31 July 2016 to 5 August 2016
Gaylord Hotel and Conference Center
US/Eastern timezone

OPTIMIZATION OF RADIATION GENERATION IN THE INTERACTION OF HIGH INTENSITY SHORT PULSE LASERS WITH SNAIL-SHAPED TARGETS

4 Aug 2016, 14:15
15m
Woodrow Wilson B (Gaylord Hotel)

Woodrow Wilson B

Gaylord Hotel

Oral Working Group 7 WG7

Speaker

Prof. Emmanuel d'Humières (University of Bordeaux)

Abstract

A simple setup for the generation of ultra-intense quasistatic magnetic fields, based on the generation of electron currents with a predefined geometry in a curved snail-shaped target has recently been proposed. The possibility to use these magnetic fields to optimize the generation of high energy radiation in high intensity laser plasma interaction has been studied using Particle-In-Cell simulations taking into account radiation losses of energetic electrons in strong fields.

Summary

A simple setup for the generation of ultra-intense quasistatic magnetic fields, based on the generation of electron currents with a predefined geometry in a curved snail-shaped target has recently been proposed [1]. Particle-In-Cell simulations and qualitative estimates show that Giga-Gauss scale magnetic fields may be obtained with existent laser facilities. The described mechanism of strong magnetic field generation may be useful in a wide range of applications, from laboratory astrophysics to magnetized ICF schemes.

The possibility to use the magnetic field, generated in this setup, to optimize the generation of high energy radiation (MeV to GeV) in high intensity laser plasma interaction has been studied using Particle-In-Cell simulations taking into account radiation losses of energetic electrons in strong fields [2,3]. The dependence of the characteristics of the radiation source on the choice of laser and snail-shaped target parameters will be discussed and the scaling to future ultra high intensity laser facilities now being built in Europe will be presented. The competition between these radiation losses and Bremsstrahlung emission will also be discussed.

References: [1] Ph. Korneev, E. d’Humières and V. Tikhonchuk, Phys. Rev. E 91, 043107 (2015). [2] R. Capdessus, E. d’Humières and V. Tikhonchuk, Physical Review E 86, 036401 (2012). [3] R. R. Pandit and Y. Sentoku, Phys. Plasmas 19, 073304 (2012).

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Primary author

Prof. Emmanuel d'Humières (University of Bordeaux)

Co-authors

Prof. Philipp Korneev (MEPHI) Prof. Vladimir Tikhonchuk (University of Bordeaux) Prof. Yasuhiko Sentoku (University of Nevada, Reno)

Presentation Materials

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