1969 Data Index

Identification of oxide impurity phases and distribution of structural iron in some diagenetic illitic clays as determined by Mössbauer spectroscopy

“…Although similar isomer shifts are observed with some sulphide minerals (e.g. marcasite, Stevens et al, 1983), their presence can be discounted because of the low sulphur content (<0-01~ SO3) of this mineral (Nadeau & Bain, 1986). There are several instances of substantial amounts of tetrahedral Fe(III) being reported in aluminosilicate minerals, e.g.…”

Single-line compounds for 155Gd M$ouml$ssbauer spectroscopy

“…A Mossbauer spectrum using the 86.5 keV transition between the PdEu source and the 1 % Gd absorber is shown in figure 1. The linewidth is 0.80 mm s-l compared to a natural linewidth (2r) of 0.47 mm s-1 (Stevens and Stevens 1970). After correcting for absorber thickness and velocity broadening the effective linewidth is 0.67 mm s-1.…”

Critical review of analytical applications of Mössbauer spectroscopy illustrated by mineralogical and geological examples (IUPAC Technical Report)

“…For a thin absorber, the spectrum shape S(u) can be described as the convolution of a density function f(u) with a Lorentzian function L(u): (28) One of the methods [22][23][24][25][26][27] for obtaining the distribution of effective magnetic flux density or quadrupole splitting is the Window method [22] that uses a Fourier technique. For instance, the distribution of the effective magnetic flux density (also called hyperfine field distribution) (29) can be obtained by fitting the spectrum (B min and B max are the minimum and maximum values of the effective magnetic flux density).…”

“…The new entries of MIS are regularly published in the volumes of Mössbauer Effect Reference and Data Journal (MERDJ) [28]. Currently, one volume of MERDJ consists of 10 issues and a special Index issue, and covers a year of literature search.…”

“…The latter, called MÖSSBAUER MICROS, running in a personal computer environment, offers the references and qualitative information about the Mössbauer parameters found in the literature [28,29].…”