1
|
Malko S, Vaisseau X, Perez F, Batani D, Curcio A, Ehret M, Honrubia J, Jakubowska K, Morace A, Santos JJ, Volpe L. Enhanced relativistic-electron beam collimation using two consecutive laser pulses. Sci Rep 2019; 9:14061. [PMID: 31575932 PMCID: PMC6773764 DOI: 10.1038/s41598-019-50401-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 08/31/2019] [Indexed: 11/25/2022] Open
Abstract
The double laser pulse approach to relativistic electron beam (REB) collimation in solid targets has been investigated at the LULI-ELFIE facility. In this scheme two collinear laser pulses are focused onto a solid target with a given intensity ratio and time delay to generate REBs. The magnetic field generated by the first laser-driven REB is used to guide the REB generated by a second delayed laser pulse. We show how electron beam collimation can be controlled by properly adjusting the ratio of focus size and the delay time between the two pulses. We found that the maximum of electron beam collimation is clearly dependent on the laser focal spot size ratio and related to the magnetic field dynamics. Cu-Kα and CTR imaging diagnostics were implemented to evaluate the collimation effects on the respectively low energy (≤100 keV) and high energy (≥MeV) components of the REB.
Collapse
Affiliation(s)
- Sophia Malko
- Centro de Laseres Pulsados (CLPU), Parque Cientifico, E-37185, Villamayor, Salamanca, Spain. .,University of Salamanca, Salamanca, Spain.
| | - Xavier Vaisseau
- Centro de Laseres Pulsados (CLPU), Parque Cientifico, E-37185, Villamayor, Salamanca, Spain
| | - Frederic Perez
- Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique, CNRS, CEA, UMR 7605, F-91128, Palaiseau, France
| | - Dimitri Batani
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France
| | | | - Michael Ehret
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France.,Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstrasse 9, 64289, Darmstadt, Germany
| | - Javier Honrubia
- ETSI Aeronáuticos, Universidad Politécnica de Madrid, Madrid, Spain
| | - Katarzyna Jakubowska
- Institute of Plasma Physics and Laser Microfusion, Hery 23, 01-497, Warsaw, Poland
| | - Alessio Morace
- Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - João Jorge Santos
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France
| | - Luca Volpe
- Centro de Laseres Pulsados (CLPU), Parque Cientifico, E-37185, Villamayor, Salamanca, Spain.,Laser-Plasma Chair at the University of Salamanca, Salamanca, Spain
| |
Collapse
|
2
|
Sentoku Y, Kruer W, Matsuoka M, Pukhov A. Laser Hole Boring and Hot Electron Generation in the Fast Ignition Scheme. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst06-a1149] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Sentoku
- University of Nevada Department of Physics, Mail Stop 220, Reno, Nevada 89506
| | - W. Kruer
- Lawrence Livermore National Laboratory Livermore, California 94550
| | - M. Matsuoka
- Osaka University Institute of Laser Engineering, Osaka 565-0871, Japan
| | - A. Pukhov
- Universität Düsseldorf Institut für Theoretische Physik, 40225, Germany
| |
Collapse
|
3
|
Tabak M, Hinkel D, Atzeni S, Campbell EM, Tanaka K. Fast Ignition: Overview and Background. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst49-3-254] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Max Tabak
- Lawrence Livermore National Laboratory P.O.Box 808, Livermore, California 94550
| | - Denise Hinkel
- Lawrence Livermore National Laboratory P.O.Box 808, Livermore, California 94550
| | - Stefano Atzeni
- Dipartimento di Energetica, Università di Roma “La Sapienza,” Via A. Scarpa, 14 00161 Roma, Italy and INFM, Roma, Italy
| | | | - Kazuo Tanaka
- Institute of Laser Engineering Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| |
Collapse
|
4
|
Campbell EM, Freeman RR, Tanaka KA. Fast Ignition Inertial Fusion: An Introduction and Preview. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst06-a1147] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | | | - Kazuo A. Tanaka
- Osaka University, Graduate School of Engineering and Institute of Laser Engineering Suita, Osaka 565-0871, Japan
| |
Collapse
|
5
|
Lin XX, Li YT, Liu F, Liu BC, Du F, Wang SJ, Chen LM, Zhang L, Zheng Y, Liu X, Liu XL, Wang ZH, Ma JL, Wei ZY, Zhang J. Note: Diagnosing femtosecond laser-solid interactions with monochromatic Kα imager and x-ray pinhole camera. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2011; 82:036104. [PMID: 21456806 DOI: 10.1063/1.3567014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
An x-ray pinhole camera and a monochromatic K(α) imager are used to measure the interactions of intense femtosecond laser pulses with Cu foil targets. The two diagnostics give different features in the spot size and the laser energy scaling, which are resulted from different physical processes. Under our experimental conditions, the K(α) emission is mainly excited by the fast electrons transporting inside the cold bulk target. In contrast, the x-ray pinhole signals are dominated by the broadband thermal x-ray emission from the hot plasma at the front target surface.
Collapse
Affiliation(s)
- X X Lin
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
6
|
Antici P, Fuchs J, Borghesi M, Gremillet L, Grismayer T, Sentoku Y, d'Humières E, Cecchetti CA, Mancić A, Pipahl AC, Toncian T, Willi O, Mora P, Audebert P. Hot and cold electron dynamics following high-intensity laser matter interaction. PHYSICAL REVIEW LETTERS 2008; 101:105004. [PMID: 18851222 DOI: 10.1103/physrevlett.101.105004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2007] [Indexed: 05/26/2023]
Abstract
The characteristics of fast electrons laser accelerated from solids and expanding into a vacuum from the rear target surface have been measured via optical probe reflectometry. This allows access to the time- and space-resolved dynamics of the fast electron density and temperature and of the energy partition into bulk (cold) electrons. In particular, it is found that the density of the hot electrons on the target rear surface is bell shaped, and that their mean energy at the same location is radially homogeneous and decreases with the target thickness.
Collapse
Affiliation(s)
- P Antici
- LULI, Ecole Polytechnique, CNRS, CEA, UPMC, route de Saclay, 91128 Palaiseau, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|