Electron excitation by a multi passage laser beam in a plasma

2001-03-01
The limits put by optical guiding. and channel guiding mechanisms on the Laser Wakefield Acceleration (LWFA) technique are imposed on the Resonant Laser Wakefield Acceleration (RLWFA) scheme. Energy gained by the electrons in both schemes are calculated and compared. It has presented that in the RLWFA case, the electrons gain more and more energy after each traversal of the laser pulse and the electrons in a plasma gain about 3 GeV after 10 passages of the laser pulse. They gain 13 GeV when the laser light makes 50 passages and 26 GeV after the laser beam traverses the plasma 100 times. Moreover. the channel guiding mechanism is integrated to the RLWFA scheme and together with diffraction guiding a model for electron acceleration is proposed.
EUROPEAN PHYSICAL JOURNAL D

Suggestions

Active surface passivation for SWIR InGaAs photodetectors
Necati, Işık; Kocaman, Serdar; Department of Aerospace Engineering (2022-1)
This thesis work offers a new method for improving one of the performance parameters in infrared photodetector technology. This method involves suppressing the surface dark current by utilizing a constant E-field on the surface of the photodetector. By interrupting the channel formation on the surface, a significant improvement in the generation-recombination (GR) dark current component is observed. Relatively minor improvements on differential resistance and the shunt component of the dark current are note...
Electrical impedance tomography using the magnetic field generated by injected currents
Birgul, O; Ider, YZ (1996-11-03)
In 2D EIT imaging, the internal distribution of the injected currents generate a magnetic field in the imaging region which can be measured by magnetic resonance imaging techniques. This magnetic field is perpendicular to the imaging region on the imaging region and it can be used in reconstructing the conductivity distribution inside the imaging region. For this purpose, internal current distribution is found using the finite element method. The magnetic fields due to this current is found using Biot-Savar...
Time-domain simulation of directive sources in 3-D digital waveguide mesh-based acoustical models
Hacıhabiboğlu, Hüseyin; Günel Kılıç, Banu (2008-07-01)
Digital waveguide mesh (DWM) models offer a simple, accurate, time-domain, numerical solution of the wave equation. A specific case where such accurate and computationally simple solutions are needed is the acoustical modeling of open or closed volumes. It is possible to model 3-D propagation of waves in enclosures such as rooms using DWM models. Generally, idealized omnidirectional sources are used for obtaining the impulse response in the DWM. However, real-life sound sources are never completely isotropi...
Optimizations of EFIE and MFIE Combinations in Hybrid Formulations of Conducting Bodies
Karaosmanoglu, B.; Onol, C.; Ergül, Özgür Salih (2015-09-11)
We present generalized hybrid surface integral-equation formulations for three-dimensional conductors with arbitrary shapes. The proposed formulations are based on flexible applications of the electric-field integral equation and the magnetic field integral equation with varying combinations on different regions of the given objects. As a proof of concept, we demonstrate hybrid formulations using two-region maps and their parametric analysis. We show that hybrid formulations may enable optimal solutions in ...
Error analysis and testing of DRM for frame cameras
Bettemir, Oe. H.; Karslıoğlu, Mahmut Onur; Friedrich, J. (2007-06-16)
A new Differential Rectification Method (DRM) for frame cameras is proposed by Karslioglu and Friedrich [1] for the generation of orthoimages from monoscopic digital images which map every pixel onto a curved surface of reference frame i.e. WGS84. The ellipsoidal geodetic coordinates, of each pixel are calculated directly under the condition that a precise enough elevation model is available avoiding additional earth curvature corrections after the rectification. In this paper, convergence of the differenti...
Citation Formats
B. Yedierler, “Electron excitation by a multi passage laser beam in a plasma,” EUROPEAN PHYSICAL JOURNAL D, pp. 367–371, 2001, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35771.