New mass value for Li7

Sz Nagy, T. Fritioff, M. Suhonen, R. Schuch, K. Blaum, M. Björkhage, I. Bergström

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A high-accuracy mass measurement of Li7 was performed with the SMILETRAP Penning-trap mass spectrometer via a cyclotron frequency comparison of Li3+7 and H2+. A new atomic-mass value of Li7 has been determined to be 7.0160034256(45)u with a relative uncertainty of 0.63 ppb. It has uncovered a discrepancy as large as 14σ (1.1μu) deviation relative to the literature value given in the Atomic-Mass Evaluation AME 2003. The importance of the improved and revised Li7 mass value, for calibration purposes in nuclear-charge radii and atomic-mass measurements of the neutron halos Li9 and Li11, is discussed.

Original languageEnglish
Article number163004
JournalPhysical review letters
Issue number16
Publication statusPublished - May 11 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Nagy, S., Fritioff, T., Suhonen, M., Schuch, R., Blaum, K., Björkhage, M., & Bergström, I. (2006). New mass value for Li7. Physical review letters, 96(16), [163004].