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The study of alloys using computational methods has been a difficult task due to the usually unknown stoichiometry and local atomic ordering of the different structures experimentally. In order to combat this, first-principles methods have…

材料科学 · 物理学 2021-12-08 Daniel Wines , Kayahan Saritas , Can Ataca

We present a theoretical treatment for the ejection of a secondary electron from a clean metallic surface induced by the impact of a fast primary electron. Assuming a direct scattering between the incident, primary electron and the electron…

介观与纳米尺度物理 · 物理学 2012-02-22 Konstantin A. Kouzakov , Jamal Berakdar

As applied to the numerical simulation of electron transport and scattering processes in semiconductors an efficient model describing the scattering of electrons by the ionized impurities is proposed. On the example of GaAs at 77 and 300 K…

综合物理 · 物理学 2014-03-07 Dmitry Pozdnyakov

The Monte Carlo technique is used to calculate electrical as well as thermoelectric transport properties across thin film heterostructures. We study a thin InGaAsP barrier layer sandwiched between two InGaAs contact layers, when the barrier…

材料科学 · 物理学 2009-11-11 Mona Zebarjadi , Ali Shakouri , Keivan Esfarjani

Electron spectrometry is traditionally challenging due to the difficulty of correctly reconstructing the original energy of the detected electrons. Silicon Drift Detectors, extensively used for X-ray spectrometry, are a promising technology…

In this paper the full and exhaustive algorithm of formation of a smooth molecular Solvent Excluded Surface- SES, and also Solvent Accessible Surface- SAS is presented. These surfaces are a boundary between molecule and solvent. The basis…

化学物理 · 物理学 2013-03-19 Oleg Kupervasser , N. E. Wanner

In this work, a one-dimensional direct implicit particle-in-cell/Monte Carlo collision (PIC/MCC) code is used to study the capacitive discharge driven under 60 MHz rf power in the background gas of pure argon. The electron-induced secondary…

等离子体物理 · 物理学 2023-12-06 Hao Wu , Ran An , Dong Zhong , Wei Jiang , Ya Zhang

Microstructural evolution of NMC secondary particles during the battery operation drives the electrochemical performance and impacts the Li-ion battery lifetime. In this work, we develop an in situ methodology using the FIB/SEM instrument…

Here a new microscopic method is proposed to image and characterize very thin samples like few-layer materials, organic molecules, and nanostructures with nanometer or sub-nanometer resolution using electron beams of energies lower than 20…

仪器与探测器 · 物理学 2016-01-06 Ing-Shouh Hwang

The shell-model Monte Carlo (SMMC) technique transforms the traditional nuclear shell-model problem into a path-integral over auxiliary fields. We describe below the method and its applications to four physics issues: calculations of sdpf-…

核理论 · 物理学 2009-10-31 D. J. Dean , J. A. White

Semiconducting field emitters present some interesting features (e.g.; self-limited electron emission) for both scientific interest and industrial applications. The analysis of experimental results and device design has been restrained by…

A new transmission-type electron multiplier was fabricated from silicon-on-insulator (SOI) material by integrating an array of one dimensional (1D) silicon nanopillars onto a two dimensional (2D) silicon membrane. Primary electrons are…

介观与纳米尺度物理 · 物理学 2009-11-13 Hua Qin , Hyun-Seok Kim , Robert H. Blick

The MIEZE (Modulation of Intensity with Zero Effort) technique is a variant of neutron resonance spin echo (NRSE), which has proven to be a unique neutron scattering technique for measuring with high energy resolution in magnetic fields.…

仪器与探测器 · 物理学 2013-04-22 T. Weber , G. Brandl , R. Georgii , W. Häußler , S. Weichselbaumer , P. Böni

We study the generation and distribution of high energy electrons in cosmic environment and their observational consequences by carrying out the first cosmological simulation that includes directly cosmic ray (CR) particles. Starting from…

天体物理学 · 物理学 2009-11-07 Francesco Miniati , T. W. Jones , Hyesung Kang , Dongsu Ryu

Topological insulators (TIs) exhibit many exotic properties. In particular, a topological magneto-electric (TME) effect, quantized in units of the fine structure constant, exists in TIs. In this Letter, we study theoretically the scattering…

材料科学 · 物理学 2016-05-10 Lixin Ge , Tianrong Zhan , Dezhuan Han , Xiaohan Liu , Jian Zi

Synchrotron emission from runaway electrons may be used to diagnose plasma conditions during a tokamak disruption, but solving this inverse problem requires rapid simulation of the electron distribution function and associated synchrotron…

等离子体物理 · 物理学 2014-03-31 Matt Landreman , Adam Stahl , Tünde Fülöp

Proton radiography is used in various high-energy-density (HED) plasma experiments. In this paper, we describe a Monte Carlo and ray-tracing simulation tool called MPRAD that can be used for modeling the deflection of proton beams in…

等离子体物理 · 物理学 2020-01-08 Yingchao Lu , Hui Li , Kirk A. Flippo , Kwyntero Kelso , Andy Liao , Shengtai Li , Edison Liang

Extreme scattering events (ESEs) are observed as dramatic ($>50\%$) drops in flux density that occur over an extended period of weeks to months. Discrete plasma lensing structures are theorized to scatter the radio waves produced by distant…

星系天体物理 · 物理学 2024-01-19 Kelvin Au , Jason D. Fiege , Adam Rogers

The operation of visible-sensitive gaseous- and, to some extent, vacuum-photomultipliers is critically affected by secondary electrons originating from ion impact on the photocathode. A simple method for indirect measurement of the…

仪器与探测器 · 物理学 2009-09-27 A. Lyashenko , A. Breskin , R. Chechik , T. H. V. T. Dias

In the Alcator C-Mod tokamak, relativistic runaway electron (RE) generation can occur during the flattop current phase of low density, diverted plasma discharges. Due to the high toroidal magnetic field (B = 5.4 T), RE synchrotron radiation…

等离子体物理 · 物理学 2018-11-14 R. A. Tinguely , R. S. Granetz , M. Hoppe , O. Embréus
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