Numerical evaluation of Mössbauer spectra from thick absorbers

Experimental Techniques

“…As the thickness increases beyond the thin absorber limit, the spectral lines will be broadened. Especially after the recent development of fast Fourier transform algorithms, this method has attracted a great deal of attention and has been further studied [49][50][51][52][53]. Therefore, in this case it is necessary to evaluate accurately the transmission integral TðvÞ, defined in Eq.…”

Liquid Crystalline Octahedral Iron(III) Complexes with 1,4,7-Tris[3,4-bis(decyloxy)benzyl]-1,4,7-triazacyclononane: Thermal Characterization and Mössbauer Investigations of Bridging and Redox Behavior

“…Isomer shifts are referred to metallic iron at RT, the values for linewidth are not calculated in thin absorber approximation but by solving the transmission integral as described previously. [30,31] Thermal treatments were performed in a standard oven under defined atmospheric environments (air, O 2 , or Ar). The Mössbauer spectra of thermally treated samples were obtained after the sample had cooled to RT, been removed from the oven, and been immediately loaded into the He atmosphere of the Mössbauer cryostat.…”

Desarrollo de la técnica Barridos de Efecto Mössbauer: aplicación al estudio de propiedades estructurales y magnéticas

“…Sin embargo la ampliación al caso de n líneas no parece ser trivial 1 . Los métodos que involucran transformada de Fourier [18,27,28] están orientados al análisis espectral. Es decir necesitan del espectro completo para funcionar.…”

“…. exp(τ n )} (6.16) la aplicación de las trazas es directa y se obtienen dos exponenciales para la probabilidad de transmisión 27 ,…”

“…Como mencionamos anteriormente, el haz no polarizado tiene la misma representación en cualquier base ortogonal 27. Los autovalores de la matriz (6.14) son a + √ b 2 + c 2 + d 2 y a − √ b 2 + c 2 + d 2 .…”