Postionisation of a spatially nonuniform plasma plume under high-intensity femtosecond laser irradiation

The plasma plume formed by a high-power nanosecond laser pulse on the surface of solid targets as well as the plume parameters after its irradiation by a high-intensity femtosecond laser pulse are investigated by optical diagnostic techniques. Two-dimensional patterns of the electron plasma density...

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Published inQuantum electronics (Woodbury, N.Y.) Vol. 47; no. 1; pp. 42 - 47
Main Authors Krestovskikh, D A, Ivanov, K A, Tsymbalov, I N, Shulyapov, S A, Bukin, V V, Volkov, R V, Rupasov, A A, Savel'ev, A B
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.01.2017
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Summary:The plasma plume formed by a high-power nanosecond laser pulse on the surface of solid targets as well as the plume parameters after its irradiation by a high-intensity femtosecond laser pulse are investigated by optical diagnostic techniques. Two-dimensional patterns of the electron plasma density are reconstructed from experimentally recorded interferograms at different stages of plasma evolution. It is shown that the interaction of the high-intensity femtosecond radiation with the plasma cloud is accompanied by the field ionisation of atoms and ions as well as by a significant increase in the electron density throughout the interaction volume.
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ISSN:1063-7818
1468-4799
DOI:10.1070/QEL16267