Absolute Measurement of the Relativistic Magnetic Dipole Transition Energy in Heliumlike Argon

作者：Amaro Pedro^*; Schlesser Sophie; Guerra Mauro; Le Bigot Eric Olivier; Isac Jean Michel; Travers Pascal; Santos Jose Paulo; Szabo Csilla I; Gumberidze Alexandre; Indelicato Paul

来源：Physical Review Letters, 2012, 109(4): 043005.

DOI：10.1103/PhysRevLett.109.043005

The 1s2s S-3(1) -> 1s(2) S-1(0) relativistic magnetic dipole transition in heliumlike argon, emitted by the plasma of an electron-cyclotron resonance ion source, has been measured using a double-flat crystal x-ray spectrometer. Such a spectrometer, used for the first time on a highly charged ion transition, provides absolute (reference-free) measurements in the x-ray domain. We find a transition energy of 3104.1605(77) eV (2.5 ppm accuracy). This value is the most accurate, reference-free measurement done for such a transition and is in good agreement with recent QED predictions.

• 出版日期2012-7-27