17 KB321 KB15 KB200020242008Bončina, TonicaHenč-Bartolič, VišnjaJakovljević, SuzanaPipić, DavorZupanič, Francštevilka:3letnik:42str. 111-115ISSN:1580-2949COBISSID:678058URN:URN:NBN:SI:doc-9GBTABAEenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijealuminijAluminij Mostaraluminumlaserska ablacijapreiskava materialatanke plastiThe action of a laser on an aluminium target| Obsevanje aluminijaste tarče z laserjem|A nitrogen laser beam (337 nm, 6 ns (FWHM), (3.2 plus minus 0.2) mJ) was focused with a quartz lens (f = 100 mm) onto an aluminium target in air at normal pressure. The laser irradiation and plasma explosion caused a modification to the Al surface and the deposition of a thin film (droplets) onto a glassy carbon plate. The irradiated target and the deposited material were studied with a scanning electron microscope (SEM) and a focused-ion-beam (FIB) device. A crater surrounded by a rim was produced on the spot of maximum irradiation on the aluminium target. The crater, very deep in comparison to its width and thickness, was presumably caused by the Kelvin-Helmholtz and the Rayleigh-Taylor instabilities. The temperatures of the electron and the massive particles were explainedŽarek laserske svetlobe (337 nm, 6 ns ((FWHM), (3.2 plus minus 0.2) mJ) smo s kremenovo lečo (f = 100 mm) fokusirali na aluminijevo tarčo, ki je bila na zraku pri normalnem zračnem tlaku. Obsevanje z laserjem in eksplozija plazme sta povzročila spremembo površine aluminija ter nanos tanke plasti in kapljic na steklasto ogljikovo ploščico. Obsevano tarčo in nanesen material smo raziskali z vrstičnim elektronskim mikroskopom (SEM) in s fokusiranim ionskim curkom (FIB). Na aluminijevi tarči je na najbolj obsevanem mestu nastal krater, ki je bil zelo globok v primerjavi z njegovo širino in debelino. Krater je bil povzročen zaradi Kelvin-Helmholtzove in Rayleigh-Taylorjeve nestabilnosti. V delu smo razložili tudi temperaturo elektronov in temperaturo masivnih delcevTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije