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He-like argon, chlorine and sulfur spectra measurement from an Electron Cyclotron Resonance Ion Trap

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, , Citation M Trassinelli et al 2007 J. Phys.: Conf. Ser. 58 129 DOI 10.1088/1742-6596/58/1/023

1742-6596/58/1/129

Abstract

We present a new measurement on X-ray spectroscopy of multicharged argon, chlorine and sulfur obtained with the Electron Cyclotron Resonance Ion Trap installed at the Paul Scherrer Institut (Villigen, Switzerland). For this purpose, we used a crystal spectrometer with a spherically bent crystal having an energy resolution of about 0.4 eV. High intensity Kα X-ray spectra were obtained from ions with one 1s hole ranging from almost neutral to heliumlike charge states. In particular we observed the 1s2s3S1 → 1s2 1S0 M1 and 1s2p3P2 → 1s2 1S0 M2 transitions in He-like argon, chlorine and sulfur with unprecedented statistics and resolution. The preliminary analysis presented here describes a new technique to measure precisely energy differences between transitions using a Johann-type Bragg spectrometer. A recent characterization of the spectrometer will allow for a drastic reduction of the systematic errors.

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10.1088/1742-6596/58/1/023