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The use of gas expansions to generate atomic or molecular beams has become a standard technique in nuclear and hadron physics for the production of polarized ion beams and gas targets. A direct simulation Monte Carlo method was used to…

Atomic Physics · Physics 2009-01-09 Alexander Nass , Erhard Steffens

Extensive simulations of a portable radiation detecting system have been performed in order to explore important performance parameters. The instrument consists of a stack of ten detecting layers made of pixelated Cadmium Telluride (CdTe)…

Instrumentation and Detectors · Physics 2011-01-21 K. Karafasoulis , K. Zachariadou , S. Seferlis , I. Kaissas , C. Lambropoulos , D. Loukas , C. Poritiriadis

Many large scale numerical simulations of astrophysical plasmas must also reproduce the hydrogen ionization and the resulting emission spectrum, in some cases quite accurately. We describe a compact model hydrogen atom that can be readily…

Astrophysics · Physics 2009-10-28 Jason W. Ferguson , Gary J. Ferland

For photon virtualities of $Q^2 \gsim 20 {\rm GeV}^2$, the results of the (hard Pomeron) fit in the tensor-Pomeron model in terms of the variables $Q^2$ and the virtual-photon-proton energy squared, $W^2$, provide empirical evidence for the…

High Energy Physics - Phenomenology · Physics 2021-07-14 Dieter Schildknecht

Electron Multiplying CCDs (EMCCDs) are used much less often than they might be because of the challenges they offer camera designers more comfortable with the design of slow-scan detector systems. However they offer an entirely new range of…

Instrumentation and Methods for Astrophysics · Physics 2015-06-05 Craig Mackay , Keith Weller , Frank Suess

We investigate and quantify salient features of the charge distributions on viral capsids. Our analysis combines the experimentally determined capsid geometry with simple models for ionization of amino acids, thus yielding the detailed…

Biological Physics · Physics 2012-10-23 Anze Losdorfer Bozic , Antonio Siber , Rudolf Podgornik

This work introduces an advanced technique optimized for detecting photons generated by charged particles, leveraging Skipper-CCD sensors. By analyzing background sources and detection efficiencies, the technique achieves strong agreement…

Instrumentation and Methods for Astrophysics · Physics 2025-03-10 Guillermo Fernandez Moroni , Fernando Chierchie , Lucas Giardino , Javier Tiffenberg , Juan Estrada

We propose an efficient algorithm for the recently published electron/hole-transfer Dynamical-weighted State-averaged Constrained CASSCF (eDSC/hDSC) method studying charge transfer states and D$_1$-D$_0$ crossings for systems with odd…

Computational Physics · Physics 2024-09-24 Tian Qiu , Joseph E. Subotnik

This article is an attempt to provide a self consistent picture, including existence analysis and numerical solution algorithms, of the mathematical problems arising from modeling photocurrent transients in Organic-polymer Solar Cells…

Numerical Analysis · Mathematics 2012-06-29 Carlo de Falco , Riccardo Sacco , Maurizio Verri

The purpose of this study is to provide data for the primitive model of the electrical double layer, where ions are modeled as charged hard spheres, the solvent as an implicit dielectric background (with dielectric constant $\epsilon=…

Soft Condensed Matter · Physics 2017-12-01 Mónika Valiskó , Tamás Kristóf , Dirk Gillespie , Dezső Boda

An alternative approach to ultrasound computed tomography (USCT) for medical imaging is proposed, with the intent to (i) shorten acquisition time for devices with a large number of emitters, (ii) eliminate the calibration step, and (iii)…

Medical Physics · Physics 2022-01-25 Ines Elisa Ulrich , Christian Boehm , Andrea Zunino , Cyrill Bösch , Andreas Fichtner

CCD sensors do not deliver a perfect image of the light they receive. Beyond the well known linear image smearing due to diffusion of charges during their drift towards the pixel wells, non-linear effects are at play in these sensors. We…

Instrumentation and Methods for Astrophysics · Physics 2015-06-11 Pierre Astier

Existing solid state drive (SSD) simulators unfortunately lack hardware and/or software architecture models. Consequently, they are far from capturing the critical features of contemporary SSD devices. More importantly, while the…

Hardware Architecture · Computer Science 2017-09-15 Myoungsoo Jung , Jie Zhang , Ahmed Abulila , Miryeong Kwon , Narges Shahidi , John Shalf , Nam Sung Kim , Mahmut Kandemir

We tackle the problem of producing realistic simulations of LiDAR point clouds, the sensor of preference for most self-driving vehicles. We argue that, by leveraging real data, we can simulate the complex world more realistically compared…

Computer Vision and Pattern Recognition · Computer Science 2020-06-17 Sivabalan Manivasagam , Shenlong Wang , Kelvin Wong , Wenyuan Zeng , Mikita Sazanovich , Shuhan Tan , Bin Yang , Wei-Chiu Ma , Raquel Urtasun

Symmetry is fundamental to physical laws across different scales$\unicode{x2014}$from spacetime structure in general relativity to particle interactions in quantum field theory. Local symmetries, described by gauge theories, are central to…

Quantum Physics · Physics 2025-10-13 Abhijit Chakraborty , Randy Lewis , Christine A. Muschik

We apply the Charge Simulation Method (CSM) in order to compute the logarithmic capacity of compact sets consisting of (infinitely) many "small" components. This application allows to use just a single charge point for each component. The…

Numerical Analysis · Mathematics 2023-05-10 Jörg Liesen , Mohamed M. S. Nasser , Olivier Sète

Sedimentation-diffusion equilibrium density profiles of suspensions of charge-stabilized colloids are calculated theoretically and by Monte Carlo simulation, both for a one-component model of colloidal particles interacting through pairwise…

Soft Condensed Matter · Physics 2013-05-29 Aldemar Torres , Alejandro Cuetos , Marjolein Dijkstra , Rene van Roij

When the problem of boson sampling was first proposed, it was assumed that little or no photon collisions occur. However, modern experimental realizations rely on setups where collisions are quite common, i.e. the number of photons $M$…

Quantum Physics · Physics 2023-02-08 M. Umanskii , A. N. Rubtsov

Reciprocal space methods for solving Poisson's equation for finite charge distributions are investigated. Improvements to previous proposals are presented, and their performance is compared in the context of a real-space density functional…

Computational Physics · Physics 2007-05-23 Alberto Castro , Angel Rubio , M. J. Stott

To increase the scientific output of particle physics experiments, upgrades are underway at all major accelerator facilities to significantly improve the luminosity. Consequently, the solid-state detectors used in the experiments will…

Instrumentation and Detectors · Physics 2024-07-25 Jürgen Burin , Christopher Hahn , Philipp Gaggl , Andreas Gsponer , Simon Waid , Thomas Bergauer