Bremsstrahlung emission and plasma characterization driven by moderately relativistic laser-plasma interactions
Abstract
Relativistic electrons generated by the interaction of petawatt-class short laser pulses with solid targets can be used to generate bright X-rays via bremsstrahlung. The efficiency of laser energy transfer into these electrons depends on multiple parameters including the focused intensity and pre-plasma level. This paper reports experimental results from the interaction of a high intensity petawatt-class glass laser pulses with solid targets at a maximum intensity of W/cm. In-situ measurements of specularly reflected light are used to provide an upper bound of laser absorption and to characterize focused laser intensity, the pre-plasma level and the generation mechanism of second harmonic light. The measured spectrum of electrons and bremsstrahlung radiation provide information about the efficiency of laser energy transfer.
Keywords
Cite
@article{arxiv.2009.12307,
title = {Bremsstrahlung emission and plasma characterization driven by moderately relativistic laser-plasma interactions},
author = {Sushil Singh and Chris D. Armstrong and Ning Kang and Lei Ren and Huiya Liu and Neng Hua and Dean R. Rusby and Ondřej Klimo and Roberto Versaci and Yan Zhang and Mingying Sun and Baoqiang Zhu and Anle Lei and Xiaoping Ouyang and Livia Lancia and Alejandro Laso Garcia and Andreas Wagner and Thomas Cowan and Jianqiang Zhu and Theodor Schlegel and Stefan Weber and Paul McKenna and David Neely and Vladimir Tikhonchuk and Deepak Kumar},
journal= {arXiv preprint arXiv:2009.12307},
year = {2021}
}