Laser and Particle Beams

Research Article

Formation of the X-ray line emission spectrum of excimer laser-produced plasmas

A. Magunova1, A. Faenova1, I. Skobeleva1, T. Pikuza1, D. Batania2, M. Milania2, M. Costatoa3, A. Pozzia3, E. Turcua4, R. Allota4, M. Koeniga5, A. Benuzzia5, F. Floraa6 and A. Realea7

a1 Multicharged Ions Spectra Data Center, Mendeleevo, 141570, Russia

a2 Dipartimento di Fisica, Università di Milano, V.Celoria 16, Milano, Italy

a3 Dipartimento di Fisica, Università di Modena, Italy

a4 Rutherford Appleton Laboratory, Chilton, Oxon (U.K.)

a5 LULI, Ecole Polytechnique, France

a6 Dipartimento Innovazione, CRE ENEA, Frascati, Italy

a7 Dipartimento di Fisica, Università dell'Aquila, Italy

Abstract

Time- and space-integrated emission spectra measurements have been performed in plasma produced by 308 nm wavelength XeCl laser radiation (IL = (4–10)·1012 W/cm2, τ = 10 ns) and by 248 nm wavelength KrF laser pulse train radiation (IL = 5·1015 W/cm2, τ = 7 ps, 16 pulses in train) on CF2 plane target. Theoretical modelling of Lyman series and He-like ion resonance series of fluorine and its fit of experimental data show considerable differences in the absorption of laser radiation in the two plasmas.

(Received October 01 1996)

(Accepted July 30 1997)

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