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The fluorescence of Y3Al5O12–Ce3+ under cathode-ray excitation consists of an emission band peaking at 550 nm. The decay time is 0.07–0.08 μsec. In view of these properties this phosphor is very suitable for flying-spot cathoderay tubes for color television.
Abstract In the preceding paper Frank & Lawn (1967) investigated theoretically the development of a cone crack in the strongly inhomogeneous Hertzian stress field. The analysis outlined in that paper is now extended to incorporate a sliding motion of the spherical indenter across the specimen surface, assuming a u…
Abstract The fracture of a brittle solid under a spherical indenter is the best studied case of fracture in a strongly inhomogeneous, well defined, stress field. Two principal topics are discussed, the path of a crack in a field of non-uniformly directed stress, and the stability of cracks of various length when the p…
The paramagnetic resonance at $\ensuremath{\nu}=9.3$ Gc/sec has been observed at helium temperatures for ${\mathrm{Ce}}^{3+}$, ${\mathrm{Nd}}^{3+}$, ${\mathrm{Dy}}^{3+}$, ${\mathrm{Er}}^{3+}$, and ${\mathrm{Yb}}^{3+}$ diluted in single crystals of Y${\mathrm{Cl}}_{3}$\ifmmode\cdot\else\textperiodcentered\fi{}6${\mathr…
It is pointed out that the classical two-dimensional harmonic "solid" exhibits an infinite generalized susceptibility at low temperature, although there is no long-range order and no phase transition.Received 15 May 1967DOI:https://doi.org/10.1103/PhysRevLett.19.20©1967 American Physical Society
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Jon Geist, Gerhart J. Kneissl, and V. R. Weidner, "High Purity Powdered CsI as a High Reflectance Infrared Diffuser," Appl. Opt. 6, 1280-1281 (1967) Ex…
Potentiostatic anodic polarisation measurements on brasses (100–60 wt.-% Cu) in 0 ·150 N-NaOH are described and compared with those of the pure components. The inapplicability of current theories on anodic dissolution of homogeneous binary systems is discussed, and a possible mechanism for anodic dissolution is sugges…
Pelletized samples of ZnSO4 and ZnO·2ZnSO4 were decomposed in a stream of N on a recording thermogravimetric balance. Both decomposition reactions are typically topochemical and they follow linear kinetics. The effect of partial pressures of SO3 on the rate of decomposition of ZnO—2ZnSO4suggests that SO3 is strongly a…
Polyester elastomers were prepared by block copolymerization of dimethyl terephthalate (DMT), butanediol (BDO), and polytetramethylene glycol (PTMG). Polyester from DMT and butanediol forms a high-melting hard segment in block copolyester to prevent undue chain slippage when fibers are stretched. High elongation was p…
Temperature dependence of non-ohmic conduction related to acoustoelectric phenomena in tellurium is presented. In the extrinsic region, the threshold field for departure from ohmic law increases as the mobility of holes decreases with raising temperature. In the intrinsic region, however, two types of non-ohmic behavi…
Abstract The effect of volatilization of molecules larger than monomer has been introduced into the solution of the Simha, Wall, and Blatz kinetic equations for the degradation of a high polymer with an initial “most probable” distribution. Equations describing the rate of sample weight and average molecular weight ch…
Abstract Die Darstellung kristalliner Wolframate MeWO 4 (Me = Ba, Ca, Cd, Co, Mg, Mn, Ni, Pb, Sr, Zn) durch Umkristallisieren oder chemische Reaktionen in Schmelzlösungen wird beschrieben. Es werden Angaben zum Bildungsmechanismus, zur Löslichkeit und einigen weiteren Eigenschaften der Wolframate gemacht.
Abstract The rate of homopolymerization of maleimide has been measured in dimethylformamide solution at 60°C. in the presence of azobisisobutyronitrile; it has been compared to that of N‐n ‐butylmaleimide. The overall rates of polymerization are equal to R p = k [M] 1.1–1.2 [In] 0.8 for maleimide, and R p = k '[M] [In…
The general features of heat exchange phenomena are reviewed, and their influence upon corrosion processesin liquids is outlined. The experimental techniques previously used by others are surveyed and new ones based upon an analysis of the problem are suggested. The presentation of data obtained by these methods is il…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe formation of and interrelation between some peroxo binuclear cobalt complexes. IMasayasu. Mori and John A. WeilCite this: J. Am. Chem. Soc. 1967, 89, 15, 3732–3744Publication Date (Print):July 1, 1967Publication History Published online1 May 2002Published inissue 1 July…
Abstract Polyethylene has been grafted with maleic anhydride, as proved by the infrared spectra and the properties of the grafted films. The influence of oxygen and a comparison of the effectiveness of benzoyl peroxide and AIBN showed that polyethylene macroradicals are formed through the decomposition of hydroperoxid…
The influence of sulfur in the range 80 to 1700 ppm on the corrosion resistance of a 14 wt % Cr-14 wt % Ni-balance Fe alloy has been determined in various media. In general, high purity alloys containing sulfur are shown to have excellent general corrosion resistance to oxidizing and nonoxidizing acids when compared w…
Abstract Soil clays containing pedogenically chloritized 2:1 layer silicates, after brief contact at 25C with 2% Na 2 CO 3 (pH 11), developed a proportionately large increment of CEC which was retained after thorough washing with neutral salts (KCl, NaCl) to reduce the pH value below 7. A soil clay from Natal, S. Afri…
The heat-transport properties and heat capacity of UC, UP, and US were determined between room temperature and 600°C. These properties were measured by a transient technique with a laser as a heat pulse source. The thermal conductivity was calculated from the product of the thermal diffusivity, heat capacity, and dens…
Abstract Nuclear magnetic resonance, infrared, and ultraviolet spectroscopy were used to elucidate the structure of oxidized polystyrene. To identify the nuclear magnetic resonance peaks of the degraded polystyrene, deuterated polystyrenes were synthesized and degraded. The primary structure present in the degraded po…