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pro vyhledávání: '"S. Lugomer"'
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Akademický článek
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Publikováno v:
Fluid Dynamics Research. 36:291-299
Lugomer and colleagues have discovered filamentary-like coherent structures in small ( ∼ 3 mm diameter) laser-beam–metal-surface interactions. Experimental photographs of a small part of the laser spot area shows frozen “fossil” filament-like
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15632f2a41e7e1e655bb124b32a5dd8f
https://doi.org/10.1016/j.fluiddyn.2004.08.003
https://doi.org/10.1016/j.fluiddyn.2004.08.003
Autor:
S. Lugomer
Publikováno v:
Journal of Fluids and Structures. 15:351-364
Bubbles generated in laser–metal interactions (LMI) at the transition from planar-to-volume boiling behave like hard (and soft) spheres. Micrographic analysis indicates that the surface layer of vaporizing metal, which comprises small microscale bu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0128059d796c1b7608b1abf27a8bff04
https://doi.org/10.1006/jfls.2000.0333
https://doi.org/10.1006/jfls.2000.0333
Autor:
S. Lugomer
Publikováno v:
Journal of Fluids and Structures. 13:647-661
Laser-induced microscale vortex rings have been generated on a vaporizing tantalum surface, and their reconnection was studied in the presence of the shock waves on the nanosecond (ns) time scale. A reach spectrum of the ring structures was obtained,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::722f2a0e8d2a5ba237f0cc2d58fc60d0
https://doi.org/10.1006/jfls.1999.0223
https://doi.org/10.1006/jfls.1999.0223
Autor:
S. Lugomer
Publikováno v:
Journal of Applied Physics. 83:510-517
Laser-induced vaporization of tantalum on the nanosecond time scale, in the nonstationary regime generates the vortex filaments which show the organization of a cellular type with remarkable degree of two-dimensional order. The adjacent hexagonal cel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f195db27de625cd2012502c30cde5826
https://doi.org/10.1063/1.366664
https://doi.org/10.1063/1.366664
Autor:
S Lugomer, G. Bitelli
Publikováno v:
Vacuum. 47:271-285
Laser-material processing in the regime of plasma explosion in vacuum and in pressurized (reactive) gaseous atmospheres is a new emerging technology. The characteristics are considered of the explosion of a “colloidal” laser-generated plasma, i.e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9849cc91adc4e7b94363ca6dfb5b0fa8
https://doi.org/10.1016/0042-207x(95)00227-8
https://doi.org/10.1016/0042-207x(95)00227-8
Autor:
S Lugomer, G. Bitelli
Publikováno v:
Vacuum. 47:13-22
In the high power laser treatment of metal surfaces (Ti, Ta, Mo) in of O2 and N2, at the pressure P = 2–6 atm, with the CO2 laser beam of energy density Q ∼ 20–50 J/cm2, of the power density ∼ 109 W/cm2, and of the pulse duration τ ∼ 150 n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ad2650292dafdfe374ac88cd082302f
https://doi.org/10.1016/0042-207x(95)00175-1
https://doi.org/10.1016/0042-207x(95)00175-1
Autor:
S Lugomer
Publikováno v:
Vacuum. 46:1423-1431
Inhomogeneity of laser-driven technological processes, caused by the surface inhomogeneity is considered. A homogeneous laser beam interacting with the (metal) surface containing irregular grains, grain boundaries, dislocations, dislocation pile-ups,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8cb1f6e9153ec3c009696e63bddc4f7
https://doi.org/10.1016/0042-207x(95)00165-4
https://doi.org/10.1016/0042-207x(95)00165-4
Autor:
S Lugomer
Publikováno v:
Vacuum. 46:1325-1331
Inhomogeneity of laser-driven technological processes, caused either by beam inhomogeneity or surface inhomogeneity is considered. Inhomogeneity is induced through the inhomogeneous temperature and the pressure fields on the material surface, thus di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::324395a62442a6a85220534df9b89bd2
https://doi.org/10.1016/0042-207x(95)00021-6
https://doi.org/10.1016/0042-207x(95)00021-6