Results 271 to 280 of about 70,723 (326)

One-center trapping of the holes in alkali halide crystals

Physical Review B, 1996
The geometric and electronic structures and electron excitation energies for the one-center hole polaron state and several possible intermediate states corresponding to the hole relaxation in KI are calculated using the static embedded molecular cluster method.
, Shluger, , Gale
openaire   +2 more sources

The radiation induced color centers of the LaBr3:Ce crystal

Radiation Measurements, 2014
Abstract This paper presents study of the gamma-rays induced radiation damage in the LaBr 3 :Ce crystal. The light output and transmittance are measured before and after γ-rays irradiations with an integrated dose up to 10 6  rad for two LaBr 3 :Ce samples.
Zhengguo Li, Hanbo Bao, Yanguo Ding, Hongsheng Shi, Laishun Qin, Kangyin Shu   +5 more
openaire   +1 more source

The X9 catastrophe as the organizing center of crystal rainbows

Physics Letters A, 1993
Abstract The crystal rainbow effect is modeled by the catastrophe theory. It is shown that the 4X9 catastrophe can be treated as the organizing center of the crystal rainbows in the cases of square, rectangular, centered rectangular and hexagonal very thin crystals with one atomic string per primitive cell.
Nešković, Nebojša B., Kapetanović, G., Petrović, Srđan M., Perović, B.   +3 more
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The nature of luminescence centers in NaI:Eu single crystals

Journal of Luminescence, 2015
Abstract The nature of luminescence centers in NaI:Eu scintillation crystals was studied in a wide excitation energy and temperature ranges. Radio- and photoluminescence spectra and TSL curves were measured for crystals with varied activator concentrations.
Shiran, N., Gektin, A., Boiaryntseva, Ia., Vasyukov, S., Gridin, S., Belsky, A.   +5 more
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Exited states of the luminescence centers in tungstate crystals

Journal of Luminescence, 2008
Abstract The electronic structures of luminescence centers in ZnWO 4 , ZnWO 4 :Mo, and ZnWO 4 :Cd crystals are calculated by the configuration interaction method using embedded cluster approach. Dependencies of energies of the ground and excited electronic states of the centers on vibration coordinates are computed.
Nikolaenko, T. N., Hizhnyi, Yu. A., Nedilko, S. G.   +2 more
openaire   +2 more sources

Interaction of Pr3+ optical centers in the Y2SiO5 crystal

Low Temperature Physics, 2002
It is shown on the basis of studies of the optical spectra and luminescence decay of nonequivalent Pr3+ optical centers in the Y2SiO5 crystal that the occupation of the nonequivalent cation sites of the crystal lattice by the activator ions is irregular.
Yu. V. Malyukin, P. N. Zhmurin, A. N. Lebedenko, M. A. Sholkina, B. V. Grinev, N. V. Znamenskiı̆, É. A. Manykin, Yu. V. Orlov, E. A. Petrenko, T. G. Yukina   +9 more
openaire   +1 more source

Uniform 1D Micelles and Patchy & Block Comicelles via Scalable, One-Step Crystallization-Driven Block Copolymer Self-Assembly.

Journal of the American Chemical Society, 2021
Fiber-like (1D) core-crystalline micelles of uniform length can be obtained in protocols involving multiple steps from block copolymers (BCPs) in which crystallization of the core-forming polymer drives the self-assembly.
Shaofei Song, Xuemin Liu, Ehsan Nikbin, J. Howe, Qing Yu, I. Manners, M. Winnik   +6 more
semanticscholar   +1 more source

The Si:Er Crystal: Model and Excitation Mechanism of the Er-O Center

Solid State Phenomena, 1995
Abstract Analysing the electronic structure of silicon crystals, both regular and doped with erbium, we conclude that the erbium ion tends to form bonds with three ligands. The role of oxygen in the passivation of the formed dangling bond is discussed.
D.E. Onopko, N.T. Bagraev, A.I. Ryskin
openaire   +1 more source

Rapid Crystallization and Versatile Metalation of Acetylhydrazone-Linked Covalent Organic Frameworks for Heterogenous Catalysis.

Journal of the American Chemical Society
Covalent organic frameworks (COFs) hold promise in heterogeneous metal catalysis benefiting from their robust, crystalline, and porous structures. However, synthetic challenges persist in prolonged crystallization times, limited metal loading, and ...
Gao-Feng Liu, Zhi-Wei Li, Ziqian Huang, Zhiyuan Zhou, Ying-Xian Li, Anlian Huang, Ziyang Cai, G. Ouyang, Bao-Hui Ye, Yuebiao Zhang   +9 more
semanticscholar   +1 more source

The Crystal Structure of the Photosynthetic Reaction Center from Rhodopseudomonas viridis

1985
The photosynthetic reaction center (RC) from Rhodopseudomonas viridis (R. viridis) was one of the first integral membrane proteins which could be crystallized (Michel, 1982). The crystals turned out to be suitable for X-ray structure analysis at atomic resolution.
J. Deisenhofer, H. Michel
openaire   +1 more source