High Resolution He-like Argon And Sulfur Spectra From The PSI ECRIT

Details High Resolution He-like Argon And Sulfur Spectra From The PSI ECRIT High Resolution He-like Argon And Sulfur Spectra From The PSI ECRIT

2004-10-26

arxiv.org/abs/physics/0410250v1

ECR Ion Sources 2004, Etats-Unis d'Amerique (2004)

Physics

Atomic Physics

Scientific paper

10.1063/1.1893371

We present new results on the X-ray spectroscopy of multicharged argon, sulfur and chlorine obtained with the Electron Cyclotron Resonance Ion Trap (ECRIT) in operation at the Paul Scherrer Institut (Villigen, Switzerland). We used a Johann-type Bragg spectrometer with a spherically-bent crystal, with an energy resolution of about 0.4 eV. The ECRIT itself is of a hybrid type, with a superconducting split coil magnet, special iron inserts which provides the mirror field, and a permanent magnetic hexapole. The high frequency was provided by a 6.4 GHz microwave emitter. We obtained high intensity X-ray spectra of multicharged F-like to He-like argon, sulfur and chlorine with one 1s hole. In particular, we observed the $1s2s^{3}S_1 \to 1s^2^{1}S_0 M1$ and $1s2p^{3}P_2 \to 1s^2^{1}S_0 M2$ transitions in He-like argon, sulfur and chlorine with unprecedented statistics and resolution. The energies of the observed lines are being determined with good accuracy using the He-like M1 line as a reference.

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