satellites of the Kb1;3 emission spectrum of Zn

PAREDES MELLONE, OSCAR ARIEL; BIANCO, LEONARDO MARTIN; CEPPI, SERGIO ANDRÉS; STUTZ, GUILLERMO EDUARDO

Campinas

Congreso; 23º Reunión anual de usuarios; 2013

LNLS

The intensity evolution of the 3d spectator hole satellite of the Kb1;3 emission spectrum of Zn was studied as a function of the excitation energy from threshold to saturation. Emission spectra were measured at the XRD1 beamline using a high resolution X-ray spectrometer in Rowland geometry. Satellite structures associated to 1s3d excitation channels were extracted from the measured spectra by fitting a calculated satellite lineshape, the whole satellite intensity being a fitting parameter. The 1s3d satellite structure was calculated using the GRASP code. Spectrometer resolution efects were included by convoluting with a gaussian response function. The double ionization threshold and the saturation intensity were determined by fitting the Thomas model to the experimental data. The assignment of the satellite structures to 1s3d multielectronic efects was confirmed from the threshold energy of 15.2+-0.4 eV, which is close to the prediction of the Z + 1 model of 17.4 eV. A saturation intensity of 35+-2%, relative to the main peak intensity, was observed. Emission spectra could be accurately fitted considering the Kb1;3 diagram lines, 1s3d satellites along with contributions of KM2;3M4;5 radiative Auger transitions.