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

Scientific paper - Original scientific paper

• Author: Višnja Henč-Bartolić
• Author: Eva Kovačević
• Author: Tarek Atwee
• Author: Hans-Joachim Kunze
• Author: Mirko Stubičar
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

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.

• Keywords (english): laser-produced plasmas from boron; carbon and boron-carbide (B4C) targets; spectral analysis; light-microscopic surface observation
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review
• Publication version: Published version
• Journal title: Fizika A
• Numbering: vol. 10, no. 4, pp. 215-224
• p-ISSN: 1330-0008
• URN:NBN: urn:nbn:hr:217:625191
• Publication: 2001
• Document URL: http://fizika.hfd.hr/fizika_a/av01/a10p215.htm
• Type of resource: Text
• Access conditions: Open access
• Created on: 2019-10-11 14:03:46