High-accuracy mass determination of unstable cesium and barium isotopes

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...

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Bibliographic Details
Published in:Nuclear physics. A 1999-05, Vol.651 (1), p.3-30
Main Authors: Ames, F., Audi, G., Beck, D., Bollen, G., de Saint Simon, M., Jertz, R., Kluge, H.-J., Kohl, A., König, M., Lunney, D., Martel, I., Moore, R.B., Otto, T., Patyk, Z., Raimbault-Hartmann, H., Rouleau, G., Savard, G., Schark, E., Schwarz, S., Schweikhard, L., Stolzenberg, H., Szerypo, J.
Format: Article
Language:English
Subjects:
Atomic masses
Nuclear Experiment
Physics
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Summary: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 122 m Cs 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.
ISSN:0375-9474
1873-1554
DOI:10.1016/S0375-9474(99)00111-6