Abstract
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 70mBr , located at the proton dripline, 32Si and the iron isotopes 63-65Fe . While the measurement of 32Si 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 65m,gFe marked the first time a nuclear isomeric state has been discovered by Penning trap mass spectrometry.
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Schwarz, S., Block, M., Bollen, G. et al. Precision Penning trap mass measurements of rare isotopes produced by projectile fragmentation. Eur. Phys. J. A 42, 323–326 (2009). https://doi.org/10.1140/epja/i2009-10808-4
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DOI: https://doi.org/10.1140/epja/i2009-10808-4