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Article Dans Une Revue Physical Review Letters Année : 2007

Ramsey Method of Separated Oscillatory Fields for High-Precision Penning Trap Mass Spectrometry

S. George
  • Fonction : Auteur
S. Baruah
  • Fonction : Auteur
K. Blaum
M. Breitenfeldt
  • Fonction : Auteur
U. Hager
  • Fonction : Auteur
F. Herfurth
  • Fonction : Auteur
A. Herlert
  • Fonction : Auteur
A. Kellerbauer
  • Fonction : Auteur
H.-J. Kluge
  • Fonction : Auteur
Matthieu Kretzschmar
R. Savreux
  • Fonction : Auteur
S. Schwarz
  • Fonction : Auteur
L. Schweikhard
  • Fonction : Auteur
C. Yazidjian
  • Fonction : Auteur

Résumé

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 values. The theoretical description of the extracted ion-cyclotron-resonance line shape is derived and its correctness demonstrated experimentally by measuring the mass of the short-lived 38Ca nuclide with an uncertainty of 1.1×10-8 using the Penning trap mass spectrometer ISOLTRAP at CERN. The mass of the superallowed beta emitter 38Ca contributes for testing the theoretical corrections of the conserved-vector-current hypothesis of the electroweak interaction. It is shown that the Ramsey method applied to Penning trap mass measurements yields a statistical uncertainty similar to that obtained by the conventional technique but 10 times faster. Thus the technique is a new powerful tool for high-precision mass measurements.

Dates et versions

in2p3-00153578 , version 1 (11-06-2007)

Identifiants

Citer

S. George, S. Baruah, Bertram Blank, K. Blaum, M. Breitenfeldt, et al.. Ramsey Method of Separated Oscillatory Fields for High-Precision Penning Trap Mass Spectrometry. Physical Review Letters, 2007, 98, pp.162501. ⟨10.1103/PhysRevLett.98.162501⟩. ⟨in2p3-00153578⟩
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