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

• Published in: arXiv.org
• Main Authors: Martino Trassinelli, Biri, Sandor, Boucard, Stephane, Covita, Daniel S, Gotta, Detlev, Leoni, Bruno, Hirtl, Albert, Indelicato, Paul, Eric-Olivier Le Bigot, Joaquim M F Dos Santos, Simons, Leopold M, Lucas Stingelin, Joao F C A Veloso, Wasser, Alfred, Zmeskal, Johann
• Format: Paper
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 26.10.2004
• Subjects: Argon; Chlorine; Coils; Cyclotron resonance; Electron cyclotron resonance; Emitters; Emitters (electron); Energy resolution; Inserts; Ions; Spectral emittance; Spectrum analysis; Sulfur; X ray spectra
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.0410250

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.