Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

3 Nukleonika

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Real-time diagnostics of fast light ion beams accelerated by a sub-nanosecond laser

100%

Margarone D. , Krása J. , Picciotto A. , Prokupek J.

tom Vol. 56, No. 2

137-141

Multi-MeV proton and light ion beams had been produced using the 300 ps, kJ-class iodine laser, operating at Prague Asterix Laser System (PALS) Centre in Prague. The target material had been chosen in such a way so as to increase the proton beam current density (approaching 0.1 A/cm2 at the distance of 1 m from the source). The real-time ion detection was performed by means of a standard flat and ring ion collectors (IC) in the time-of-flight (TOF) configuration. The ICs had been shielded with aluminum foils of various thickness, in order to cut the long photo-peak contribution that is usually overlapping with the ultrafast particle signal, and to analyze mainly the laser-accelerated proton beam. The processing of the obtained experimental IC data is described in some detail, including the deconvolution of TOF signals, evaluation of the UV/soft-X-ray photo-peak absorption, and ion transmission calculations for different metallic filters.

Time-integrated diagnostics of X-ray emission from PALS and PF 1000 : preliminary results

63%

Ryć L. , Krása J. , Juha L. , Kaczmarczyk J. , Paduch M. , Parys P. , Tomaszewski K. , Scholz M.

tom Vol. 46, suppl. 1

41--43

Thermoluminescent and semiconductor detectors operating in an integrating mode have been applied to the measurement of X-ray flashes of high intensity from large plasma facilities. A detection head of special kind has been developed to perform comparison measurements with the use of the detectors of both kinds.

Electromagnetic pulses produced by expanding laser - produced Au plasma

51%

De Marco M. , Cikhardt J. , Krása J. , Velyhan A. , Pfeifer M. , Krouský E. , Klír D. , Řezáč D. , Limpouch J. , Margarone D. , Ullschmied J.

tom Vol. 60, No. 2

239--243

The interaction of an intense laser pulse with a solid target produces large number of fast free electrons. This emission gives rise to two distinct sources of the electromagnetic pulse (EMP): the pulsed return current through the holder of the target and the out flow of electrons into the vacuum. A relation between the characteristics of laser-produced plasma, the target return current and the EMP emission are presented in the case of a massive Au target irradiated with the intensity of up to 3 × 1016 W/cm2. The emission of the EMP was recorded using a 12 cm diameter Moebius loop antennas, and the target return current was measured using a new type of inductive target probe (T-probe). The simultaneous use of the inductive target probe and the Moebius loop antenna represents a new useful way of diagnosing the laser–matter interaction, which was employed to distinguish between laser-generated ion sources driven by low and high contrast laser pulses.