Radial Density Functions for Liquid Mercury and Lead

Kaplow, Roy; Strong, S. L.; Averbach, B.L.

doi:10.1103/physrev.138.a1336

Cited by 436 publications

(145 citation statements)

References 11 publications

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“…Following their method, the total error in the interference function obtained in this work is esti mated to be about 4%. The uncertainty of the RDFs is probably similar to that of the interference function because the computational errors were minimized by employing the accepted procedures in the Fourier transformation [15]. In addition, it is necessary to take into consideration that the present measurements can be affected by the inherent difficulties arising from the high temperatures over 2000 K. Thus, some reserva tion is attached to the accuracy of the present struc tural information, which is lower than those associ ated with investigations on molten metals and oxides at temperatures below 1273 K [9].…”

Section: Resultsmentioning

confidence: 99%

Direct Determination of the Local Structure in Molten Alumina by High Temperature X-Ray Diffraction

Waseda

Sugiyama

Toguri

1995

Zeitschrift Für Naturforschung A

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Section: Resultsmentioning

confidence: 99%

Direct Determination of the Local Structure in Molten Alumina by High Temperature X-Ray Diffraction

Waseda

Sugiyama

Toguri

1995

Zeitschrift Für Naturforschung A

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“…20 Pair distribution function g͑r͒ obtained by the Fourier transformation of a structure factor S͑Q͒ is subjected to experimental errors. 21 This should be taken into account especially when small effects on g͑r͒ are considered like those in our study. Kaplow et al 21 analyzed the effect of various errors on the pair distribution function and showed that they are manifested as false oscillations at different ranges of g͑r͒ ͑see Fig.…”

Section: Resultsmentioning

confidence: 99%

“…21 This should be taken into account especially when small effects on g͑r͒ are considered like those in our study. Kaplow et al 21 analyzed the effect of various errors on the pair distribution function and showed that they are manifested as false oscillations at different ranges of g͑r͒ ͑see Fig. 3 in Ref.…”

Section: Resultsmentioning

confidence: 99%

Radiation-modified structure of Ge25Sb15S60 and Ge35Sb5S60 glasses

Kavetskyy¹,

Shpotyuk²,

Kaban³

et al. 2008

The Journal of Chemical Physics

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Atomic structures of Ge 25 Sb 15 S 60 and Ge 35 Sb 5 S 60 glasses are investigated in the ␥-irradiated and annealed after ␥-irradiation states by means of high-energy synchrotron x-ray diffraction technique. The first sharp diffraction peak ͑FSDP͒ is detected at around 1.1 Å −1 in the structure factors of both alloys studied. The FSDP position is found to be stable for radiation/annealing treatment of the samples, while the FSDP intensity shows some changes between ␥-irradiated and annealed states. The peaks in the pair distribution functions observed between 2 and 4 Å are related to the Ge-S, Ge-Sb, and Sb-Sb first neighbor correlations and Ge-Ge second neighbor correlations in the edge-shared GeS 4/2 tetrahedra, and S-S and/or Ge-Ge second neighbor correlations in the corner-shared GeS 4/2 tetrahedra. Three mechanisms of the radiation-/annealing-induced changes are discussed in the framework of coordination topological defect formation and bond-free solid angle concepts.

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“…Asprepared glasses were cut to the disk-like specimens and polished to a high optical quality. Then, in order to remove possible mechanical stresses formed after synthesis, the samples were annealed at about 20-30 K below the glass transition temperature [12] (T g = 530 K for Ge 16 As 24 S 60 , 620 K for Ge 24 Co radioisotope capsules. No special measures were taken to prevent uncontrolled thermal annealing of the samples, but maximum temperature in the irradiating camera did not exceed 320-330 K during prolonged -irradiation (about 30 days), providing the absorbed dose power P < 5 Gy/s.…”

Section: Methodsmentioning

confidence: 99%

“…not correlate with any possible interatomic distance of any two glass constituents, most probably this feature (peak, shoulder) is caused by the termination of the experimental data at a final value of the diffraction vector. It is known that false oscillations appear on the pair distribution function near the main peak due to the termination effect [24]. A maximum at r = 3.55-3.60 Å reflects the second coordination sphere.…”

Section: Fig 2 (A) the Pair Distribution Functions G(r)mentioning

confidence: 99%

Radiation/annealing-induced structural changes in GexAs40-xS60 glasses as revealed from high-energy synchrotron X-ray diffraction measurements

Kavetskyy¹

2012

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. Local atomic structure of Ge x As 40x S 60 glasses (x = 16, 24, 32, and 36) has been investigated in the -irradiated (2.41 MGy dose) and annealed after -irradiation states by using the high-energy synchrotron X-ray diffraction technique. The accumulated dose of 2.41 MGy is chosen to be close to the known in literature focal point (2.0 MGy) for the system tested, at which the -irradiation-induced optical (darkening) effect does not depend on the composition. It is established that the first sharp diffraction peak (FSDP) is located at around 1 Е 1 . 1  in the structure factors S(Q) of all the alloys studied. The FSDP position is found to be constant on radiation/annealing treatment, but the intensity of the FSDP reveals changes under irradiation/annealing only for the compositions with x = 16 and 24. The radiation/annealing-induced changes are also observed on the pair distribution functions in the first and second coordination shells for these compounds. Practically invisible effects on the FSDP and pair distribution functions are found for the alloys with x = 32 and 36. The radiation/annealing-induced structural changes detected mainly in the S As  sub-system of the glasses examined are well explainable within the Tanaka approach for interpretation of the photo-induced structural changes and related phenomena in As 2 S 3 chalcogenide glass and similar materials.

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Radial Density Functions for Liquid Mercury and Lead

Cited by 436 publications

References 11 publications

Direct Determination of the Local Structure in Molten Alumina by High Temperature X-Ray Diffraction

Direct Determination of the Local Structure in Molten Alumina by High Temperature X-Ray Diffraction

Radiation-modified structure of Ge25Sb15S60 and Ge35Sb5S60 glasses

Radiation/annealing-induced structural changes in GexAs40-xS60 glasses as revealed from high-energy synchrotron X-ray diffraction measurements

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