Time-separated oscillatory fields for high-precision mass measurements on short-lived Al and Ca nuclides

High-precision Penning trap mass measurements on the stable nuclide 27Al as well as on the short-lived radionuclides 26Al and $^{38,39}$Ca have been performed by use of radiofrequency excitation with time-separated oscillatory fields, i.e. Ramsey's method, recently extended to Penning trap mass...

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Bibliographic Details
Published in:Europhysics letters 2008-06, Vol.82 (5), p.50005-50005 (6)
Main Authors: George, S, Audi, G, Blank, B, Blaum, K, Breitenfeldt, M, Hager, U, Herfurth, F, Herlert, A, Kellerbauer, A, Kluge, H.-J, Kretzschmar, M, Lunney, D, Savreux, R, Schwarz, S, Schweikhard, L, Yazidjian, C
Format: Article
Language:English
Subjects:
07.75.+h
21.10.Dr
27.30.+t
Nuclear Experiment
Physics
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Summary:High-precision Penning trap mass measurements on the stable nuclide 27Al as well as on the short-lived radionuclides 26Al and $^{38,39}$Ca have been performed by use of radiofrequency excitation with time-separated oscillatory fields, i.e. Ramsey's method, recently extended to Penning trap mass measurements of radioactive isotopes. A comparison with the conventional method of a single continuous excitation demonstrates the advantage of up to ten times shorter measurements. The new mass values of $^{26,27}$Al are compared to literature values and clarify conflicting data in this mass region. In addition, the resulting mass values of the superallowed β-emitter 38Ca as well as of the ground state of the β-emitter 26Alm confirm previous measurements.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/82/50005