ISOLDE Workshop and Users meeting 2009

Session

Session 2

18 Nov 2009, 11:10

503/1-001 - Council Chamber (CERN)

47. Precision mass measurements with ISOLTRAP - Past, present, and future

Alexander Herlert (CERN)

18/11/2009, 11:10

The ISOLTRAP Penning trap mass spectrometer has contributed many precise and accurate ground state masses, e.g., for the investigation of nuclear structure, the determination of charge radii, or the study of nucleosynthesis pathways, just to name a few applications. With ISOLTRAP also new techniques were introduced which allow one to make better measurements or to reach more and more exotic...

20. Laser spectroscopy of gallium isotopes using ISCOOL

Bradley Cheal (The University of Manchester, UK)

18/11/2009, 11:40

Laser spectroscopy has been performed on isotopes of gallium at ISOLDE. This work reports the first use of ISCOOL (a gas-filled linear Paul trap) for new laser spectroscopic experiments. Ground state nuclear spin values, magnetic dipole moments, electric quadrupole moments and mean-square charge radii have been extracted for isotope masses in the range A = 67 − 82. An inversion of ground state...

26. Coulomb Excitation of 94,96Kr at ISOLDE: Shape changes and deformation of neutron-rich Krypton Isotopes

Dennis Mücher (Institute for Nuclear Physics, University of Cologne)

18/11/2009, 12:00

Recently the energy of the first 2+ state in the N=60 96Kr nucleus was determined to be 241 keV. This was the first experimental observation of an excited state in this highly exotic nucleus. The 2+1 state in 94Kr is located at 665.5 keV, i.e. E(2+1) drops by more than 400 keV at N=60. This lowering of the 2+1 energy indicates a sharp shape transition behavior which is somewhat similar to that...

34. Nuclear stucture oddities from ISOLTRAP mass measurements

Sarah Naimi (Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse (CSNSM))

18/11/2009, 12:20

The results of two recent ISOLTRAP experiments are discussed in this contribution. (1) Sudden offset of deformation around N=60 (or, Reformation of Kr isotopes around N=60) Whereas canonical nuclear structure decrees a sub-shell closure at N=56, neutron-rich Zr and Sr istopes are known to exhibit sudden and intense deformation instead. This deformation, visible from a deep dent in...

23. Magnetic and quadrupole moments of Cu isotopes with collinear laser spectroscopy

Pieter Vingerhoets (Instituut voor Kern- en Stralingsfysica, K.U.Leuven, Celestijnenlaan 200D B-3001 Leuven, Belgium.)

18/11/2009, 12:40

In this presentation we report on the measurement of the magnetic and quadrupole moments of the Cu isotopes with collinear laser spectroscopy at the Collaps beamline, along with the extraction of the mean square charge radii of the Cu isotope chain. The Cu isotopes have only one proton outside the magic Z=28 shell, and have therefore attracted a lot of nuclear research interest in the past...