Results 11 to 20 of about 40,854 (217)

Luminescent properties of Mg1.99SnO4:0.01Mn2+ phosphors doped with Zn2+

Journal of Materiomics, 2023
In this work, a series of ZnxMg1.99-xSnO4:0.01Mn2+ (x = 0, 0.01, 0.02, 0.03, 0.04) green long afterglow phosphors are prepared by high-temperature solid-phase reaction. The photoluminescence and long afterglow performance of host material doped with Zn2+
Ge Gao, Qiang Li, Pengxiao Hao, Xiao Huang, Hongjie Luo   +4 more
doaj   +1 more source

Temporal dusty plasma afterglow: A review

Frontiers in Physics, 2022
In complex plasmas, dust particles are charged through their interactions with the electrons and ions of the surrounding plasma. In low-temperature laboratory plasmas, dust particles most commonly acquire a negative charge. In particular, in a laboratory
Lénaïc Couëdel, Lénaïc Couëdel
doaj   +1 more source

The very red afterglow of GRB 000418 - further evidence for dust extinction in a GRB host galaxy [PDF]

, 2000
We report near-infrared and optical follow-up observations of the afterglow of the Gamma-Ray Burst 000418 starting 2.5 days after the occurrence of the burst and extending over nearly seven weeks.
A. A. Henden, A. Castro‐Tirado, A. Guarnieri, A. Magazzu, A. Oscoz, A. Piccioni, Aptekar R., B. Stecklum, Beuermann K., C. Bartolini, C. Sanchez‐Fernandez, Chi X., D. Butler, D. H. Hartmann, Dal Fiume D., E. Mazets, E. Palazzi, E. Pian, F. Ghinassi, Goldsten J., Hurley K., Israel G. L., J. A. Munoz, J. Goldsten, J. Gorosabel, J. Greiner, J. M. Castro Ceron, J. Trombka, K. Hurley, K. Noeske, M. Kasper, Masetti N., Meszaros P., N. Masetti, N. Tanvir, O. Fischer, P. M. Vreeswijk, P. Papaderos, Palazzi E., R. Gold, R. Starr, R. Weiss, S. Benetti, S. Golenetskii, S. Hippler, S. Klose, Sdzius J., T. Cline, T. McClanahan, Th. Ott, Wijers R. A. M. J., Zharikov S. V.   +51 more
core   +9 more sources

Green Afterglow of Undoped SrAl₂O₄

Nanomaterials, 2021
Undoped SrAl2O4 nanocrystals were obtained via solution combustion using urea as fuel. The afterglow properties of undoped SrAl2O4 were investigated. Green afterglow from undoped SrAl2O4 is visible to the human eye when the 325 nm irradiation of a helium–
Bao-Gai Zhai, Yuan-Ming Huang
doaj   +1 more source

Visible-Light-Activated Multi-Color Tunable Time-Dependent Afterglow Triggered by Variable Conjugation Effects via the Transformation of Matrix. [PDF]

Adv Sci (Weinh)
Three carbon dots (CDs)‐based composites are synthesized via heat treatment of phenylenediamine derivatives with urea. These composites exhibit time‐dependent afterglow across most of the visible spectrum under visible‐light excitation. The matrix modulation strategy regulates the degree of conjugation in the composites, effectively tuning their ...
Xin H, Huang Y, Zhang W, Li P, Li H.
europepmc   +2 more sources

Inclination Estimates from Off-Axis GRB Afterglow Modelling

Universe, 2021
For gravitational wave (GW) detected neutron star mergers, one of the leading candidates for electromagnetic (EM) counterparts is the afterglow from an ultra-relativistic jet.
Gavin P. Lamb, Joseph J. Fernández, Fergus Hayes, Albert K. H. Kong, En-Tzu Lin, Nial R. Tanvir, Martin Hendry, Ik Siong Heng, Surojit Saha, John Veitch   +9 more
doaj   +1 more source

Afterglow Carbon Dots: From Fundamentals to Applications

Research, 2021
The ability of carbon dots (CDs) to emit afterglow emission in addition to fluorescence in response to UV-to-visible excitation allows them to be a new class of luminescent materials.
Chenxi Peng, Xue Chen, Meiling Chen, Shenci Lu, Yu Wang, Suli Wu, Xiaowang Liu, Wei Huang   +7 more
doaj   +1 more source

Gamma Ray Bursts vs. Afterglows [PDF]

, 1998
When does a GRB stop and its afterglow begin? A GRB may be defined as emission by internal shocks and its afterglow as emission by an external shock, but it is necessary to distinguish them observationally.
Katz, J. I.
core   +2 more sources

Ratiometric afterglow luminescent nanoplatform enables reliable quantification and molecular imaging

Nature Communications, 2022
Afterglow luminescence is promising for non-background molecular imaging in vivo. Here the authors report a ratiometric afterglow luminescent nanoplatform to generate activatable afterglow probes for quantification of specific analytes including NO.
Yongchao Liu, Lili Teng, Yifan Lyu, Guosheng Song, Xiao-Bing Zhang, Weihong Tan   +5 more
doaj   +1 more source

Was the "naked burst" GRB 050421 really naked ? [PDF]

, 2011
A few long gamma-ray bursts such as GRB 050421 show no afterglow emission beyond the usual initial steep decay phase. It has been suggested that these events correspond to "naked" bursts that occur in a very low density environment.
Band, Beloborodov, Berger, Burrows, Chincarini, Daigne, Daigne, Drenkhahn, Eldridge, Evans, Evans, F. Daigne, Falcone, Galama, Gehrels, Genet, Giannos, Godet, Kumar, Lazzati, Medvedev, Nakar, Nousek, O’Brien, Panaitescu, Panaitescu, Panaitescu, Panaitescu, R. Hascoët, R. Mochkovitch, Rees, Roming, Sari, Schady, Spruit, Uhm, van Marle, Vetere, Woosley, Xiao, Z. L. Uhm, Zhang   +41 more
core   +1 more source