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Depending on the temperature, the C70 solid crystallizes in several structures. At high temperature (T > 340K), the ellipsoidal C70 molecule rotates freely in all directions and may be treated as a uniform thick spherical shell with inner…

Materials Science · Physics 2007-05-23 Sarbpreet Singh , K. Dharamvir , V. K. Jindal

Heavy element and helium diffusion are both included for the first time in this series of papers on precise solar models, along with improvements in the input data for nuclear reaction rates, the solar luminosity, the solar age, heavy…

High Energy Physics - Phenomenology · Physics 2008-11-26 John N. Bahcall , M. H. Pinsonneault

Injecting charge into dangling bond wires on Si(001) has been shown to induce polarons, which are weakly coupled to the underlying bulk phonons. We present elevated temperature tight binding molecular dynamics simulations designed to obtain…

Materials Science · Physics 2007-05-23 M. Todorovic , A. J. Fisher , D. R. Bowler

The thermo-mechanical properties of silicon make it of significant interest as a possible material for mirror substrates and suspension elements for future long-baseline gravitational wave detectors. The mechanical dissipation in 92um thick…

General Relativity and Quantum Cosmology · Physics 2009-11-11 S. Reid , G. Cagnoli , D. R. M. Crooks , J. Hough , P. Murray , S. Rowan , M. M. Fejer , R. Route , S. Zappe

We demonstrate direct cooling of gaseous formaldehyde (H2CO) to the microkelvin regime. Our approach, optoelectrical Sisyphus cooling, provides a simple dissipative cooling method applicable to electrically trapped dipolar molecules. By…

Atomic Physics · Physics 2016-02-19 Alexander Prehn , Martin Ibrügger , Rosa Glöckner , Gerhard Rempe , Martin Zeppenfeld

The interacting lattice gas model is used to simulate fluid flow through an open percolating porous medium with the fluid entering at the source-end and leaving from the opposite end. The shape of the steady-state concentration profile and…

Statistical Mechanics · Physics 2009-11-07 R. B. Pandey , J. F. Gettrust , D. Stauffer

Our knowledge about the physical processes determining the activity of comets were mainly influenced by several extremely successful space missions, the predictions of theoretical models and the results of laboratory experiments. However,…

Earth and Planetary Astrophysics · Physics 2015-05-27 Bastian Gundlach , Yuri Skorov , Jürgen Blum

A theoretical and experimental analysis is carried out of radiative heat transfer in the coaxial geometry of evacuated tube solar collectors. The gray body approximation implicit in the use of an effective emissivity does not strictly apply…

Applied Physics · Physics 2022-03-29 Mark A. George , Noboru Takamure , David R. McKenzie

The creation of well-thermalized, hot and dense plasmas is attractive for warm dense matter studies. We investigate collisionally induced energy absorption of an ultraintense and ultrashort laser pulse in a solid copper target using…

Plasma Physics · Physics 2020-04-29 Andréas Sundström , Laurent Gremillet , Evangelos Siminos , István Pusztai

Using data from the Southern Galactic Plane Survey (SGPS) we analyze an HI self-absorption cloud centered on l = 318.0 deg, b = -0.5 deg, and velocity, v = -1.1 km/s. The cloud was observed with the Australia Telescope Compact Array (ATCA)…

Astrophysics · Physics 2009-11-10 D. W. Kavars , J. M. Dickey , N. M. McClure-Griffiths , B. M. Gaensler , A. J. Green

Cubic boron phosphide BP has been studied in situ by X-ray diffraction and Raman scattering up to 55 GPa at 300 K in a diamond anvil cell. The bulk modulus of B0 = 174(2) GPa has been established, which is in excellent agreement with our ab…

A molecular dynamics simulation of sublimation of silicene and silicon films of different thikness is performed. It is shown that thiner films sublimate at lower temperatures. The sublimation temperature comes to a saturated value of…

Materials Science · Physics 2023-09-06 Yu. D. Fomin , E. N. Tsiok , V. N. Ryzhov

The structural evolution of laser-excited systems of gold has previously been measured through ultrafast MeV electron diffraction. However, there has been a long-standing inability of atomistic simulations to provide a consistent picture of…

Materials Science · Physics 2024-06-19 J. M. Molina , T. G. White

We show that doubly peaked electric fields are necessary to describe grazing-angle charge collection measurements of irradiated silicon pixel sensors. A model of irradiated silicon based upon two defect levels with opposite charge states…

We report a thorough investigation into the absorptive and dispersive properties of hot caesium vapour, culminating in the development of a simple analytical model for off-resonant Faraday rotation. The model, applicable to all hot alkali…

Atomic Physics · Physics 2015-05-28 Stefan L Kemp , Ifan G Hughes , Simon L Cornish

We performed high-temperature luminescence studies of silicon-vacancy color centers obtained by ion implantation in single crystal diamond. We observed reduction of the integrated fluorescence upon increasing temperature, ascribable to a…

In this paper we present a mathematical model for the electrochemical deposition aimed at the production of inverse opals. The real system consists of an arrangement of sub micrometer spheres, through which the species in an electrolytic…

Chemical Physics · Physics 2013-06-25 P. C. T. D'Ajello , L. Lauck , G. L. Nunes

Low temperature solution combustion synthesis emerges as a facile method for synthesis of functional metal oxides thin films for electronic applications. We study the solution combustion synthesis process of Cu:NiOx using different molar…

Silicon, despite its abundance and high energy density, remains underexplored as a carbon-free fuel, with limited data available on its combustion characteristics. In this work, the combustion behaviour of silicon particles is examined…

Applied Physics · Physics 2025-09-30 Herman , Heng , Hugo Keck , Christian Chauveau , Samuel Goroshin , Jeffrey Bergthorson , Fabien Halter

Interfacial ultrafast electron migration processes are simulated in finite cluster models of dye-sensitized solar cells within a single active electron approach. Initially, three different donor-acceptor $\pi$-conjugated dyes supported on…

Chemical Physics · Physics 2017-07-06 Gunter Hermann , Felix Witte , Jean Christophe Tremblay