Results 211 to 220 of about 70,524 (259)

Impedance spectroscopic characteristics of Bi2Fe2W3O15 ceramics

Journal of Materials Science: Materials in Electronics, 2013
Bi2Fe2W3O15 was prepared in the polycrystalline form using a standard solid-state reaction technique in order to study its dielectric and electrical properties. The formation of a single-phase compound was confirmed by preliminary X-ray structural studies of the material.
Jyoshna Rout, R. N. P. Choudhary
openaire   +1 more source

Structural and spectroscopic characteristics of synthetic hydrohaematite

Journal of Materials Science, 1985
In order to investigate the identity of water-containing haematite, a method of preparation has been elaborated which leads to samples of hydrohaematite which are “structurally pure” and free of amorphous iron hydroxide. Differential thermal analysis by a lack of endothermic effect at 423 to 473 K on the DTA-curves and by a steady fall of the TG curves
Emilia Wolska, Wojciech Szajda
openaire   +1 more source

Structural, spectroscopic and device characteristics of octithiophene

Synthetic Metals, 1997
Abstract As a step further in the design of efficient organic semiconductors, we report here on the structural, spectroscopic and device characterization of octithiophene (8T), the linear conjugated octamer of thiophene. The X-ray structure and optical spectra under polarized light of the 8T single crystal are described for the first time.
D. Fichou, F. Demanze, G. Horowitz, R. Hajlaoui, M. Constant, F. Gamier   +5 more
openaire   +1 more source

Spectroscopic Characteristics of Neutral Atoms

1985
Numerical data are presented for low-lying atomic terms, oscillator strengths of the most intense optical transitions, radiative lifetimes of low-lying resonant excited states and Rydberg levels of atoms with one valence electron and for typical parameters of atomic metastable states.
Alexandre A. Radzig, Boris M. Smirnov
openaire   +1 more source

Spectroscopic characteristic of conical bubble luminescence

Chinese Physics, 2005
The conical bubble sonoluminescence (CBSL) from the collapse of the bubble was observed in an improved U-tube apparatus. The emitted light energy of a single CBSL flash was measured to be ~ 1.4mJ. The pulse width was about 100?s. The spectra of luminescence were continuum superimposed with the spectral bands from the excited-state C2, CN and CH.
Chen Qi-Dai, Fu Li-Min, Ai Xi-Cheng, Zhang Jian-Ping, Wang Long   +4 more
openaire   +1 more source

Spectroscopic and Solubility Characteristics of Oxidized Soots

Aerosol Science and Technology, 1991
Spectroscopic and solubility 1 studies of reaction products of soot (black carbon) with O3, NO2/N2O4, and SO2 have revealed a relationship between reactivity and product solubility and structure. A remarkably high solubility of ozonated n-hexane soot has its origin in the formation of anhydride and lactone surface structures and their subsequent ...
A. R. Chughtai, J. A. Jassim, J. H. Peterson, D. H. Stedman, D. M. Smith   +4 more
openaire   +1 more source

Analysis of the accuracy characteristics of spectroscopic observations

Journal of Optical Technology, 2006
This paper discusses the main causes of the reduction of the accuracy of spectroscopic observations made with orbital and ground-based telescopes. An observational method is proposed that makes it possible to maintain high spectral resolution during long exposures. The method has been tested under terrestrial conditions.
V. E. Panchuk, M. V. Yushkin
openaire   +1 more source

Spectroscopic and laser characteristics of Ti:Al_2O_3

Journal of the Optical Society of America B, 1986
Spectroscopic measurements and laser performance of Ti:Al2O3 are discussed in detail. Data on absorption and fluorescence spectra and fluorescence lifetime as a function of temperature are presented. Laser characteristics observed with pulsed-dye-laser, frequency-doubled Nd:YAG-laser, and argon-ion-laser pumping are covered and show that nearly quantum-
openaire   +1 more source

Spectroscopic Characteristics of Pentacene In Shpol'skii Matrixes

The Journal of Physical Chemistry A, 2003
Absorption, fluorescence, and fluorescence excitation spectra of pentacene were measured in n-heptane, n-nonane, n-decane, n-dodecane, n-tetradecane, and n-hexadecane at temperature 5 K. We found that the band shift in different matrixes is well described by the intermolecular dispersive interactions with the Onsager cavity radius 5.5 ± 0.8 A. Analysis
M. Banasiewicz, I. Deperasińska, B. Kozankiewicz   +2 more
openaire   +1 more source

Spectroscopic characteristics of GdVO4: Dy3+ crystal

Optical Materials, 2014
Abstract Room temperature optical absorption, emission spectrum of GdVO4: Dy3+ crystal grown by Czochralski (CZ) method were measured and analyzed. Spectral parameters were calculated in the framework of the Judd–Ofelt theory. The GdVO4: Dy3+ crystal showed two intense and relatively broad absorption bands in UV wavelength range centered at 390 and ...
Kaijie Ning, Xiaoming He, Lianhan Zhang, Youchen Liu, Jigang Yin, Peixing Zhang, Guangzhu Chen, Xiangyong Wang, Zhe Chen, Chunjun Shi, Jiaqi Hong, Yin Hang   +11 more
openaire   +1 more source