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A study of laser plasmas as X-ray sources in the 1–10 keV spectral region

Published online by Cambridge University Press:  09 March 2009

S. Bastiani ,
S. Bastiani ,
A. Giulietti ,
L.A. Gizzi ,
T. Ceccotti ,
A. Macchi  and
D. Giulietti
S. Bastiani
Affiliation:
Istituto di Fisica Atomica e Molecolare, Via del Giardino 7, 56127 Pisa, Italy
A. Giulietti
Affiliation:
Istituto di Fisica Atomica e Molecolare, Via del Giardino 7, 56127 Pisa, Italy
L.A. Gizzi
Affiliation:
Istituto di Fisica Atomica e Molecolare, Via del Giardino 7, 56127 Pisa, Italy
T. Ceccotti
Affiliation:
Istituto di Fisica Atomica e Molecolare, Via del Giardino 7, 56127 Pisa, Italy
A. Macchi
Affiliation:
Istituto di Fisica Atomica e Molecolare, Via del Giardino 7, 56127 Pisa, Italy
D. Giulietti
Affiliation:
Dipartimento di Fisica, Università di Pisa, Piazza Torricelli 2, Pisa, Italy
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Abstract

An experimental investigation on X-ray emission from laser-produced plasmas is presented and the properties of such an emission of interest for application purposes are examined. Plasmas were generated by focusing 1 μm, 3 ns Nd laser pulses onto Al and Cu targets at an intensity of 1013 W/cm2. The temporal evolution of the emission and its spectral features were investigated by using an X-ray streak-camera and an X-ray photodiode. In the case of Cu targets, the analysis of the emission showed two spectral components. The main component was centered at ≈ 1.2 keV and a minor component, whose intensity was measured to be 10-3 of the previous component, was observed at ≈7 keV. The X-ray conversion efficiency, in the investigated spectral region, was measured to be 1% for Cu targets and 0.3% for Al targets.

Type
Research Article
Information
Laser and Particle Beams , Volume 13 , Issue 4 , December 1995 , pp. 493 - 501
Copyright
Copyright © Cambridge University Press 1995

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References

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