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X-ray spectra of fast ions generated from clusters by ultrashort laser pulses

Published online by Cambridge University Press:  22 July 2003

A.I. MAGUNOV
Affiliation:
General Physics Institute, Russian Academy of Sciences, Moscow, Russia
A.YA. FAENOV
Affiliation:
Multicharged Ions Spectra Data Center, All Russian Institute of Physical-Technical and Radiotechnical Measurements, Moscow, Russia
I.YU. SKOBELEV
Affiliation:
Multicharged Ions Spectra Data Center, All Russian Institute of Physical-Technical and Radiotechnical Measurements, Moscow, Russia
T.A. PIKUZ
Affiliation:
N.E. Bauman Moscow State Technical University, Moscow, Russia
S. DOBOSZ
Affiliation:
CEA-DSM/DRECAM/SPAM, C.E. Saclay, Gif-sur-Yvette Cedex, France
M. SCHMIDT
Affiliation:
CEA-DSM/DRECAM/SPAM, C.E. Saclay, Gif-sur-Yvette Cedex, France
M. PERDRIX
Affiliation:
CEA-DSM/DRECAM/SPAM, C.E. Saclay, Gif-sur-Yvette Cedex, France
P. MEYNADIER
Affiliation:
CEA-DSM/DRECAM/SPAM, C.E. Saclay, Gif-sur-Yvette Cedex, France
O. GOBERT
Affiliation:
CEA-DSM/DRECAM/SPAM, C.E. Saclay, Gif-sur-Yvette Cedex, France
D. NORMAND
Affiliation:
CEA-DSM/DRECAM/SPAM, C.E. Saclay, Gif-sur-Yvette Cedex, France
C. STENZ
Affiliation:
Centre Lasers Intenses and Applications, Université Bordeaux, Talence, France
V. BAGNOUD
Affiliation:
Centre Lasers Intenses and Applications, Université Bordeaux, Talence, France
F. BLASCO
Affiliation:
Centre Lasers Intenses and Applications, Université Bordeaux, Talence, France
J.R. ROCHE
Affiliation:
Centre Lasers Intenses and Applications, Université Bordeaux, Talence, France
F. SALIN
Affiliation:
Centre Lasers Intenses and Applications, Université Bordeaux, Talence, France
B.YU. SHARKOV
Affiliation:
Institute of Experimental and Theoretical Physics, Moscow, Russia

Abstract

The high precision X-ray spectroscopy studies of plasma created from the CO2 clusters in gas jet targets by the ultrashort laser pulses (35 and 60 fs duration) were performed at the intensities IL ∼ 1017–1018 W cm−2. The spectral line shape of the H-like and He-like oxygen ions gains an asymmetry with increasing the laser pulse intensity. Theoretical modeling of the line shape shows that the asymmetry can be explained by absorption of the Doppler-shifted line radiation from the essential fraction of ions (over 10−3) with energies above 1 MeV due to photoionization of inner shells of carbon ions. The results obtained demonstrate measurement capabilities of the X-ray spectral measurements of multicharged ions accelerated during the interaction with a laser radiation.

Type
Research Article
Copyright
2003 Cambridge University Press

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