Reference free, high-precision measurements of transition energies in few electron argon ions

Csilla I. Szabo, Pedro Amaro, Mauro Guerra, Sophie Schlesser, Alexander Gumberidze, José Paulo Santos, Paul Indelicato

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Citations (Scopus)

Abstract

The use of a vacuum double crystal spectrometer, coupled to an electron-cyclotron resonance ion source (ECRIS), allows to measure low-energy x-ray transitions energies in highly-charged ions with accuracies of the order of a few parts per million. We have used this installation to measure the 1s2p 1 P1 → 1s2 1 S0 diagram line and the 1s2s 3 S1 → 1s2 1 S0 forbidden M1 transition energies in helium-like argon, the 1s2s2p 2 Pj → 1s2 2s 2 S1/2 transitions in lithium-like argon and the 1s2s2 2p 1 P1 → 1s2 2s2 1 S0 transition in beryllium-like argon. These transition measurements have accuracies between 2 and 4 ppm depending on the line intensity. Thanks to the excellent agreement between the simulations and the measurements, we were also able to measure the transition width of all the allowed transitions. The results are compared to recent QED and relativistic many-body calculations.

Original languageEnglish
Title of host publicationApplication of Accelerators in Research and Industry - Twenty-Second International Conference
EditorsF. D. McDaniel, B. L. Doyle, G. A. Glass, Y. Wang
PublisherAmerican Institute of Physics
Pages68-72
Number of pages5
ISBN (Print)9780735411487
DOIs
Publication statusPublished - 20 May 2013
Event22nd International Conference on the Application of Accelerators in Research and Industry, CAARI 2012 - Fort Worth, TX, United States
Duration: 5 Aug 201210 Aug 2012

Publication series

NameAIP Conference Proceedings
PublisherAmerican Institute of Physics
Volume1525
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference22nd International Conference on the Application of Accelerators in Research and Industry, CAARI 2012
CountryUnited States
CityFort Worth, TX
Period5/08/1210/08/12

Keywords

  • Highly-charged argon ions
  • QED tests
  • X-ray metrology

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