Precision Penning trap mass measurements of rare isotopes produced by projectile fragmentation

• Published in: European physical journal. A, Hadrons and nuclei (Print) Vol. 42; no. 3; pp. 323 - 326
• Main Authors: Schwarz, S., Block, M., Bollen, G., Campbell, C. M., Facina, M., Ferrer, R., Folden III, C. M., Kwiatkowski, A. A., Morrissey, D. J., Pang, G. K., Prinke, A. M., Ringle, R. J., Savory, J., Schury, P. H.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01.12.2009; Springer
• Subjects: Exact sciences and technology; Hadrons; Heavy Ions; Nuclear Fusion; Nuclear Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Regular Article - Experimental Physics; Rare Isotope; Mass Measurement; Rare Isotope Beam; Iron Isotope; Linear Paul Trap; Protons; Ion trap; Multiplets; Mass measurement; Mass spectroscopy; Ion beams; Fragmentation
• ISSN: 1434-6001; 1434-601X
• DOI: 10.1140/epja/i2009-10808-4

The low-energy beam and ion trap facility LEBIT at NSCL/MSU is at present the only facility where precision experiments are performed with stopped rare isotope beams produced by fast-beam fragmentation. LEBIT combines high-pressure-gas stopping with advanced ion manipulation techniques to provide brilliant low-energy beams. So far these beams have mainly been used for mass measurements on short-lived rare isotopes with a 9.4T Penning trap mass spectrometer. Recent examples include 70 m Br , located at the proton dripline, 32 Si and the iron isotopes 63-65 Fe . While the measurement of 32 Si helps to solve a long-standing dispute over the validity of the isobaric multiplet mass equation (IMME) for the A = 32 , T = 2 multiplet, the mass measurements of 65 m,g Fe marked the first time a nuclear isomeric state has been discovered by Penning trap mass spectrometry.