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216 results on '"Laska, L."'

2. Studies of intense-laser plasma instabilities

Author

Láska, L., Krása, J., Badziak, J., Jungwirth, K., Krouský, E., Margarone, D., Parys, P., Pfeifer, M., Rohlena, K., Rosiński, M., Ryć, L., Skála, J., Torrisi, L., Ullschmied, J., Velyhan, A., and Wołowski, J.

Published
2013
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8. Equivalent ion temperature in Ta plasma produced by high energy laser ablation

Author

Torrisi, L., Gammino, S., Ando, L., Laska, L., Krasa, J., Rohlena, K., Ullschmied, J., Wolowski, J., Badziak, J., and Parys, P.

Subjects
Ablation (Vaporization technology) -- Methods, Plasma diagnostics -- Optical properties, Laser-plasma interactions -- Analysis, Physics
Abstract

The characteristics of the of the ion streams are investigated by using an electrostatic ion energy analyzer and placing different ion collectors at various angles with respect to the target normal. The ion energy distribution as a function of the ion charge state is measured and the comparison of the properties of different ion groups generated by laser beams at two different energies is carried out.

Published
2006

20. Monocrystalline diamond detector for ionizing radiation emitted by high temperature laser-generated plasma.

Author

Torrisi, L., Margarone, D., Laska, L., Marinelli, M., Milani, E., Verona-Rinati, G., Cavallaro, S., Ryc, L., Krasa, J., Rohlena, K., and Ullschmied, J.

Subjects
DIAMONDS, DETECTORS, GRENZ rays, LASER plasmas, IONS, IONIZING radiation
Abstract

A monocrystalline diamond detector was used for measurements of soft x-ray and ion emission from laser plasma obtained with the use of the PALS Asterix laser at intensities on the order of 1016 W/cm2 and pulse duration of 300 ps. Measurements were performed by varying the laser intensity and the focal position of the laser beam with respect to the target position. The spectra were obtained with the use of a diamond detector, which was without a filter, and showed not only the photopeak due to UV and soft x rays but also the ions emitted from the plasma. The detector was employed with absorbers of different thicknesses to determine, as a first approximation, the energy distribution of soft x-ray emission from the plasma. The time-of-flight technique was employed to determine the ion kinetic energies. [ABSTRACT FROM AUTHOR]

Published
2008
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21. The electron cyclotron resonance coupled to laser ion source for charge state enhancement experiment: Production of high intensity ion beams by means of a hybrid ion source

Author

Gammino, S., Torrisi, L., Ciavola, G., Ando, L., Celona, L., Laska, L., Krasa, J., and Manciagli, S.

Subjects
Lasers -- Research, Electrons -- Research, Cyclotron resonance -- Research, Laser, Physics
Abstract

The experiment with the ECLISSE method (ECR ion source coupled to a laser ion source for charge state enhancement) is carried out. The coupling efficiency of the ion beam produced by the laser ion source and the electron cyclotron resonance is found to be remarkable.

Published
2004

22. Tantalum ions produced by 1064 nm pulsed laser irradiation

Author

Torrisi, L., Gammino, S., Ando, L., and Laska, L.

Subjects
Tantalum -- Optical properties, Neodymium -- Optical properties, Ablation (Vaporization technology) -- Research, Physics
Abstract

A Q-switched Nd: YAG (yttrium aluminum garnet) laser (1064 nm wavelength) with a 9 ns pulse width, 1-900 mJ pulse energy, and 0.5 mm square target spot, is used to irradiate tantalum targets in vacuum. It is observed that irradiation produces a strong etching of the metal and forms a plasma in front of the target.

Published
2002

23. Effects of 2 mass % Si admixture in a laser-produced Fe plasma

Author

Krasa J., Laska L., Rohlena K., Velyhan A., Czarnecka A., Parys P., Ryc L., Wolowski J., LORUSSO, ANTONELLA, NASSISI, Vincenzo, Krasa, J., Laska, L., Rohlena, K., Velyhan, A., Lorusso, Antonella, Nassisi, Vincenzo, Czarnecka, A., Parys, P., Ryc, L., and Wolowski, J.

Subjects
ion emission, iron, silicon, elemental semiconductor, plasma production by laser
Abstract

Emission of multiply charged ions and soft x-rays from the plasmas produced by laser pulses focused on (111) surface of Fe and Fe-2 mass % Si single crystals is investigated for wavelengths of 1064 and 248 nm and intensities up to approximate to 1x10(10) W/cm(2). It is demonstrated that the Si admixture in the Fe plasma results in a higher emission of Feq+ ions (1

Published
2008

24. Studies of intense-laser plasma instabilities

Author

Laska, L[ 1 ], Krasa, J[ 1 ], Badziak, J[ 2 ], Jungwirth, K[ 1 ], Krousky, E[ 1 ], Margarone, D[ 1 ], Parys, P[ 2 ], Pfeifer, M[ 1 ], Rohlena, K[ 1 ], Rosinski, M[ 2 ], Ryc, L[ 2 ], Skala, J[ 1 ], Torrisi, Lorenzo, L[, 3, 4, ], Ullschmied, J[ 5 ], Velyhan, A[ 1 ], and Wolowski, J[ 2

Published
2013

50. Flexibile laser ion source for ion implantation

Author

Boody, F. P., Bickel, P., Kempf, J., Monkman, G., Hopfl, R., Hora, H., Laska, L., Krasa, J., Pfeifer, M, Rohlena, K., Wolowski, J., Badziak, J., Parys, P., Ryc, L., Woryna, E., Szyldowski, A., Torrisi, Lorenzo, and Mezzasalma, Angela Maria

Published
2004

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