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Title: Temperature measurements in plasmas produced by high-power lasers interacting with solid targets

Abstract

One of the main goals of the study of plasmas generated by short or ultrashort laser pulses is the estimation of a complex parameter as the evaluation of the plasma temperature. Considering the laser-target and laser-plasma interactions as nonequilibrium processes, it is not possible to define a unique plasma temperature because the behavior of the different subsystems such as ions, electrons, neutral particles, and photons is not uniformly correlated, and the physical parameters can be different in different values of the plasma plume. In this work different experimental setups and techniques and different empirical and theoretical approaches are compared by using a Nd:YAG laser with an intensity of 10{sup 10} W/cm{sup 2} and an iodine laser with an intensity of 10{sup 15}-10{sup 16} W/cm{sup 2}. Time-of-flight measurements have been performed with an ion-energy analyzer and by using a number of Faraday cups in order to measure the velocity and the kinetic energy of ions and electrons emitted by the plasma. The obtained results have been relevant to confirm that by using a Nd:YAG laser the plasma ion temperature in the plasma core is about 400 eV. The electron emission indicates the presence of hot electrons with an energy of aboutmore » 1 keV. These results will be compared with the ones obtained with the powerful iodine laser at Prague Asterix Laser System.« less

Authors:
; ; ; ; ; ; ;  [1]
  1. INFN-Laboratori Nazionali del Sud, Via Santa Sofia 44, 95123 Catania, Italy and Dipartimento di Fisica, Universita di Messina, Contrada Papardo 33, 98166 Sant'Agata, Messina (Italy)
Publication Date:
OSTI Identifier:
20779081
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 77; Journal Issue: 3; Conference: 11. international conference on ion sources, Caen (France), 12-16 Sep 2005; Other Information: DOI: 10.1063/1.2170092; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTRON EMISSION; ELECTRON TEMPERATURE; ELECTRONS; FARADAY CUPS; IODINE LASERS; ION TEMPERATURE; KINETIC ENERGY; LASER TARGETS; PHOTONS; PLASMA; PLASMA DIAGNOSTICS; PLASMA PRODUCTION; PULSES; TIME-OF-FLIGHT METHOD

Citation Formats

Torrisi, L, Gammino, S, Picciotto, A, Margarone, D, Laska, L, Krasa, J, Rohlena, K, Wolowski, J, INFN-Laboratori Nazionali del Sud, Via Santa Sofia 44, 95123 Catania, Dipartimento di Fisica, Universita di Messina, Contrada Papardo 33, 98166 Sant'Agata, Messina, Institute of Physics, ASCR, Na Slovance 2, 182 21 Prague 8, and Institute of Plasma Physics and Laser Microfusion, Hery Street, P.O. Box 49, 2300-908 Warsaw, Warsaw. Temperature measurements in plasmas produced by high-power lasers interacting with solid targets. United States: N. p., 2006. Web. doi:10.1063/1.2170092.
Torrisi, L, Gammino, S, Picciotto, A, Margarone, D, Laska, L, Krasa, J, Rohlena, K, Wolowski, J, INFN-Laboratori Nazionali del Sud, Via Santa Sofia 44, 95123 Catania, Dipartimento di Fisica, Universita di Messina, Contrada Papardo 33, 98166 Sant'Agata, Messina, Institute of Physics, ASCR, Na Slovance 2, 182 21 Prague 8, & Institute of Plasma Physics and Laser Microfusion, Hery Street, P.O. Box 49, 2300-908 Warsaw, Warsaw. Temperature measurements in plasmas produced by high-power lasers interacting with solid targets. United States. https://doi.org/10.1063/1.2170092
Torrisi, L, Gammino, S, Picciotto, A, Margarone, D, Laska, L, Krasa, J, Rohlena, K, Wolowski, J, INFN-Laboratori Nazionali del Sud, Via Santa Sofia 44, 95123 Catania, Dipartimento di Fisica, Universita di Messina, Contrada Papardo 33, 98166 Sant'Agata, Messina, Institute of Physics, ASCR, Na Slovance 2, 182 21 Prague 8, and Institute of Plasma Physics and Laser Microfusion, Hery Street, P.O. Box 49, 2300-908 Warsaw, Warsaw. Wed . "Temperature measurements in plasmas produced by high-power lasers interacting with solid targets". United States. https://doi.org/10.1063/1.2170092.
@article{osti_20779081,
title = {Temperature measurements in plasmas produced by high-power lasers interacting with solid targets},
author = {Torrisi, L and Gammino, S and Picciotto, A and Margarone, D and Laska, L and Krasa, J and Rohlena, K and Wolowski, J and INFN-Laboratori Nazionali del Sud, Via Santa Sofia 44, 95123 Catania and Dipartimento di Fisica, Universita di Messina, Contrada Papardo 33, 98166 Sant'Agata, Messina and Institute of Physics, ASCR, Na Slovance 2, 182 21 Prague 8 and Institute of Plasma Physics and Laser Microfusion, Hery Street, P.O. Box 49, 2300-908 Warsaw, Warsaw},
abstractNote = {One of the main goals of the study of plasmas generated by short or ultrashort laser pulses is the estimation of a complex parameter as the evaluation of the plasma temperature. Considering the laser-target and laser-plasma interactions as nonequilibrium processes, it is not possible to define a unique plasma temperature because the behavior of the different subsystems such as ions, electrons, neutral particles, and photons is not uniformly correlated, and the physical parameters can be different in different values of the plasma plume. In this work different experimental setups and techniques and different empirical and theoretical approaches are compared by using a Nd:YAG laser with an intensity of 10{sup 10} W/cm{sup 2} and an iodine laser with an intensity of 10{sup 15}-10{sup 16} W/cm{sup 2}. Time-of-flight measurements have been performed with an ion-energy analyzer and by using a number of Faraday cups in order to measure the velocity and the kinetic energy of ions and electrons emitted by the plasma. The obtained results have been relevant to confirm that by using a Nd:YAG laser the plasma ion temperature in the plasma core is about 400 eV. The electron emission indicates the presence of hot electrons with an energy of about 1 keV. These results will be compared with the ones obtained with the powerful iodine laser at Prague Asterix Laser System.},
doi = {10.1063/1.2170092},
url = {https://www.osti.gov/biblio/20779081}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 3,
volume = 77,
place = {United States},
year = {2006},
month = {3}
}