Please use this identifier to cite or link to this item:
http://hdl.handle.net/10071/13106
Author(s): | Vranic, M. Grismayer, T. Fonseca, R. A. Silva, L. O. |
Date: | 2017 |
Title: | Electron–positron cascades in multiple-laser optical traps |
Volume: | 59 |
Number: | 1 |
ISSN: | 0741-3335 |
DOI (Digital Object Identifier): | 10.1088/0741-3335/59/1/014040 |
Keywords: | Pair production Intense laser matter interaction Colliding laser cascades Particle-in-cell Gamma-ray production |
Abstract: | We present an analytical and numerical study of multiple-laser QED cascades induced with linearly polarised laser pulses. We analyse different polarisation orientations and propose a configuration that maximises cascade multiplicity and favours laser absorption. We generalise the analytical estimate for the cascade growth rate previously calculated in the field of two colliding linearly polarised laser pulses and account for multiple laser interaction. The estimate is verified by a comprehensive numerical study of four-laser QED cascades across a range of different laser intensities with QED PIC module of OSIRIS. We show that by using four linearly polarised 30 fs laser pulses, one can convert more than 50% of the total energy to gamma- rays at laser intensity I similar or equal to 10(24) W cm(-2). In this configuration, the laser conversion efficiency is higher compared with the case with two colliding lasers. |
Peerreviewed: | yes |
Access type: | Open Access |
Appears in Collections: | CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica |
Files in This Item:
File | Description | Size | Format | |
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Electron.pdf | Pré-print | 5,34 MB | Adobe PDF | View/Open |
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