TY - JOUR
T1 - Mössbauer lineshape distortions due to finite dimensions of source and detector
AU - Flores-Llamas, H.
AU - Zamorano-Ulloa, R.
PY - 1991/6/1
Y1 - 1991/6/1
N2 - The effects of non-collimation of γ-rays and finite dimensions of source and detector upon the isomer shift, line broadening and line height of Mössbauer spectra have been determined by means of a two-dimensional angular distribution f(r, ρ) that weights a Lorentzian lineshape function. This distribution function, along with a few approximations, allow one to calculate, with ease, these Mössbauer spectral parameters. Our expressions, valid for finite dimensions, of source, detector and absorber, generalize previous calculations. As a result, we can say that when a finite source (Rs = 0.4 cm) is 10 cm distance from a detector (Rd = 1.4 cm), the non-collimation of the γ-rays generates distortions of the absorption line that are still within the experimental error.
AB - The effects of non-collimation of γ-rays and finite dimensions of source and detector upon the isomer shift, line broadening and line height of Mössbauer spectra have been determined by means of a two-dimensional angular distribution f(r, ρ) that weights a Lorentzian lineshape function. This distribution function, along with a few approximations, allow one to calculate, with ease, these Mössbauer spectral parameters. Our expressions, valid for finite dimensions, of source, detector and absorber, generalize previous calculations. As a result, we can say that when a finite source (Rs = 0.4 cm) is 10 cm distance from a detector (Rd = 1.4 cm), the non-collimation of the γ-rays generates distortions of the absorption line that are still within the experimental error.
UR - http://www.scopus.com/inward/record.url?scp=44949271676&partnerID=8YFLogxK
U2 - 10.1016/0168-583X(91)95600-I
DO - 10.1016/0168-583X(91)95600-I
M3 - Artículo
SN - 0168-583X
VL - 58
SP - 272
EP - 277
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 2
ER -