High-accuracy mass determination of unstable cesium and barium isotopes |
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Institution: | 1. Institute of Modern Physics, Shanxi Normal University, Linfen, 041004, China;2. Radiation Measurement Research Section, National Institute of Radiological Science, Chiba, 263-8555, Japan;3. Research Institute of Nuclear Engineering, University of Fukui, Fukui, 914-0055, Japan |
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Abstract: | Direct mass measurements of short-lived Cs and Ba isotopes have been performed with the tandem Penning trap mass spectrometer ISOLTRAP installed at the on-line isotope separator ISOLDE at CERN. Typically, a mass resolving power of 600 000 and an accuracy of δm ≈ 13 keV have been obtained. The masses of 123,124,126Ba and 122mCs were measured for the first time. A least-squares adjustment has been performed and the experimental masses are compared with theoretical ones, particularly in the frame of a macroscopic-microscopic model. |
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