Journal articles
Ramsey Method of Separated Oscillatory Fields for High-Precision Penning Trap Mass Spectrometry
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 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.
http://hal.in2p3.fr/in2p3-00153578
Contributor : Dominique Girod <>
Submitted on : Monday, June 11, 2007 - 1:46:04 PM
Last modification on : Friday, November 13, 2020 - 7:54:02 AM
Contributor : Dominique Girod <>
Submitted on : Monday, June 11, 2007 - 1:46:04 PM
Last modification on : Friday, November 13, 2020 - 7:54:02 AM
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