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Non-adiabatic cluster expansion after ultrashort laser interaction

Published online by Cambridge University Press:  01 April 2008

A.Ya. Faenov ,
A.I. Magunov ,
T.A. Pikuz ,
I.Yu. Skobelev ,
D. Giulietti ,
S. Betti ,
M. Galimberti ,
A. Gamucci ,
A. Giulietti  and
L.A. Gizzi
...Show all authors
A.Ya. Faenov*
Affiliation:
Joint Institute for High Temperatures RAS, Moscow, Russia Kansai Photon Science Institute, Japan Atomic Energy Agency, Tyoto, Japan
A.I. Magunov
Affiliation:
A.M. Prokhorov Institute for General Physics RAS, Moscow, Russia
T.A. Pikuz
Affiliation:
Joint Institute for High Temperatures RAS, Moscow, Russia
I.Yu. Skobelev
Affiliation:
Joint Institute for High Temperatures RAS, Moscow, Russia
D. Giulietti
Affiliation:
Intense Laser Irradiation Laboratory, IPCF, Consiglio Nazionale delle Ricerche, Area della Ricerca di Pisa, Pisa, Italy Dipartimento di Fisica, Università di Pisa, Pisa, Italy INFN, Sezione di Pisa, Pisa, Italy
S. Betti
Affiliation:
Intense Laser Irradiation Laboratory, IPCF, Consiglio Nazionale delle Ricerche, Area della Ricerca di Pisa, Pisa, Italy Dipartimento di Fisica, Università di Pisa, Pisa, Italy
M. Galimberti
Affiliation:
Intense Laser Irradiation Laboratory, IPCF, Consiglio Nazionale delle Ricerche, Area della Ricerca di Pisa, Pisa, Italy INFN, Sezione di Pisa, Pisa, Italy
A. Gamucci
Affiliation:
Intense Laser Irradiation Laboratory, IPCF, Consiglio Nazionale delle Ricerche, Area della Ricerca di Pisa, Pisa, Italy Dipartimento di Fisica, Università di Pisa, Pisa, Italy INFN, Sezione di Pisa, Pisa, Italy
A. Giulietti
Affiliation:
Intense Laser Irradiation Laboratory, IPCF, Consiglio Nazionale delle Ricerche, Area della Ricerca di Pisa, Pisa, Italy INFN, Sezione di Pisa, Pisa, Italy
L.A. Gizzi
Affiliation:
Intense Laser Irradiation Laboratory, IPCF, Consiglio Nazionale delle Ricerche, Area della Ricerca di Pisa, Pisa, Italy INFN, Sezione di Pisa, Pisa, Italy
L. Labate
Affiliation:
Intense Laser Irradiation Laboratory, IPCF, Consiglio Nazionale delle Ricerche, Area della Ricerca di Pisa, Pisa, Italy INFN, Sezione di Pisa, Pisa, Italy
T. Levato
Affiliation:
Intense Laser Irradiation Laboratory, IPCF, Consiglio Nazionale delle Ricerche, Area della Ricerca di Pisa, Pisa, Italy Dipartimento di Fisica, Università di Pisa, Pisa, Italy INFN, Sezione di Pisa, Pisa, Italy
P. Tomassini
Affiliation:
Intense Laser Irradiation Laboratory, IPCF, Consiglio Nazionale delle Ricerche, Area della Ricerca di Pisa, Pisa, Italy INFN, Sezione di Pisa, Pisa, Italy
J.R. Marques
Affiliation:
Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique CNRS - CEA-Université Paris, Paris, France
N. Bourgeois
Affiliation:
Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique CNRS - CEA-Université Paris, Paris, France
S. Dobosz dufrenoy
Affiliation:
Service des Photons, Atomes et Molécules, Commissariat à l'Energie Atomique, DSM/IRAMIS, CEN-Saclay, Gif sur Yvette, France
T. Ceccotti
Affiliation:
Service des Photons, Atomes et Molécules, Commissariat à l'Energie Atomique, DSM/IRAMIS, CEN-Saclay, Gif sur Yvette, France
P. Monot
Affiliation:
Service des Photons, Atomes et Molécules, Commissariat à l'Energie Atomique, DSM/IRAMIS, CEN-Saclay, Gif sur Yvette, France
F. Reau
Affiliation:
Service des Photons, Atomes et Molécules, Commissariat à l'Energie Atomique, DSM/IRAMIS, CEN-Saclay, Gif sur Yvette, France
H. Popescu
Affiliation:
Service des Photons, Atomes et Molécules, Commissariat à l'Energie Atomique, DSM/IRAMIS, CEN-Saclay, Gif sur Yvette, France
P. D'oliveira
Affiliation:
Service des Photons, Atomes et Molécules, Commissariat à l'Energie Atomique, DSM/IRAMIS, CEN-Saclay, Gif sur Yvette, France
PH. Martin
Affiliation:
Service des Photons, Atomes et Molécules, Commissariat à l'Energie Atomique, DSM/IRAMIS, CEN-Saclay, Gif sur Yvette, France
Y. Fukuda
Affiliation:
Kansai Photon Science Institute, Japan Atomic Energy Agency, Tyoto, Japan
A.S. Boldarev
Affiliation:
Institute for Mathematical Modeling RAS, Moscow, Russia
S.V. Gasilov
Affiliation:
Joint Institute for High Temperatures RAS, Moscow, Russia Institute for Mathematical Modeling RAS, Moscow, Russia
V.A. Gasilov
Affiliation:
Institute for Mathematical Modeling RAS, Moscow, Russia
*
Address correspondence and reprint request to: Anatoly Ya. Faenov, Joint Institute for High Temperatures of Russian Academy of Sciences, Izhorskaja str. 13/19, 127412 Moscow, Russia. E-mail: [email protected]
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Abstract

We used X-ray spectroscopy as a diagnostic tool for investigating the properties of laser-cluster interactions at the stage in which non-adiabatic cluster expansion takes place and a quasi-homogeneous plasma is produced. The experiment was carried out with a 10 TW, 65 fs Ti:Sa laser focused on CO2 cluster jets. The effect of different laser-pulse contrast ratios and cluster concentrations was investigated. The X-ray emission associated to the Rydberg transitions allowed us to retrieve, through the density and temperature of the emitting plasma, the time after the beginning of the interaction at which the emission occurred. The comparison of this value with the estimated time for the “homogeneous” plasma formation shows that the degree of adiabaticity depends on both the cluster concentration and the pulse contrast. Interferometric measurements support the X-ray data concerning the plasma electron density.

Keywords

Femtosecond laser interaction with clustersInterferometer of plasmaPlasma diagnosticsX-ray spectroscopy of multi-charged ions
Type
Research Article
Information
Laser and Particle Beams , Volume 26 , Issue 1 , March 2008 , pp. 69 - 82
Copyright
Copyright © Cambridge University Press 2008

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