A parallel-beam wavelength-dispersive X-ray emission spectrometer for high energy resolution in-air micro-PIXE analysisIsaković, Kristina (Avtor) Petric, Marko (Avtor) Rajh, Ava (Avtor) Rupnik, Zdravko (Avtor) Ribič, Mirko (Avtor) Bučar, Klemen (Avtor) Pelicon, Primož (Avtor) Pongrac, Paula (Avtor) Bočaj, Valentina (Avtor) Kavčič, Matjaž (Avtor) parallel beamwavelength dispersionX-ray emission spectrometercharacteristicsmicro-PIXE analysisA new parallel-beam wavelength dispersive (PB-WDS) X-ray emission spectrometer was constructed at the external proton beamline at the Microanalytical Centre of the Jožef Stefan Institute in Ljubljana. The spectrometer combines polycapillary X-ray optics for efficient X-ray collection with diffraction on a flat crystal analyzer and achieves energy resolution in the eV range. The whole set-up is enclosed within a He bag to be able to operate in the tender X-ray energy range. The basic design is described together with the results of characterization measurements yielding the main operation characteristics. Finally, an application for the micro-PIXE analysis of biological tissue is demonstrated exploiting both spatial and energy resolution of the new set-up.20232023-11-22 14:40:29Članek v reviji152366sl