Study of laser-produced plasmas from boron, carbon and boron-carbide targets

Henč-Bartolić, Višnja and Kovačević, Eva and Atwee, Tarek and Kunze, Hans-Joachim and Stubičar, Mirko (2001) Study of laser-produced plasmas from boron, carbon and boron-carbide targets. Fizika A, 10 (4). pp. 215-224. ISSN 1330-0008

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Abstract

Spectroscopic investigations were made on plasma clouds created by 20 ns, 3 J ruby laser pulses impinging perpendicularly onto targets of boron carbide, carbon and boron. The irradiance on the targets was about 132 GW cm^-2. Time-resolved spectra of plasmas in the region of wavelength from 16 to 32 nm were observed at a distance of 1 mm from the targets. The maximum electron temperatures were about 60 eV in the case of carbon and boron targets, and about 45 eV in the case of boron-carbide target. Laser evaporation from carbon occurred directly from the solid state (sublimation), and in the case of a boron and boron-carbide melting was observed as an intermediate state.

Item Type: Article
Keywords: Laser-produced plasmas from boron, carbon and boron-carbide (B4C) targets, spectral analysis, light-microscopic surface observation
Date: 2001
Subjects: NATURAL SCIENCES > Physics
Divisions: Faculty of Science > Department of Physics
Publisher: Hrvatsko fizikalno društvo
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 15 Apr 2014 16:41
Last Modified: 15 Apr 2014 16:42
URI: http://digre.pmf.unizg.hr/id/eprint/846

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