Mass and Half-Life Measurements of Stored Exotic Nuclei

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Presentation transcript:

Mass and Half-Life Measurements of Stored Exotic Nuclei Yu.A. Litvinov, Hirschegg 19.01.2006

Present Knowledge of Atomic Masses

Experimental facility at GSI Highly-Charged Ions In-Flight Separation Cocktail or Monoisotopic Beams

Schottky Mass Spectrometry (SMS)

Broad-band Schottky frequency spectra

Measured Mass Surface About 1/3 of all known masses were covered in one experiment Typical mass accuracy 1.5 10-7 Mass resolving power 2 106 reached 275 new masses determined More than 300 improved values Yu.A. Litvinov et al., Nucl. Phys. A756 (2005) 3

Predictive Powers of Mass Models

Two new SMS experiments Identification, Mass and Half-life values in one experiment

Isohronous Mass Spectrometry (IMS)

Time-of-Flight Spectra m/q range is 2.4-2.7

for several mass-to-charge ratios Isochronicity curves for several mass-to-charge ratios

Improved resolving power

238U Fission Fragments M. Matos, PhD Thesis, JLU Giessen 2004

Predictive Powers of Mass Models H. Geissel, Yu.A. Litvinov et al, Nucl. Phys. A746 (2004) 150c

Predictive Powers of Mass Models

The FAIR Project GSI today SIS 100 SIS 300 SIS18 Upgrade Beamlines CBM UNILAC SIS FRS ESR HESR Super NESR CR RESR SIS 100 SIS 300 GSI today SIS18 Upgrade Beamlines CBM Antiproton Production Target Plasma Phys. Atom.Phys. PANDA El.Cooler High En. Expt. PAX/ASSIA Low En. Expt. FLAIR NESR Expts

Isomeric beams, LIfetimes, and MAsses Δv v → 0

Where do we stand now? And where to go?

Direct Mass and Half-life Measurements F. Attallah, G. Audi, K. Beckert, P. Beller, F. Bosch, D. Boutin, T. Buervenich, R.S. Chakrawarthy, L. Chen, D. Cullen, T. Faestermann, M. Falch, B. Franczak, B. Franzke, H.-Geissel, M. Hausmann, M. Hellström, G. Jones, E. Kaza, Th. Kerscher, P. Kienle, O. Klepper, H.-J. Kluge, C. Kozhuharov, K.-L. Kratz, R. Knöbel, K.E.G. Löbner, S.A. Litvinov, Yu.A. Litvinov, Z. Liu, M. Matoš, L. Maier, G. Münzenberg, F. Nolden, Yu.N. Novikov, T. Ohtsubo, A. Ostrowski, A. Ozawa, Z. Patyk, B. Pfeiffer, W.R. Plass, Z. Podolyak, M. Portillo, T. Radon, H. Schatz, C. Scheidenberger, M. Shindo, V. Shishkin, J. Stadlmann, M. Steck, K. Sümmerer, T. Suzuki, M.B. Trzhakovskaya, S. Typel, D.J. Vieira, G. Vorobjev, P.M. Walker, H. Weick, S. Williams, M. Winkler, H. Wollnik, T. Yamaguchi, and The FRS-ESR Collaboration