نتایج جستجو برای: particle beam

تعداد نتایج: 281705  

Journal: :Physics of Fluids B: Plasma Physics 1990

Journal: :Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 1989

Journal: :Beilstein Journal of Nanotechnology 2015

1999
T. Clauser V. Stagno

Space-charge dominated beams can induce chaotic behavior on particle trajectories leading to halo formation on the beam spot. This causes particle losses along the beam transportation that must be minimized. The fractional losses must be kept below 10/m. This is a very low threshold to check with standard multiparticle codes. To study this kind of problems a new particle simulation approach wil...

2007
J. Kašparová M. Varady M. Karlický P. Heinzel Z. Moravec

Using 1D NLTE radiative hydrodynamics we model the influence of the particle beams on the Hα line profile treating the beam propagation and the atmosphere evolution self-consistently. We focus on the influence of the non-thermal collisional rates and the return current. Based on our results, we propose a diagnostic method for determination of the particle beam presence in the formation regions ...

Journal: :The Review of scientific instruments 2016
L Zhao J S Kim

An example simulation of Au+ charge breeding using FAR-TECH's integrated EBIS (electron beam ion source) modeling toolset is presented with the emphasis on ion beam injection and extraction. The trajectories of injected ions are calculated with PBGUNS (particle beam gun simulation) self-consistently by including the space charges from both ions and electrons. The ion beam, starting with initial...

2000
Hai-Woong Lee Jaewan Kim

A single-particle entangled state can be generated by illuminating a beam splitter with a single photon. Quantum teleportation utilizing such a single-particle entangled state can be successfully achieved with a simple setup consisting only of linear optical devices such as beam splitters and phase shifters. Application of the locality assumption to a single-particle entangled state leads to Be...

2010
M. Nishiuchi H. Sakaki T. Hori P. R. Bolton K. Ogura A. Sagisaka A. Yogo M. Mori S. Orimo A. S. Pirozhkov I. Daito H. Kiriyama H. Okada S. Kanazawa S. Kondo T. Shimomura M. Tanoue Y. Nakai H. Sasao D. Wakai H. Daido K. Kondo H. Souda H. Tongu A. Noda Y. Iseki T. Nagafuchi K. Maeda K. Hanawa

The concept of a compact ion particle accelerator has become attractive in view of recent progress in laserdriven ion acceleration. We report here the recent progress in the laser-driven proton beam transport at the Photo Medical Research Center (PMRC) at JAEA, which is established to address the challenge of laser-driven ion accelerator development for ion beam cancer therapy.

Journal: :Physical review letters 2009
A Gover E Dyunin

We present a theoretical model for longitudinal collective Coulomb interactions in a charged-particle beam. It suggests a possibility to control and reduce optical frequency shot-noise current in accelerated electron beams. For short interaction lengths, the model describes well coherent optical transition radiation effects observed in SLAC LCLS and in other laboratories. For longer interaction...

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