Results 31 to 40 of about 512,842 (292)

Order-of-magnitude beam current improvement in compact cyclotrons

open access: yesNew Journal of Physics, 2022
There is great need for high intensity proton beams from compact particle accelerators in particle physics, medical isotope production, and materials- and energy-research.
Daniel Winklehner   +6 more
doaj   +1 more source

Advances in the Implementation of the Exactly Energy Conserving Semi-Implicit (ECsim) Particle-in-Cell Method

open access: yesPhysics, 2023
The energy-conserving semi-implicit (ECsim) method presented by the author in 2017, is a particle-in-cell (PIC) algorithm for the simulation of plasmas.
Giovanni Lapenta
doaj   +1 more source

Moments in Particle-in-Cell Simulations [PDF]

open access: yesIEEE Transactions on Nuclear Science, 1985
The moment equations that form the basis of the BEDLAM simulation code can also be used as a check on Particle-In-Cell (PIC) simulations. Moments can be computed as sums over the macroparticles used in the PIC simulations. These moments should satisfy the moment equations if the simulation is valid.
Berz, M.M., Lysenko, W.P.
openaire   +1 more source

Long time simulation of a highly oscillatory Vlasov equation with an exponential integrator [PDF]

open access: yes, 2014
We change a previous time-stepping algorithm for solving a multi-scale Vlasov-Poisson system within a Particle-In-Cell method, in order to do accurate long time simulations.
Frenod, Emmanuel   +2 more
core   +5 more sources

MeV proton acceleration at kHz repetition rate from ultra-intense laser liquid interaction

open access: yesNew Journal of Physics, 2018
Laser acceleration of ions to ≳MeV energies has been achieved on a variety of Petawatt laser systems, raising the prospect of ion beam applications using compact ultra-intense laser technology.
John T Morrison   +8 more
doaj   +1 more source

Arc Effect on Charged Ion Migration in Capillary Zone Electrophoresis Using Hybrid Finite Element and Particle-in-Cell Method

open access: yesJournal of Thermal Science and Technology, 2013
Analytes separated by capillary zone electrophoresis are governed by ion migration. The study proposed a hybrid finite element and particle-in-cell method to simulate ion migration in the cross-channel capillary zone electrophoresis system.
Cheng-I HO, Chen-I HUNG
doaj   +1 more source

Particle-In-Cell Electrostatic Numerical Algorithm [PDF]

open access: yesTransactions on Aerospace Research, 2017
Abstract Existing global models of interaction between the solar wind (SW) and the local interstellar medium (LISM) describe the heliosphere that arises as a result of this interaction. There is a strong motivation to develop a kinetic model using the Particle-in-Cell (PIC) method to describe phenomena which appear in the heliosphere ...
openaire   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Propagation of numerical noise in particle-in-cell tracking

open access: yes, 2015
Particle-in-cell (PIC) is the most used algorithm to perform self-consistent tracking of intense charged particle beams. It is based on depositing macro-particles on a grid, and subsequently solving on it the Poisson equation.
Franchetti, Giuliano, Kesting, Frederik
core   +2 more sources

Quantum radiation reaction in head-on laser-electron beam interaction

open access: yesNew Journal of Physics, 2016
In this paper, we investigate the evolution of the energy spread and the divergence of electron beams while they interact with different laser pulses at intensities where quantum effects and radiation reaction are of relevance.
Marija Vranic   +3 more
doaj   +1 more source

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