Results 121 to 130 of about 239,845 (311)

Pepper-pot emittance measurement of laser-plasma wakefield accelerated electrons

, 2009
The transverse emittance is an important parameter governing the brightness of an electron beam. Here we present the first pepper-pot measurement of the transverse emittance for a mono-energetic electron beam from a laser-plasma wakefield accelerator ...
Shanks, R. P., Welsh, G. H., Jaroszynski, D.A., M. P. Anania, Anania, M.P., Jaroszynski, D. A., Welsh, G.H., S. M. Wiggins, Cipiccia, S., Vieux, G., Gallacher, J. G., Gallacher, J.G., M. R. Islam, Ersfeld, B., Issac, R. C., R. P. Shanks, R. C. Issac, Anania, M. P., S. Cipiccia, G. Vieux, G. H. Welsh, Wiggins, S. M., Issac, R.C., J. G. Gallacher, B. Ersfeld, D. A. Jaroszynski, Islam, M. R., Islam, M.R., E. Brunetti, Shanks, R.P., Brunetti, E., Wiggins, S.M.   +31 more
core   +1 more source

On the comparison of three methods of assessing beam quality for broad beam in vitro cell irradiation

, 2020
The interaction of charged particles with living matter has recently attracted increasing interest in the field of biomedical applications such as hadron therapy, radioprotection and space radiation biology.
Wéra, AC, Michiels, C, Jastrzab, M, Bulgheroni, A, Caccia, M, Lucas, S, Heuskin, AC, Riquier, H   +7 more
core   +1 more source

Beam quality deterioration of lasers caused by intracavity beam distortions

Optics Express, 2006
It is well known that beam distortions in a laser cavity can deteriorate the laser's beam quality, but why and exactly how the impact of such distortions can strongly depend on details of the resonator setup has not been studied in detail. This article clarifies the issue with a simple resonant mode coupling model, explaining e.g.
openaire   +2 more sources

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Catch comparison of pulse trawls vessels and a tickler chain beam trawler

, 2011
Comparative fishing trials were conducted in May 2011 (week 19) on commercial beam trawlers fishing with conventional tickler chain beam trawls (on MFV GO4), pulse wings made by HFK-Engineering of Baarn, the Netherlands (MFV TX36), and pulse trawls ...
Nijman, R.R., Vanhalst, K., Marlen, B., van, Vandenberghe, C., Buyvoets, E., Os-Koomen, E., van, Bol, R.A., Groeneveld, K., Wiegerinck, J.A.M., Barneveld, E., van   +9 more
core  

Simulation, design and tests of a diagnostic calorimeter for the spider experiment [PDF]

, 2013
One of the most critical issues for fusion reactors, to be studied in ITER (the prototype that has to prove the feasibility of production of electric energy by fusion), is the generation of sufficient energy to the sustainment of fusion reactions as well
De Muri, Michela
core  

Absorbed Dose Measurements for Teletheraphy Prediction of Superficial Dose Using Halcyon Linear Accelerator [PDF]

Iranian Journal of Medical Physics
Introduction: Measurement of entrance dose and dose at different depth is essential to avoid over dose and under dose of patients. The aim of this study is to verify the variation in the absorbed dose using a water equivalent material.Material and ...
Raymond Njinga, Adeneye Samuel, Akinyode Ajimo, Christopher Olowookere   +3 more
doaj   +1 more source

Effect of beam-beam kick on electron beam quality in first bunched electron cooler

Journal of Physics: Conference Series, 2019
Abstract The low energy RHIC electron cooler (LEReC) currently under commissioning at BNL is going to be the first non-magnetized bunched electron cooler (EC). For successful cooling LEReC requires that the electrons in the cooling section (CS) have small angles with respect to co-propagating ions. Since there is no strong magnetic field
Seletskiy, Sergei, Blaskiewicz, Michael, Fedotov, Alexei, Kayran, Dmitry, Kewisch, Jorg   +4 more
openaire   +1 more source

Robust Spot Melting by 3D Spot Arrangements in Electron Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This work proposes an approach to replace separately melted contours for spot melting in electron beam powder fusion. Adapting the spot arrangements close to the contour combined with stacking yields a comparable surface quality without the inherent challenges of separate contours, as demonstrated, by electron optical images and roughness measurements.
Tobias Kupfer, Lukas Spano, Sebastian Pohl, Carolin Körner, Matthias Markl   +4 more
wiley   +1 more source

Experimental Performance Investigation of Digital Beamforming on Synthetic Aperture Radar

, 2008
In this paper, we present the experimental results of a Digital Beam Forming (DBF) Synthetic Aperture Radar (SAR) performance on the purpose of the High- Resolution Wide-Swath (HRWS) SAR concept.
Junghyo Kim, Younis, Marwan, Wiesbeck, Werner, Werner Wiesbeck, Kim, Junghyo, Marwan Younis   +5 more
core   +1 more source