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Generation of X rays and energetic ions from superintense laser irradiation of micron-sized Ar clusters

Published online by Cambridge University Press:  01 July 2004

Y. FUKUDA ,
Y. AKAHANE ,
M. AOYAMA ,
N. INOUE ,
H. UEDA ,
Y. KISHIMOTO ,
K. YAMAKAWA ,
A.YA. FAENOV ,
A.I. MAGUNOV  and
T.A. PIKUZ
...Show all authors
Y. FUKUDA
Affiliation:
Advanced Photon Research Center, Japan Atomic Energy Research Institute, Kizu-cho, Kyoto, Japan
Y. AKAHANE
Affiliation:
Advanced Photon Research Center, Japan Atomic Energy Research Institute, Kizu-cho, Kyoto, Japan
M. AOYAMA
Affiliation:
Advanced Photon Research Center, Japan Atomic Energy Research Institute, Kizu-cho, Kyoto, Japan
N. INOUE
Affiliation:
Advanced Photon Research Center, Japan Atomic Energy Research Institute, Kizu-cho, Kyoto, Japan
H. UEDA
Affiliation:
Advanced Photon Research Center, Japan Atomic Energy Research Institute, Kizu-cho, Kyoto, Japan
Y. KISHIMOTO
Affiliation:
Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Naka, Ibaraki, Japan
K. YAMAKAWA
Affiliation:
Advanced Photon Research Center, Japan Atomic Energy Research Institute, Kizu-cho, Kyoto, Japan
A.YA. FAENOV
Affiliation:
Multicharged Ions Spectra Data Center of VNIIFTRI, Mendeleevo, Moscow, Russia
A.I. MAGUNOV
Affiliation:
Multicharged Ions Spectra Data Center of VNIIFTRI, Mendeleevo, Moscow, Russia
T.A. PIKUZ
Affiliation:
Multicharged Ions Spectra Data Center of VNIIFTRI, Mendeleevo, Moscow, Russia
I.YU. SKOBELEV
Affiliation:
Multicharged Ions Spectra Data Center of VNIIFTRI, Mendeleevo, Moscow, Russia
J. ABDALLAH
Affiliation:
Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM
G. CSANAK
Affiliation:
Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM
A.S. BOLDAREV
Affiliation:
Institute of Mathematical Modeling, Russian Academy of Sciences, Moscow, Russia
V.A. GASILOV
Affiliation:
Institute of Mathematical Modeling, Russian Academy of Sciences, Moscow, Russia
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Abstract

High-resolution K-shell spectra of a plasma created by superintense laser irradiation of micron-sized Ar clusters have been measured with an intensity above 1019 W/cm2 and a pulse duration of 30 fs. The total photon flux of 2 × 108 photons/pulse was achieved for Heα1 resonant line of Ar (λ = 3.9491 Å, 3.14 keV). In parallel with X-ray measurements, energy distributions of emitted ions have been measured. The multiply charged ions with kinetic energies up to 800 keV were observed. It is found that hot electrons produced by high contrast laser pulses allow the isochoric heating of clusters and shift the ion balance toward the higher charge states, which enhances both the X-ray line yield of the He-like argon ion and the ion kinetic energy.

Keywords

ClusterHigh power laserIsochoric heatingMultiply charged ionX ray
Type
Research Article
Information
Laser and Particle Beams , Volume 22 , Issue 3 , July 2004 , pp. 215 - 220
Copyright
© 2004 Cambridge University Press

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