en Enhancement of Electron Acceleration in Vacuum by Using an Obliquely Incident Chirped Laser Pulse تخصصی Special پژوهشي Research We consider a linearly polarized frequency-chirped Hermit-Gaussian(0,0) mode laser propagating obliquely with respect to the z-axis. A linear chirp is assumed in which local frequency varies linearly with time and space. The laser interacts with an electron initially at rest located at the origin. Electron motion is investigated through a numerical simulation using a three-dimensional particle trajectory code by solving the relativistic Newton’s equations of motion with corresponding Lorentz force. We find optimum chirp parameter for the maximum electron energy and optimum propagation angle of the laser for the minimum scattering angle of the electron. After the electron attains the final energy, the distance to the z-axis grows slightly when the electron moves along the z-axis which implies that the electron remains restricted near the acceleration direction. We consider a linearly polarized frequency-chirped Hermit-Gaussian(0,0) mode laser propagating obliquely with respect to the z-axis. A linear chirp is assumed in which local frequency varies linearly with time and space. The laser interacts with an electron initially at rest located at the origin. Electron motion is investigated through a numerical simulation using a three-dimensional particle trajectory code by solving the relativistic Newton’s equations of motion with corresponding Lorentz force. We find optimum chirp parameter for the maximum electron energy and optimum propagation angle of the laser for the minimum scattering angle of the electron. After the electron attains the final energy, the distance to the z-axis grows slightly when the electron moves along the z-axis which implies that the electron remains restricted near the acceleration direction. Vacuum Electron Acceleration, Chirped Laser Pulse, Hermit-Gaussian mode, Oblique Propagation Vacuum Electron Acceleration, Chirped Laser Pulse, Hermit-Gaussian mode, Oblique Propagation 589 592 http://opsi.ir/browse.php?a_code=A-10-1-251&slc_lang=en&sid=1 Hossein Saberi Hossein Saberi hsaberi@aut.ac.ir 10031947532846002136 10031947532846002136 No Department of Physics, Amirkabir University of Technology Department of Physics, Amirkabir University of Technology Behrouz Maraghechi Behrouz Maraghechi behrouz@aut.ac.ir 10031947532846002137 10031947532846002137 Yes Department of Physics, Amirkabir University of Technology Department of Physics, Amirkabir University of Technology