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18 April 2024

» arxiv » nucl-ex/0701027

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Separated Oscillatory Fields for High-Precision Penning Trap Mass Spectrometry
S. George ; S. Baruah ; B. Blank ; K. Blaum ; M. Breitenfeldt ; U. Hager ; F. Herfurth ; A. Herlert ; A. Kellerbauer ; H.J. Kluge ; M. Kretzschmar ; D. Lunney ; R. Savreux ; S. Schwarz ; L. Schweikhard ; C. Yazidjian ;
Date:	19 Jan 2007
Abstract:	Ramsey’s method of separated oscillatory fields is applied to the excitation of the cyclotron motion of short-lived ions in a Penning trap to improve the precision of their measured mass. The theoretical description of the extracted ion-cyclotron-resonance line shape is derived out and its correctness demonstrated experimentally by measuring the mass of the short-lived $^{38}$Ca nuclide with an uncertainty of $1.6cdot 10^{-8}$ using the ISOLTRAP Penning trap mass spectrometer at CERN. The mass value of the superallowed beta-emitter $^{38}$Ca is an important contribution for testing the conserved-vector-current hypothesis of the electroweak interaction. It is shown that the Ramsey method applied to mass measurements yields a statistical uncertainty similar to that obtained by the conventional technique ten times faster.
Source:	arXiv, nucl-ex/0701027
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