Se presenta un estudio de alta resolución del espectro de emisión fluorescente Kα1,2 de Mn. El espectro medido presenta asimetrías hacia el lado de bajas energías de los picos Kα1 y Kα2. La interpretación del espectro experimental se realizó mediante cálculos multiconfiguracionales de estructura atómica relativista, realizados con el código GRASP2K. Se utilizó un modelo de cuatro picos para representar estructuras de asimetría presentes tanto en el espectro experimental como en el espectro calculado. Estas asimetrías se pueden correlacionar con líneas de diagrama de multipletes atómicos, originadas por la presencia de electrones desapareados en el nivel de energía 3d. Se evidenció además, a diferencia de trabajos previos, la presencia de estructuras satélites las cuales se asociaron a transiciones Auger radiativas KLIIMIV,V y KLIIIMIV,V. Palabras clave: espectroscopía de rayos x, fluorescencia de rayos x, estructura atómica, efecto Auger radiativo. A high resolution study of the Kα1,2 fluorescence emission x-ray spectrum of Mn is presented. The measured spectrum exhibits asymmetries in the low energy tail of the Kα1 and Kα2 emission peaks. Atomic structure multiconfigurational calculations were carried out with the code GRASP2K in order to explain the experimental spectrum. A model of four peaks was used to describe the asymmetry structures both in experimental and calculated spectra. Such asymmetries are correlated to diagram lines from atomic multiplets, which are originated by unpaired electrons in the 3d atomic level. In addition, unlike previous work, satellite structures, assigned to radiative Auger transitions KLIIMIV,V y KLIIIMIV,V could be observed in the measured spectrum.
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