Results 91 to 100 of about 487,950 (322)

Radiative opacities for carbon- and oxygen-rich mixtures

The Astrophysical Journal, 1993
Recent OPAL calculations have obtained significant differences in the Rosseland mean opacities compared with earlier Los Alamos work. These new opacities have had a favorable impact on several astrophysical problems, but the efforts have concentrated on hydrogen main-sequence stars or stellar envelopes.
Carlos A. Iglesias, Forrest J. Rogers
openaire   +1 more source

Morphology‐Controlled Silica Nanoparticle Coatings for Transparent Radiative Cooling

Advanced Materials Interfaces, EarlyView.
Transparent radiative cooling coatings are achieved by immobilizing solid and hollow silica spheres on glass. Particle morphology within sub‐monolayer coatings is shown to govern the trade‐off between visible and atmospheric window reflectance. Hollow‐sphere structures enable reduced thermal emission losses while preserving transparency, highlighting ...
Jefferson A. S. Lam, Kishin Matsumori, Maximillian Theis, Alexander Berger, Nicole Böller, Qimeng Song, Matthieu Gresil, Jacek J. Jasieniak, Markus Retsch   +8 more
wiley   +1 more source

Strong, Weak and Merging Lines in Atomic Spectra

Plasma
We present analytical estimates for the maximum line strength in a transition array, as well as for the numbers of strong and weak lines. For that purpose, two main assumptions are used as concerns the line strength distribution.
Jean-Christophe Pain
doaj   +1 more source

Prominent radiative contributions from multiply-excited states in laser-produced tin plasma for nanolithography

Nature Communications, 2020
Extreme ultraviolet (EUV) lithography is currently entering high-volume manufacturing to enable the continued miniaturization of semiconductor devices. The required EUV light, at 13.5 nm wavelength, is produced in a hot and dense laser-driven tin plasma.
F. Torretti, J. Sheil, R. Schupp, M. Basko, M. Bayraktar, R. Meijer, S. Witte, W. Ubachs, R. Hoekstra, O. Versolato, A. Neukirch, J. Colgan   +11 more
semanticscholar   +1 more source

Opacity Studies of Silicon in Radiatively Heated Plasma

The Astrophysical Journal, 2008
Measurements of the opacity of silicon at high temperature and high density are reported. A silicon dioxide foam was heated by eight nanosecond laser beams while a backlighter X-ray source was produced with a picosecond laser. Absorptions of the 1-2 transitions of Si XII through Si VI were observed in the wavelength range from 6.6 to 7.1 A.
H. G. Wei, J. R. Shi, G. Zhao, Yi Zhang, Quan‐Li Dong, Yu‐Tong Li, Shou‐Jun Wang, Jie Zhang, Zuotang Liang, Ji‐Yan Zhang, Tian‐Shu Wen, Wen‐Hai Zhang, Xin Hu, Shen‐Ye Liu, Yong‐Kun Ding, Lin Zhang, Yong‐Jian Tang, Bao‐Han Zhang, Zhi‐Jian Zheng, Hiroaki Nishimura, Shinsuke Fujioka, Fei‐Lu Wang, Hideaki Takabe   +22 more
openaire   +1 more source

Advances in Halide Perovskites for Photon Radiation Detectors

Advanced Materials Technologies, EarlyView.
This work highlights recent progress in perovskite‐based photon radiation detectors, covering organic–inorganic hybrid, inorganic, lead‐free double, and vacancy‐ordered halide perovskites. Their detection performance is compared, material‐specific advantages and challenges are examined, and provides insight into current limitations and future ...
Liangling Wang, Jieqi Wang, Xiaojun Cui, Carsten Ronning   +3 more
wiley   +1 more source

Luminous Blue Variables & Mass Loss near the Eddington Limit

, 2008
During the course of their evolution, massive stars lose a substantial fraction of their initial mass, both through steady winds and through relatively brief eruptions during their Luminous Blue Variable (LBV) phase.
Allard Jan van Marle, Belyanin, Owocki, Stan Owocki   +3 more
core   +1 more source

Coupling of Er3+ ions and Plasmonic Modes in Vertical Nanocavities for Spectral Broadening in Telecom Bands

Advanced Materials Technologies, EarlyView.
Left: Illustration of the glass & nanostructures system and the NIR emission at 1.5 µm, where the colored spheres represent the Er3+ ions within the doped glass. Right: Representation of the Stark splitting of the 4I13/2 and 4I15/2 manifolds of the Er3+, illustrating how the plasmonic modes facilitate the emission from the broader Stark manifold ...
Gaston Lozano Calderón, Víctor Anthony García Rivera, Stéphan Cagnon, Souleymane Toubou Bah, Younès Messaddeq, Euclydes Marega Junior   +5 more
wiley   +1 more source

Synchrotron-driven Instabilities in Relativistic Plasmas of Arbitrary Opacity

The Astrophysical Journal
Recent work has shown that synchrotron emission from relativistic plasmas leads the electron distribution to form an anisotropic ring in momentum space, which can be unstable to both kinetic and hydrodynamic instabilities.
Ian E. Ochs
doaj   +1 more source

Critical ingredients of supernova Ia radiative-transfer modeling [PDF]

, 2014
We explore the physics of SN Ia light curves and spectra using the 1-D non-LTE time-dependent radiative-transfer code CMFGEN. Rather than adjusting ejecta properties to match observations, we select as input one "standard" 1-D Chandrasekhar-mass delayed ...
Blondin, Stephane, Dessart, Luc, Hillier, D. John, Khokhlov, Alexei   +3 more
core   +3 more sources