Desorption/ablation of lithium fluoride induced by extreme ultraviolet laser radiation

• Autorzy: Blejchař T. , Nevrlý V. , Vašinek M. , Dostál M. , Kozubková M. , Dlabka J. , Stachoň M. , Juha L. , Bitala P. , Zelinger Z. , Pira P. , Wild J.

Identyfikatory

DOI

10.1515/nuka-2016-0023

• Konferencja: PLASMA-2015 International Conference on Research and Applications of Plasmas (7-11 September 2015 ; Warsaw, Poland)
• Języki publikacji: EN

Abstrakty

EN

The availability of reliable modeling tools and input data required for the prediction of surface removal rate from the lithium fluoridetargets irradiated by the intense photon beams is essential for many practical aspects. This study is motivated by the practical implementation of soft X-ray (SXR) or extreme ultraviolet (XUV) lasers for the pulsed ablation and thin fi lm deposition. Specifically, it is focused on quantitative description of XUV laser-induced desorption/ablation from lithium fluoride, which is a reference large band-gap dielectric material with ionic crystalline structure. Computational framework was proposed and employed here for the reconstruction of plume expansion dynamics induced by the irradiation of lithium fluoridetargets. The morphology of experimentally observed desorption/ablation craters were reproduced using idealized representation (two-zone approximation) of the laser fluence profile. The calculation of desorption/ablation rate was performed using one-dimensional thermomechanic model (XUV-ABLATOR code) taking into account laser heating and surface evaporation of the lithium fluoridetarget occurring on a nanosecond timescale. This step was followed by the application of two-dimensional hydrodynamic solver for description of laser-produced plasma plume expansion dynamics. The calculated plume lengths determined by numerical simulations were compared with a simple adiabatic expansion (blast-wave) model. The availability of reliable modeling tools and input data required for the prediction of surface removal rate from the lithium fluoridetargets irradiated by the intense photon beams is essential for many practical aspects. This study is motivated by the practical implementation of soft X-ray (SXR) or extreme ultraviolet (XUV) lasers for the pulsed ablation and thin fi lm deposition. Specifically, it is focused on quantitative description of XUV laser-induced desorption/ablation from lithium fluoride, which is a reference large band-gap dielectric material with ionic crystalline structure. Computational framework was proposed and employed here for the reconstruction of plume expansion dynamics induced by the irradiation of lithium fluoridetargets. The morphology of experimentally observed desorption/ablation craters were reproduced using idealized representation (two-zone approximation) of the laser fluence profile. The calculation of desorption/ablation rate was performed using one-dimensional thermomechanic model (XUV-ABLATOR code) taking into account laser heating and surface evaporation of the lithium fluoridetarget occurring on a nanosecond timescale. This step was followed by the application of two-dimensional hydrodynamic solver for description of laser-produced plasma plume expansion dynamics. The calculated plume lengths determined by numerical simulations were compared with a simple adiabatic expansion (blast-wave) model.

Słowa kluczowe

EN

desorption; fluid dynamics; lithium fluoride; numerical simulation; plume expansion; pulsed laser ablation

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2016
• Tom: Vol. 61, No. 2
• Strony: 131--138
• Opis fizyczny: Bibliogr. 19 poz., rys.

Twórcy

autor

Blejchař T.

• Faculty of Mechanical Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, Ostrava-Poruba, CZ 708 33, Czech Republic

autor

Nevrlý V.

• Faculty of Safety Engineering, VŠB-Technical University of Ostrava, Lumírova 13, Ostrava-Výškovice, CZ 700 30, Czech Republic, Tel.: [phone], Fax: [phone]

autor

Vašinek M.

• Faculty of Electrical Engineering and Computer Science, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, Ostrava-Poruba, CZ 708 33, Czech Republic

autor

Dostál M.

• Faculty of Safety Engineering, VŠB-Technical University of Ostrava, Lumírova 13, Ostrava-Výškovice, CZ 700 30, Czech Republic
• J. Heyrovský Institute of Physical Chemistry ASCR, Dolejškova 3, Praha 8, CZ 182 23, Czech Republic

autor

Kozubková M.

• Faculty of Mechanical Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, Ostrava-Poruba, CZ 708 33, Czech Republic

autor

Dlabka J.

• Faculty of Safety Engineering, VŠB-Technical University of Ostrava, Lumírova 13, Ostrava-Výškovice, CZ 700 30, Czech Republic, Tel.: [phone], Fax: [phone]

autor

Stachoň M.

• Faculty of Electrical Engineering and Computer Science, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, Ostrava-Poruba, CZ 708 33, Czech Republic

autor

Juha L.

• Institute of Physics ASCR, Na Slovance 2, Prague 8, CZ 182 21, Czech Republic

autor

Bitala P.

• Faculty of Safety Engineering, VŠB-Technical University of Ostrava, Lumírova 13, Ostrava-Výškovice, CZ 700 30, Czech Republic, Tel.: [phone], Fax: [phone]

autor

Zelinger Z.

• J. Heyrovský Institute of Physical Chemistry ASCR, Dolejškova 3, Praha 8, CZ 182 23, Czech Republic

autor

Pira P.

• J. Heyrovský Institute of Physical Chemistry ASCR, Dolejškova 3, Praha 8, CZ 182 23, Czech Republic
• Faculty of Mathematics and Physics, Charles University in Prague, V Holešovičkách 2, Praha 8, CZ 180 00, Czech Republic

autor

Wild J.

• Faculty of Mathematics and Physics, Charles University in Prague, V Holešovičkách 2, Praha 8, CZ 180 00, Czech Republic

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.