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Showing 1 to 13 of 13 for “"Mossbauer effect"”.
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The Mossbauer effect in iron under very high pressure
The Mossbauer spectrum of Fe57 in iron metal has been measured at pressures up to 240 kilobars at room temperature. Below 133 kilobars the spectrum consists of the normal six lines characteristic of ferromagnetic, body-centered cubic iron. The internal magnetic field at the nucleus H decreases …
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The Mossbauer effect of FE57 on the surface of tungsten
The Mossbuaer effect of Fe 57 on the surface of polycrystalline tungsten has been measured over a temperature range of 80 - 5000 K, and at angles of 0° and 60° with respect to the normal. The M8ssbauer spectra consist of three unresolved lines, the middle one agreeing with measured spectra of Fe 57 …
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Search for the Mössbauer Effect in 109Ag
… has the narrowest linewidth for which the Mossbauer effect has been observed. The 88-keV transition in <sup>109</sup>Ag is obviously a very difficult case for the observation of the Mossbauer effect and provides a stringent test for exploring the practical limits of inhomogeneous line …
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Ultrasonic studies of radiation damage in an aluminum-manganese alloy
… measurements and the interpretation of Mossbauer effect measurements which indicated the defect trapping configuration was the <100> mixed dumbbell. Neither of the two existing models used in the interpretation of other experiments was capable of explaining the data. However, a third …
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Mössbauer studies of putidaredoxin
… of iron and acid labile sulfur. We have used the Mossbauer effect to study the symmetry of the ligands and the electronic configuration of the iron. These studies were facilitated by the removal of the iron and subsequent replacement with iron-57. Our main conclusions are as follows. The sites of …
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A Mossbauer study of divalent iron in silver chloride crystals
… rate has been investigated by means of the Mossbauer effect for divalent iron, initially diffused as S7Co into single crystals of silver chloride. The divalent iron ion substitutes for the monovalent silver ion and associates with a charge compensating positive ion vacancy in a next nearest …
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High pressure Mössbauer studies of magnetic interactions in palladium-cobalt alloys
… fine field has been studied by means of the Mossbauer effect in a series of PdCo alloys consisting of 5, 8, 9, 12, and 15 atomic percent Co, up to 180 kilobarsat 297 oK. The Curie temperatures (Tc) of the 8% and 9% alloys are observed to increase with pressure. A molecular field approximation …
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A Mossbauer study of some industrial applications of organotin compounds.
The technique of high dilution Mossbauer spectroscopy using the isotope Sn has been employed to study the nuclear environment of several organotin compounds having important industrial applications. For each compound studied structural and co-ordination information has been obtained relating to the …
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The Mössbauer effect in surface studies Fe57 on Ag
The Mossbauer effect for atoms located at crystal surfaces is discussed. We show that the Einstein model is valid for describing qualitatively the mean square displacement of lattice atoms. The mean square displacement (Mossbauer recoilless fraction) and mean square velocity (MOssbauer second-order …
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Bonding Characteristics and Devitrification Behavior in Iron-Containing Sodium-Silicate Glasses
… techniques including XRD, AES, SIMS, EXAFS, and Mossbauer effect spectroscopies. On the basis of the XRD analysis, the 20 mol. % Fe(,2)O(,3) glass begins to devitrify at elevated temperatures to form three major crystalline phases, (gamma)-Na(,2)Si(,2)O(,5), (alpha)-Fe(,2)O(,3), and …
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Solid state and nuclear results from Mössbauer studies with I[superscript 129]
"The MIio ssbauer effect of the 26.8 keY transition in I 129 has been studied in a number of iodine compounds. The following results have been obtained: a) The isomeric shifts for the alkali iodides were found to be linearly dependent on the number of 5p holes in the iodine ion. From this …
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The design and construction of a constant acceleration drive system for Mössbauer experiments
… at Heidelberg, Germany. Since that time this effect, not known as the Mössbauer effect, has been studied and confirmed in many laboratories. By 1961 the significance and usefulness of this effect was so widely recognized that Rudolph Mössbauer was awarded the Nobel Prize.</p><p>The new effect …
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Gamma-Ray Optical Studies of ⁷³Ge and ⁵⁷Fe
… This work is a "marriage" between the Borrmann effect, which is a consequence of the dynamical theory of x-ray diffraction, and time-filtering which comes from time-domain Mossbauer spectroscopy.</p> <p>Our experiments involved the search for a nuclear Borrmann effect and the subsequent …