Generation of shock waves by hot electron explosions driven by a CO2 laser

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DOIResolve DOI: http://doi.org/10.1063/1.92324
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TypeArticle
Journal titleApplied Physics Letters
ISSN0003-6951
Volume38
Issue4
Pages226228; # of pages: 3
Subjectshock waves; aluminium; explosions; high pressure; hot carriers
AbstractWe observe shock waves with velocity 2.5×106 cm/sec generated by the interaction of a nanosecond CO2 laser at an intensity of 3×1014 W/cm2 with 12–40-μm-thick aluminum foils. It is proposed that these shock waves are not generated by thermal ablation but rather by hot electronheating and explosion of a layer of Al several microns thick adjacent to the target surface. Shock pressures produced by this process are comparable to the highest pressures yet observed by conventional laser driven thermal ablation.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada
Peer reviewedYes
NRC number19010
NPARC number21274945
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Record identifier116b2f3a-b375-4d71-893b-834a146088cb
Record created2015-05-04
Record modified2016-05-09
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