Research articles

search articles

My Pages

Stat

Members: 3644
Articles: 2'497'992
Articles rated: 2609

16 April 2024

» arxiv » 1511.4495

Article overview

Non-Maxwellian electron distributions resulting from direct laser acceleration in near-critical plasmas
T. Toncian ; C. Wang ; E. McCary ; A. Meadows ; A.V. Arefiev ; J. Blakeney ; K. Serratto ; D. Kuk ; C. Chester ; R. Roycroft ; L. Gao ; H. Fu ; X.Q. Yan ; J. Schreiber ; I. Pomerantz ; A. Bernstein ; H. Quevedo ; G. Dyer ; T. Ditmire ; B. M. Hegelich ;
Date:	14 Nov 2015
Abstract:	The irradiation of few nm thick targets by a finite-contrast high-intensity short-pulse laser results in a strong pre-expansion of these targets at the arrival time of the main pulse. The targets decompress to near and lower than critical densities plasmas extending over few micrometers, i.e. multiple wavelengths. The interaction of the main pulse with such a highly localized but inhomogeneous target leads to the generation of a short channel and further self-focusing of the laser beam. Experiments at the GHOST laser system at UT Austin using such targets measured non-Maxwellian, peaked electron distribution with large bunch charge and high electron density in the laser propagation direction. These results are reproduced in 2D PIC simulations using the EPOCH code, identifying Direct Laser Acceleration (DLA) as the responsible mechanism. This is the first time that DLA has been observed to produce peaked spectra as opposed to broad, maxwellian spectra observed in earlier experiments. This high-density electrons have potential applications as injector beams for a further wakefield acceleration stage as well as for pump-probe applications.
Source:	arXiv, 1511.4495
Services:	Forum \| Review \| PDF \| Favorites

No review found.

Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser claudebot

ScienXe.org
» my Online CV
» Free

News, job offers and information for researchers and scientists:

home

contact

sitemap