germany), April A 1/2 2 S 1/2 2 P 3/2 A 3/2, B 3/2 March 2006 Stable beam test A 1/2 =5865(2), B 3/2 =-28(2) Literature (RF measurements and level mixing) A 1/2 = (5), B 3/2 =-28.8(6) A detection efficiency 1: for the strongest component of the hyperfine structure. Given the yields at ISOLDE this will allow COLLAPS to study copper isotopes up to and including 72 Cu. IS439 - copper isotopes Stable beam test, March 2006