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New mass measurement of (6)Li and ppb-level systematic studies of the Penning trap mass spectrometer TITAN

M. Brodeur T. Brunner C. Champagne S. Ettenauer M. Smith A. Lapierre R. Ringle V.L. Ryjkov G. Audi 1 P. Delheij D. Lunney 1 J. Dilling
1 CSNSM SNO
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière : UMR8609
Abstract : The frequency ratio of (6)Li to (7)Li was measured using the TITAN Penning trap mass spectrometer. This measurement resolves a 16-ppb discrepancy between the (6)Li mass of 6.015 122 795(16) u from the Atomic Mass Evaluation 2003 (AME03), which is based on a measurement by JILATRAP, and the more recent measurement of 6.015 122 890(40) u by SMILETRAP. Our measurement agrees with SMILETRAP and a more precise mass value for (6)Li of 6.015 122 889(26) u is presented along with systematic evaluations of the measurement uncertainties. This result makes (6)Li a solid anchor point for future mass measurements on highly charged ions with m/q similar to 6.
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M. Brodeur, T. Brunner, C. Champagne, S. Ettenauer, M. Smith, et al.. New mass measurement of (6)Li and ppb-level systematic studies of the Penning trap mass spectrometer TITAN. Physical Review C, American Physical Society, 2009, 80, pp.044318. ⟨10.1103/PhysRevC.80.044318⟩. ⟨in2p3-00685021⟩

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