Zobrazeno 1 - 10
of 225
pro vyhledávání: '"A. F. Habib"'
Autor:
A. F. Habib, G. G. Manahan, P. Scherkl, T. Heinemann, A. Sutherland, R. Altuiri, B. M. Alotaibi, M. Litos, J. Cary, T. Raubenheimer, E. Hemsing, M. J. Hogan, J. B. Rosenzweig, P. H. Williams, B. W. J. McNeil, B. Hidding
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-10 (2023)
Free-electron lasers (FELs) can produce bright X-ray pulses, but require high quality electron beams. Here the authors show how to generate and preserve ultrabright electron beams from plasma-based accelerators for ultra-compact, high-brightness X-ra
Externí odkaz:
https://doaj.org/article/a7f57858dff0431da669d60389e63aa1
Publikováno v:
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol V-2-2022, Pp 111-118 (2022)
Building detection is an important process in urban applications. In the last decades, 3D point clouds derived from airborne LiDAR have been widely explored. In this paper, we propose a building detection method based on K-means clustering and the om
Externí odkaz:
https://doaj.org/article/b3a5330575a14df793658281a6bad40b
Autor:
F. M. Foerster, A. Döpp, F. Haberstroh, K. v. Grafenstein, D. Campbell, Y.-Y. Chang, S. Corde, J. P. Couperus Cabadağ, A. Debus, M. F. Gilljohann, A. F. Habib, T. Heinemann, B. Hidding, A. Irman, F. Irshad, A. Knetsch, O. Kononenko, A. Martinez de la Ossa, A. Nutter, R. Pausch, G. Schilling, A. Schletter, S. Schöbel, U. Schramm, E. Travac, P. Ufer, S. Karsch
Publikováno v:
Physical Review X, Vol 12, Iss 4, p 041016 (2022)
We present experimental results on a plasma wakefield accelerator (PWFA) driven by high-current electron beams from a laser wakefield accelerator (LWFA). In this staged setup stable and high-quality (low-divergence and low energy spread) electron bea
Externí odkaz:
https://doaj.org/article/3fa23bbdddf44168ae7322c4d4f8890e
Autor:
P. Scherkl, A. Knetsch, T. Heinemann, A. Sutherland, A. F. Habib, O. S. Karger, D. Ullmann, A. Beaton, G. G. Manahan, Y. Xi, A. Deng, M. D. Litos, B. D. O’Shea, S. Z. Green, C. I. Clarke, G. Andonian, R. Assmann, D. L. Bruhwiler, J. Smith, J. R. Cary, M. J. Hogan, V. Yakimenko, J. B. Rosenzweig, B. Hidding
Publikováno v:
Physical Review Accelerators and Beams, Vol 25, Iss 5, p 052803 (2022)
We present an ultracompact plasma-based method to measure spatial and temporal concurrence of intense electron and laser beams nonintrusively at their interaction point. The electron beam couples with a laser-generated seed plasma in dependence of sp
Externí odkaz:
https://doaj.org/article/8a606109a7764d7da329ada04ed92eb8
Autor:
D. Ullmann, P. Scherkl, A. Knetsch, T. Heinemann, A. Sutherland, A. F. Habib, O. S. Karger, A. Beaton, G. G. Manahan, A. Deng, G. Andonian, M. D. Litos, B. D. O'Shea, J. R. Cary, M. J. Hogan, V. Yakimenko, J. B. Rosenzweig, B. Hidding
Publikováno v:
Physical Review Research, Vol 3, Iss 4, p 043163 (2021)
The properties of electron beams obtainable from plasma wakefield accelerators are largely determined by their injection into the plasma wave. Density downramps can facilitate injection of plasma electrons and are realized routinely in laser wakefiel
Externí odkaz:
https://doaj.org/article/a62faaed037943aabc7c546ffcb03547
Autor:
G. G. Manahan, A. F. Habib, P. Scherkl, P. Delinikolas, A. Beaton, A. Knetsch, O. Karger, G. Wittig, T. Heinemann, Z. M. Sheng, J. R. Cary, D. L. Bruhwiler, J. B. Rosenzweig, B. Hidding
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-9 (2017)
Controlling and improving electron beam parameters are crucial for their application in free electron laser and X-ray sources. Here the authors generate quality electron beams with reduced energy spread from plasma accelerators by using a tailored es
Externí odkaz:
https://doaj.org/article/9a78d42a29d04df6a3ee17ee17631441
Autor:
A. S. Elsharkawy, A. F. Habib
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLI-B1, Pp 1213-1219 (2016)
Direct Georeferencing was shown to be an important alternative to standard indirect image orientation using classical or GPS-supported aerial triangulation. Since direct Georeferencing without ground control relies on an extrapolation process only, p
Externí odkaz:
https://doaj.org/article/41b865dd043c43f98952c8d0bb11703a
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XL-1-W4, Pp 263-268 (2015)
The use of Unmanned Aerial Vehicle (UAV) significantly increased in the last years. It is used for several different applications, such as mapping, publicity, security, natural disasters assistance, environmental monitoring, 3D building model generat
Externí odkaz:
https://doaj.org/article/31f5d0ed1cbd40119ffbb18de78362f9
Publikováno v:
International Journal of Human Capital in Urban Management, Vol 7, Iss 3, Pp 309-326 (2022)
BACKGROUND AND OBJECTIVES: Urban pause refers to those places where social interactions, human communication and the presence of people, which is the identity and meaning of the environment, are formed and are a place for citizens to gather. In fact,
Externí odkaz:
https://doaj.org/article/d13f4fe910184c668567057b468e285c
Publikováno v:
Sensors, Vol 22, Iss 17, p 6440 (2022)
Building occlusions usually decreases the accuracy of boundary regularization. Thus, it is essential that modeling methods address this problem, aiming to minimize its effects. In this context, we propose a weighted iterative changeable degree spline
Externí odkaz:
https://doaj.org/article/1d01429b56cd411c9caf39e2aae6ea2a