中文
相关论文

相关论文: Estimation of thermal load on the nozzle base plat…

200 篇论文

Measured values of the brightness temperature of low-frequency synchrotron radiation emitted by powerful extragalactic sources reach 10^11--10^12 K. If some amount of nonrelativistic ionized gas is present within such sources, it should be…

天体物理学 · 物理学 2009-11-06 Sergei Sazonov , Rashid Sunyaev

Motivated by the need to predict plasma density and temperature distributions created in the early stages of high-intensity laser-plasma interactions, we develop a fluid model of plasma expansion into vacuum that incorporates external…

等离子体物理 · 物理学 2026-02-10 Ritwik Sain , Lance Labun , Ou Z. Labun , Bjorn Manuel Hegelich

Thermal voltage noise measurements are performed in order to determine the electron temperature in nanopatterned channels of a GaAs/AlGaAs heterostructure at bath temperatures of 4.2 and 1.4 K. Two narrow two-dimensional (2D) heating…

介观与纳米尺度物理 · 物理学 2013-05-30 Sven S. Buchholz , Elmar Sternemann , Olivio Chiatti , Dirk Reuter , Andreas D. Wieck , Saskia F. Fischer

For high- pressure nucleation experiments in upward diffusion cloud chamber, there is the great deviation of predictions of classical nucleation theory from experimental results; the discrepancy is more than 10 orders of magnitude of…

化学物理 · 物理学 2007-12-13 Sergey P. Fisenko

We model nanoflare heating of extrapolated active-region coronal loops via the acceleration of electrons and protons in Harris-type current sheets. The kinetic energy of the accelerated particles is estimated using semi-analytical and…

太阳与恒星天体物理 · 物理学 2015-06-16 C. Gontikakis , S. Patsourakos , C. Efthymiopoulos , A. Anastasiadis , M. K. Georgoulis

We report on the first measurement of a temperature dependence of the Casimir-Polder force. This measurement was obtained by positioning a nearly pure 87-Rb Bose-Einstein condensate a few microns from a dielectric substrate and exciting its…

原子物理 · 物理学 2007-05-23 J. M. Obrecht , R. J. Wild , M. Antezza , L. P. Pitaevskii , S. Stringari , E. A. Cornell

In the described device, the thermal emissivity or absorptivity of the sample is measured by substitution of the radiative heat flow between two parallel surfaces by thermal output of a heater. Fast measurements of the mutual emissivity for…

仪器与探测器 · 物理学 2016-10-05 Tomas Kralik , Pavel Hanzelka , Vera Musilova , Ales Srnka

The power spectrum of temperature anisotropies induced by hot intracluster gas on the cosmic background radiation is calculated. For low multipoles it remains constant while at multipoles above $l>2000$ it is exponentially damped. The shape…

天体物理学 · 物理学 2009-10-31 F. Atrio Barandela , J. P. Muecket

Thermal balances and complete investigation of air flow along a uniformly heated vertical black thick steel plate (1000 to 8000 W/m\^2) have been obtained by means of a thermoanemometric method and infrared pyrometry. Several physical…

经典物理 · 物理学 2009-03-05 Thierry De Larochelambert

Thermal fusion plasmas initiated by standing whistler waves are investigated numerically by two- and one-dimensional Particle-in-Cell simulations. When a standing whistler wave collapses due to the wave breaking of ion plasma waves, the…

等离子体物理 · 物理学 2020-02-05 Takayoshi Sano , Shinsuke Fujioka , Yoshitaka Mori , Kunioki Mima , Yasuhiko Sentoku

An electron diffraction diagnostics of substrate-free clusters formed in N2-Kr binary jets expanding through a supersonic nozzle into vacuum was carried out. Gas mixtures contained 0.5, 1, and 6 mol.% krypton, the measured average sizes of…

原子与分子团簇 · 物理学 2022-12-06 O. P. Konotop , O. G. Danylchenko

The impact of convective flow due to the temperature gradient between discharge cell electrodes and ambient air was studied for parallel-plate electrode arrangement. It was shown that an increase in temperature during the discharge…

Previous experiments and numerical simulations have revealed that a limited number of two- and three-dimensional particle systems contract in volume upon heating isobarically. This anomalous phenomenon is known as negative thermal expansion…

软凝聚态物质 · 物理学 2025-07-21 Igor Travěnec , Ladislav Šamaj

We present a computationally efficient 1-D seasonal radiative model, with convective adjustment, of Jupiter's atmosphere. Our model takes into account radiative forcings from the main hydrocarbons (methane, ethane, acetylene), ammonia,…

地球与行星天体物理 · 物理学 2020-11-13 Sandrine Guerlet , Aymeric Spiga , Thierry Fouchet , Hugues Delattre

We present a simple and inexpensive design for a multichannel effusive oven nozzle which provides improved atomic beam collimation and thus extended oven lifetimes. Using this design we demonstrate an atomic lithium source suitable for…

We compare the two-dimensional (2D) plasmon dispersion relations for monolayer graphene when the sample is doped with carriers in the conduction band and the temperature $T$ is zero with the case when the temperature is finite and there is…

介观与纳米尺度物理 · 物理学 2017-07-26 Godfrey Gumbs , Antonios Balassis , V. M. Silkin

This paper presents a new model of North Polar Coronal Hole (NPCH) to study dissipation/propagation of MHD waves. We investigate the effects of the isotropic viscosity and heat conduction on the propagation characteristics of the MHD waves…

太阳与恒星天体物理 · 物理学 2023-06-28 E. Devlen , D. Zengin Çamurdan , M. Yardımcı , E. R. Pekünlü

$\textit{Herschel}$ observations of far infrared N$^+$ emission lines have demonstrated that dense plasma, with $n_e\sim30\,{\rm cm^{-3}}$, is ubiquitous in the inner Galactic plane. By combining the information from $\textit{Herschel}$…

星系天体物理 · 物理学 2022-05-03 Marisa Geyer , Mark Walker

The trajectories of dust particles ejected from a comet are affected by solar radiation pressure as a function of their ratios of radiation pressure cross section to mass. Therefore, a study on the orbital evolution of the particles caused…

地球与行星天体物理 · 物理学 2015-06-12 Hiroshi Kobayashi , Hiroshi Kimura , Satoru Yamamoto

(abridged) The heating mechanism at high densities during M dwarf flares is poorly understood. Spectra of M dwarf flares in the optical and near-ultraviolet wavelength regimes have revealed three continuum components during the impulsive…

太阳与恒星天体物理 · 物理学 2015-06-23 Adam F. Kowalski , Suzanne L. Hawley , Mats Carlsson , Joel C. Allred , Han Uitenbroek , Rachel A. Osten , Gordon Holman