High‐accuracy mass measurements on neutron deficient neon isotopes

The atomic masses of the short‐lived nuclides 17Ne and 19Ne have been measured with the triple‐trap mass spectrometer ISOLTRAP at ISOLDE/CERN. The obtained mass excess for both nuclides deviates significantly from the literature value, in the case of 17Ne about 40 keV. The mass value of 17Ne can be applied for a test of the isobaric multiplet mass equation with respect to an isospin T = 3/2 quartet. In addition, both masses can contribute to the data analysis of collinear laser‐spectroscopy experiments where mean‐square nuclear‐charge radii are determined.