Materials Literature
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In order to develop a method to detect low-level oxygen in thin silicon crystals by photoluminescence (PL), a radiative carbon–oxygen center (C center: 0.79 eV) is formed in silicon crystals through carbon introduction by ion implantation. The PL intensity of the C center of the implanted sample is significantly incre…
The chemistry of the rechargeable system Li / LiAlCl 4 · x SO 2 / C (where x = 2.8 to 6 ), which has an open‐circuit voltage of 3.2 V, was investigated and compared with that of Li / LiGaCl 4 · x SO 2 / C , which has an open‐circuit voltage of 2.9 V. Cyclic voltammetry, pressure measurements, elemental analysis, and v…
Other| October 01, 1995 On the thermodynamic data of kaolinite Aley El-Din K. El-Shazly Aley El-Din K. El-Shazly Sultan Qaboos University, Department of Earth Sciences, Al-Khod, Oman Search for other works by this author on: GSW Google Scholar American Mineralogist (1995) 80 (9-10): 1048–1053. https://doi.org/10.2138/…
Crystal structures of rare-earth gallium oxide perovskites RGaO3, (R = La, Nd) have been studied by powder neutron diffraction and X-ray single crystal diffraction. The single crystals were grown by the Czochralski method. From power neutron diffraction we know that lanthanum gallium oxide, LaGaO3, is orthorhombic wit…
A reaction engineering approach was used to design a SAES St 198 metal getter reactor for a glovebox detritiation system. The detritiation system will be used to decontaminate and decommission an Li(D,T)-contaminated glovebox previously used in the U.S. nuclear weapons program. The approach involved development of a m…
The structure of triammonium hydrogen selenate (NH4)3H(SeO4)2 (TAHSe) in the ferroelectric phase TAHSe(V) stable in the temperature range 101–181 K has been solved at 140 K by the single crystal X-ray structure analysis. TAHSe(V) is monoclinic, Cc, a = 10.446(2) A, b = 5.993(1) A, c = 15.800(3) Å, β = 103.99(3)[ddot].…
Dynamically simulating the fuel cycle in a fusion reactor is crucial to developing a better understanding of the safe and reliable operation of this complex system. In this work, we propose a tritium processing system for ITER’S plasma exhaust. The dynamic simulation of this proposed system is then performed with the…
The refractive index dispersion in germanate oxyfluoride glasses of GeO 2 -P 2 O 5 -MF 2 (M=Ca, Zn), which are developed for optical fiber application, is investigated in the 0.4-4 µ m wavelength range by the minimum deviation method. The prepared glasses have a GeO 2 content varying from 80 to 30 mol%. The dispersion…
Specific heat of sodium niobate doped by manganese was measured by an a.c. calorimeter. X-ray test showed the coexistence of the parent phase and the phase induced by Mn dopant. Dielectric susceptibility, measured under applied axial pressure, exhibited step-like jumps in the range of the ferroelastic phase transition…
The form birefringence of subwavelength period gratings can be applied to realize phase-retardation elements. Previous researchers used high-frequency surface relief structures or sinusoidal gratings formed in photoresist to fabricate phase-retardation elements. We present the performance of a volume holographic quart…
Nomenclatural notes are provided for 13 species of Marsdenia R.Br. including a number of taxa formerly included in Gymnema R.Br., Bidaria (Endl.) Decne. and Jasminanthes Blume. New names provided in Marsdenia are M. jasminoides P.I.Forst. (Jasminanthes suaveolens Blume), M. ridleyi P.I.Forst. (Stephanotis parviflora R…
The patented Carver-Greenfield (C-G) Process®, a combination of dehydration and solvent extraction treatment technologies, has a wide range of uses in separating hydrocarbon solvent-soluble hazardous organic contaminants (indigenous oil) from sludges, soils, and industrial wastes. As a result of this treatment, the pr…
The problem of the formation and accumulation of the tritiated heavy and light water wastes produced under operation of the various nuclear facilities is considered. It is shown that the tritium contaminated wastes may have a wide spectrum of isotope concentrations of H:D:T and correlation one with other. Reprocessing…
The mechanisms and products of the reactions which occur during the sintering of SiC with Al2O3 as a sintering aid were analysed. The effects of two sintering atmospheres, namely pressurised CO and Ar gases, on the reaction thermodynamics and reaction products were investigated. Thermodynamically predicted reaction pr…
The nitridation of Zr2Fe has been investigated with respect to its performance as a getter for detritiation of N2 gas streams. At temperatures of 150–550°C, Zr2Fe reacts with N2 at rates dx/dt(in Zr2FeNx) which follow the Arrhenius equation with activation energy Q = 35 kJ/mole. A maximum nitrogen concentration of x =…
The reaction of aqueous solutions of potassium tetracyanozincate, zinc chloride, and pyridine yields crystals of [Zn(py) 2 ][Zn(CN) 4 ], The crystals are orthorhombic, space group Cccm, a = 926.7(4), b = 1340.8(4), c = 1343.3(4) pm. The structure is polymeric and consists of alternate arrays of tetrahedrally and octah…
Other| October 01, 1995 Plumboferrite: New mineralogical data and atomic arrangement Dan Holtstam; Dan Holtstam Uppsala University, Institute of Earth Sciences, Uppsala, Sweden Search for other works by this author on: GSW Google Scholar Rolf Norrestam; Rolf Norrestam Search for other works by this author on: GSW Goog…
Abstract Measurements of electrical conductivity, thermoelectric power, and crystallographic structure of tungsten trioxide are presented. It is found that the predominant charge carriers are electrons related to nonstoichiometry in the oxygen sublattice (WO 3− y ). At y = 0.1 the investigated material undergoes a sem…
The chemical surface modification of poly(tetrafluoroethylene) (PTFE) film was carried out in hydrazine gas photolyzed with ArF excimer laser irradiation. Hydrophilic surface appeared on PTFE film after the laser treatment. The surface was analyzed with a measurement of water contact angle, X-ray photoelectron spectro…
The effective tritium recovery system should be designed to recover tritium from DT reactor blanket sweep gas in a form easy to transfer to the main fuel cycle. The cryosorption method using a porous adsorbent at the temperature of liquid nitrogen is one of the candidate processes for extracting tritium from hydrogen-…