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199 results on '"Cikhardt, J."'

1. Radiative characterization of supersonic jets and shocks in a laser-plasma experiment

Author

Bohlin, H, Brack, F-E, Cervenak, M, Chodukowski, T, Cikhardt, J, Dostál, J, Dudžák, R, Hubner, J., Huo, W, Jelinek, S, Klír, D, Kroll, F, Krupka, M, Krůs, M, Pisarczyk, T, Rusiniak, Z, Schlegel, T, Schramm, U., Nguyen-Bui, T-H, Weber, S, Zaraś-Szydłowska, A, Zeil, K, Kumar, D, and Tikhonchuk, V

Subjects
Physics - Plasma Physics
Abstract

The interaction of supersonic laser-generated plasma jets with a secondary gas target was studied experimentally. The plasma parameters of the jet, and the resulting shock, were characterized using a combination of multi-frame interferometry/shadowgraphy, and X-ray diagnostics, allowing for a detailed study of their structure and evolution. The velocity was obtained with an X-ray streak camera, and filtered X-ray pinhole imaging was used to infer the electron temperature of the jet and shock. The topology of the ambient plasma density was found to have a significant effect on the jet and shock formation, as well as on their radiation characteristics. The experimental results were compared with radiation hydrodynamic simulations, thereby providing further insights into the underlying physical processes of the jet and shock formation and evolution.

Published
2020
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3. Ion emission from warm dense matter produced by irradiation with a soft x-ray free-electron laser

Author

(0000-0002-3888-8370) Krása, J., (0000-0003-3982-9978) Burian, T., (0000-0002-0776-6012) Hájková, V., (0000-0001-6930-1774) Chalupský, J., (0000-0002-1999-811X) Jelínek, Š., (0000-0001-8743-9531) Frantálová, K., (0000-0003-0784-4145) Krupka, M., (0000-0002-5939-4097) Kuglerová, Z., (0000-0001-5754-2431) Kumar Singh, S., (0000-0002-5426-1519) Vozda, V., (0000-0002-8549-0859) Vyšín, L., (0000-0002-7162-7500) Smid, M., (0000-0002-2767-9995) Perez-Martin, P., (0009-0003-3427-3082) Kühlman, M., (0000-0002-4243-0282) Pintor, J., (0000-0002-8222-8038) Cikhardt, J., (0009-0008-0393-6580) Dreimann, M., Eckermann, D., Rosenthal, F., (0000-0003-1016-0975) Vinko, S. M., (0000-0002-2872-7223) Forte, A., (0000-0001-9998-3606) Gawne, T. D., (0000-0002-0104-1424) Campbell, T., Ren, S., (0000-0002-7723-2331) Shi, Y., (0000-0003-1882-3702) Hutchinson, T., (0000-0001-6748-0422) Humphries, O. S., (0000-0003-1228-2263) Preston, T., (0000-0003-1513-9198) Makita, M., (0000-0003-0868-4745) Nakatsutsumi, M., (0000-0002-3882-510X) Pan, X., (0000-0001-9759-1166) Köhler, A., (0000-0003-0713-5824) Harmand, M., (0009-0008-2136-7780) Toleikis, S., (0000-0001-5975-776X) Falk, K., (0000-0003-4189-8753) Juha, L., (0000-0002-3888-8370) Krása, J., (0000-0003-3982-9978) Burian, T., (0000-0002-0776-6012) Hájková, V., (0000-0001-6930-1774) Chalupský, J., (0000-0002-1999-811X) Jelínek, Š., (0000-0001-8743-9531) Frantálová, K., (0000-0003-0784-4145) Krupka, M., (0000-0002-5939-4097) Kuglerová, Z., (0000-0001-5754-2431) Kumar Singh, S., (0000-0002-5426-1519) Vozda, V., (0000-0002-8549-0859) Vyšín, L., (0000-0002-7162-7500) Smid, M., (0000-0002-2767-9995) Perez-Martin, P., (0009-0003-3427-3082) Kühlman, M., (0000-0002-4243-0282) Pintor, J., (0000-0002-8222-8038) Cikhardt, J., (0009-0008-0393-6580) Dreimann, M., Eckermann, D., Rosenthal, F., (0000-0003-1016-0975) Vinko, S. M., (0000-0002-2872-7223) Forte, A., (0000-0001-9998-3606) Gawne, T. D., (0000-0002-0104-1424) Campbell, T., Ren, S., (0000-0002-7723-2331) Shi, Y., (0000-0003-1882-3702) Hutchinson, T., (0000-0001-6748-0422) Humphries, O. S., (0000-0003-1228-2263) Preston, T., (0000-0003-1513-9198) Makita, M., (0000-0003-0868-4745) Nakatsutsumi, M., (0000-0002-3882-510X) Pan, X., (0000-0001-9759-1166) Köhler, A., (0000-0003-0713-5824) Harmand, M., (0009-0008-2136-7780) Toleikis, S., (0000-0001-5975-776X) Falk, K., and (0000-0003-4189-8753) Juha, L.

Abstract

We report on an experiment performed at the FLASH2 free-electron laser (FEL) aimed at producing warm dense matter via soft x-ray isochoric heating. In the experiment, we focus on study of the ions emitted during the soft x-ray ablation process using time-of-flight electron multipliers and a shifted Maxwell–Boltzmann velocity distribution model. We find that most emitted ions are thermal, but that some impurities chemisorbed on the target surface, such as protons, are accelerated by the electrostatic field created in the plasma by escaped electrons. The morphology of the complex crater structure indicates the presence of several ion groups with varying temperatures. We find that the ion sound velocity is controlled by the ion temperature and show how the ion yield depends on the FEL radiation attenuation length in different materials.

Published
2024

4. Evolution of filament-like compact structures in small 3 kJ dense plasma focus discharges.

Author

Kubes, P., Marciniak, L., Sadowski, M. J., Paduch, M., Cikhardtova, B., Cikhardt, J., Kravarik, J., Malir, J., Munzar, V., Novotný, J., and Rezac, K.

Subjects
PLASMA focus, DENSE plasmas, PLASMA flow, ELECTRIC currents, PLASMA devices
Abstract

This paper presents the filamentary structure of the pinched column in a smaller plasma focus device filled with deuterium. The deflections were observed using schlieren and differential interferometry techniques. The observed filaments have a transverse diameter of 40–200 μm, which could be interpreted based on the electric current hypothesis as local concentrations of electric current. The evolution of filaments was compared with global structures recorded by extra ultraviolet frames. These results provide a basis for considering the possibility of a filamentary composition of the poloidal current in compact structures. The model of filaments with a helical shape of electrical current may be able to explain the central narrow and dense cord in the axis of the column, the different lifetimes of the structures, and the submillimeter sources of fast electrons and ions. [ABSTRACT FROM AUTHOR]

Published
2024
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6. Comparison of density profiles measured via laser interferometry with MHD simulations during shock wave reflection on mega-ampere dense plasma focus.

Author

Malir, J., Klir, D., Cikhardt, J., Cikhardtova, B., Kravarik, J., Kubes, P., Munzar, V., Novotny, J., Rezac, K., and Paduch, M.

Subjects
PLASMA focus, SHOCK waves, DENSE plasmas, LASER interferometry, DENSITY, PHENOMENOLOGICAL theory (Physics)
Abstract

The analysis of Z-pinch implosion dynamics plays one of the most important roles in the study of pulsed power discharges. At the same time, it is difficult to determine the density distribution together with the current density (current coupling to the imploding layer) to provide more detailed information about the dynamics. Numerical simulations can now provide high-resolution results that are almost unattainable in experiments. The challenge, however, is to obtain reliable results that are close enough to the experimental data to describe individual physical phenomena. In this paper, we show that it is possible to use a combination of experimental data and magnetohydrodynamic (MHD) simulations to verify and identify the physical processes during the stagnation of a Z-pinch. We focus on the analysis of the density profile from experimental data of the mega-ampere plasma focus PF-1000 and its reconstruction using an extended MHD code. Thanks to multi-frame interferometry, we recorded a total of 29 interferometric images of two shots, each in a 200 ns time window around the pinch phase. We were then able to obtain density profiles and observe the reflection of the shock wave from the axis. By the appropriate choice of initial conditions and boundary values in the simulation, we were able to obtain reasonable agreement with the experimental values. We also evaluated the possible shortcomings of the 1D simulation, such as mass loss and current flow at the periphery. [ABSTRACT FROM AUTHOR]

Published
2024
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10. Characterization of bright betatron radiation generated by direct laser acceleration of electrons in plasma of near critical density.

Author

Cikhardt, J., Gyrdymov, M., Zähter, S., Tavana, P., Günther, M. M., Bukharskii, N., Borisenko, N., Jacoby, J., Shen, X. F., Pukhov, A., Andreev, N. E., and Rosmej, O. N.

Subjects
LASER plasma accelerators, LASER plasmas, BETATRONS, RADIATION, LASER pulses, ULTRASHORT laser pulses, PONDEROMOTIVE force, ELECTRON beams
Abstract

Directed x-rays produced in the interaction of sub-picosecond laser pulses of moderate relativistic intensity with plasma of near-critical density are investigated. Synchrotron-like (betatron) radiation occurs in the process of direct laser acceleration (DLA) of electrons in a relativistic laser channel when the electrons undergo transverse betatron oscillations in self-generated quasi-static electric and magnetic fields. In an experiment at the PHELIX laser system, high-current directed beams of DLA electrons with a mean energy ten times higher than the ponderomotive potential and maximum energy up to 100 MeV were measured at 1019 W/cm2 laser intensity. The spectrum of directed x-rays in the range of 5–60 keV was evaluated using two sets of Ross filters placed at 0° and 10° to the laser pulse propagation axis. The differential x-ray absorption method allowed for absolute measurements of the angular-dependent photon fluence. We report 1013 photons/sr with energies >5 keV measured at 0° to the laser axis and a brilliance of 1021 photons s−1 mm−2 mrad−2 (0.1%BW)−1. The angular distribution of the emission has an FWHM of 14°–16°. Thanks to the ultra-high photon fluence, point-like radiation source, and ultra-short emission time, DLA-based keV backlighters are promising for various applications in high-energy-density research with kilojoule petawatt-class laser facilities. [ABSTRACT FROM AUTHOR]

Published
2024
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11. Ultra-high efficiency bremsstrahlung production in the interaction of direct laser-accelerated electrons with high-Z material

Author

Tavana, P., primary, Bukharskii, N., additional, Gyrdymov, M., additional, Spillmann, U., additional, Zähter, Ş., additional, Cikhardt, J., additional, Borisenko, N. G., additional, Korneev, Ph., additional, Jacoby, J., additional, Spielmann, C., additional, Andreev, N. E., additional, Günther, M. M., additional, and Rosmej, O. N., additional

Published
2023
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12. Data publication: Ion emission from warm dense matter produced by irradiation with a soft x-ray free-electron laser

Author

(0000-0002-3888-8370) Krása, J., (0000-0003-3982-9978) Burian, T., (0000-0002-0776-6012) Hájková, V., (0000-0001-6930-1774) Chalupský, J., (0000-0002-1999-811X) Jelínek, Š., (0000-0001-8743-9531) Frantálová, K., (0000-0003-0784-4145) Krupka, M., (0000-0002-5939-4097) Kuglerová, Z., (0000-0001-5754-2431) Kumar Singh, S., (0000-0002-5426-1519) Vozda, V., (0000-0002-8549-0859) Vyšín, L., (0000-0002-7162-7500) Smid, M., (0000-0002-2767-9995) Perez-Martin, P., (0009-0003-3427-3082) Kühlman, M., (0000-0002-4243-0282) Pintor, J., (0000-0002-8222-8038) Cikhardt, J., (0009-0008-0393-6580) Dreimann, M., Eckermann, D., Rosenthal, F., (0000-0003-1016-0975) Vinko, S. M., (0000-0002-2872-7223) Forte, A., (0000-0001-9998-3606) Gawne, T. D., (0000-0002-0104-1424) Campbell, T., Ren, S., (0000-0002-7723-2331) Shi, Y., (0000-0003-1882-3702) Hutchinson, T., (0000-0001-6748-0422) Humphries, O. S., (0000-0003-1228-2263) Preston, T., (0000-0003-1513-9198) Makita, M., (0000-0003-0868-4745) Nakatsutsumi, M., (0000-0002-3882-510X) Pan, X., (0000-0001-9759-1166) Köhler, A., (0000-0003-0713-5824) Harmand, M., (0009-0008-2136-7780) Toleikis, S., (0000-0001-5975-776X) Falk, K., (0000-0003-4189-8753) Juha, L., (0000-0002-3888-8370) Krása, J., (0000-0003-3982-9978) Burian, T., (0000-0002-0776-6012) Hájková, V., (0000-0001-6930-1774) Chalupský, J., (0000-0002-1999-811X) Jelínek, Š., (0000-0001-8743-9531) Frantálová, K., (0000-0003-0784-4145) Krupka, M., (0000-0002-5939-4097) Kuglerová, Z., (0000-0001-5754-2431) Kumar Singh, S., (0000-0002-5426-1519) Vozda, V., (0000-0002-8549-0859) Vyšín, L., (0000-0002-7162-7500) Smid, M., (0000-0002-2767-9995) Perez-Martin, P., (0009-0003-3427-3082) Kühlman, M., (0000-0002-4243-0282) Pintor, J., (0000-0002-8222-8038) Cikhardt, J., (0009-0008-0393-6580) Dreimann, M., Eckermann, D., Rosenthal, F., (0000-0003-1016-0975) Vinko, S. M., (0000-0002-2872-7223) Forte, A., (0000-0001-9998-3606) Gawne, T. D., (0000-0002-0104-1424) Campbell, T., Ren, S., (0000-0002-7723-2331) Shi, Y., (0000-0003-1882-3702) Hutchinson, T., (0000-0001-6748-0422) Humphries, O. S., (0000-0003-1228-2263) Preston, T., (0000-0003-1513-9198) Makita, M., (0000-0003-0868-4745) Nakatsutsumi, M., (0000-0002-3882-510X) Pan, X., (0000-0001-9759-1166) Köhler, A., (0000-0003-0713-5824) Harmand, M., (0009-0008-2136-7780) Toleikis, S., (0000-0001-5975-776X) Falk, K., and (0000-0003-4189-8753) Juha, L.

Abstract

Data set on the ion emission of different materials. Each dataset is separate and titled with the chemical symbol or abbreviation of the specific material.

Published
2023

13. Ion emission from plasmas produced by femtosecond pulses of short-wavelength free-electron laser radiation focused on massive targets: an overview and comparison with long-wavelength laser ablation

Author

Krása, J, Nassisi, V, Burian, T, Hájková, V, Chalupský, J, Jelinek, S, Frantálová, K, Krupka, M, Kuglerová, Z, Singh, SK, Vozda, V, Vyšín, L, Wild, J, Šmíd, M, Perez-Martin, P, Pan, X, Kühlman, M, Pintor, J, Cikhardt, J, Dreimann, M, Eckermann, D, Rosenthal, F, Vinko, SM, Forte, A, Gawne, T, Campbell, T, Ren, S, Shi, Y, Hutchinson, T, Humphries, O, Preston, T, Makita, M, Nakatsutsumi, M, Köhler, A, Harmand, M, Toleikis, S, Falk, K, and Juha, L

Abstract

We report on ion emission from plasma produced on thick targets irradiated with nanosecond and femtosecond pulses delivered by mid-ultraviolet and soft x-ray lasers, respectively. To distinguish between different ion acceleration mechanisms, the maximum kinetic energy of ions produced under different interaction conditions is plotted versus laser fluence. The transformation of the time-of-flight detector signal into ion charge density distance-of-flight spectra makes it possible to determine the mean kinetic energy of the fastest ion groups based on the influence of the acoustic velocity of ion expansion. This allows obtaining additional characteristics of the ion production. The final energy of the group of fast ions determined using the ion sound velocity model is an order of magnitude larger in the fs-XFEL interaction than in the ns-UV one. On the contrary, the ablation yield of ions in our experiment is seven orders of magnitude greater when applying ns-UV laser pulses, not only due to higher energies of UV laser pulses, but also due to a significant difference in interaction and ion formation mechanisms.

Published
2023

14. Observation of filaments in mega-ampere dense plasma focus within pure deuterium by means of simultaneous schlieren and interferometry diagnostics

Author

Kubes, P., primary, Paduch, M., additional, Auluck, S., additional, Sadowski, M. J., additional, Cikhardt, J., additional, Klir, D., additional, Kravarik, J., additional, Malir, J., additional, Munzar, V., additional, Novotný, J., additional, Rezac, K., additional, Szymaszek, A., additional, and Tomaszewski, K., additional

Published
2023
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15. Influence of the magnetic field on properties of hot electron emission from ablative plasma produced at laser irradiation of a disc-coil target

Author

Pisarczyk, T, primary, Renner, O, additional, Dudzak, R, additional, Chodukowski, T, additional, Rusiniak, Z, additional, Domanski, J, additional, Badziak, J, additional, Dostal, J, additional, Krupka, M, additional, Singh, S, additional, Klir, D, additional, Ehret, M, additional, Gajdos, P, additional, Zaras-Szydłowska, A, additional, Rosinski, M, additional, Tchórz, P, additional, Szymanski, M, additional, Krasa, J, additional, Burian, T, additional, Pfeifer, M, additional, Cikhardt, J, additional, Jelinek, S, additional, Kocourkova, G, additional, Batani, D, additional, Batani, K, additional, Santos, J, additional, Vlachos, C, additional, Ospina-Bohórquez, V, additional, Volpe, L, additional, Borodziuk, S, additional, Krus, M, additional, and Juha, L, additional

Published
2022
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16. Magnetized plasma implosion in a snail target driven by a moderate-intensity laser pulse

Author

Pisarczyk, T., Gus’kov, S. Yu, Zaras-Szydłowska, A., Dudzak, R., Renner, O., Chodukowski, T., Dostal, J., Rusiniak, Z., Burian, T., Borisenko, N., Rosinski, M., Krupka, M., Parys, P., Klir, D., Cikhardt, J., Rezac, K., Krasa, J., Rhee, Y.-J., Kubes, P., Singh, S., Borodziuk, S., Krus, M., Juha, L., Jungwirth, K., Hrebicek, J., Medrik, T., Golasowski, J., Pfeifer, M., Skala, J., Pisarczyk, P., and Korneev, Ph.

Published
2018
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18. Laser-generated supersonic plasma jets and shocks in a transverse magnetic field

Author

Bohlin, H., (0000-0002-9859-2408) Brack, F.-E., Cervenak, M., Chodukowski, T., Cikhardt, J., Dostál, J., Dudžák, R., Hubner, J., Huo, W., Jelinek, S., Klír, D., (0000-0002-0275-9892) Kroll, F., Krupka, M., Krůs, M., Pisarczyk, T., Rusiniak, Z., (0000-0003-0390-7671) Schramm, U., T.-H, N.-B., Weber, S., Zaraś-Szydłowska, A., (0000-0003-3926-409X) Zeil, K., Kumar, D., Schlegel, T., Tikhonchuk, V., Bohlin, H., (0000-0002-9859-2408) Brack, F.-E., Cervenak, M., Chodukowski, T., Cikhardt, J., Dostál, J., Dudžák, R., Hubner, J., Huo, W., Jelinek, S., Klír, D., (0000-0002-0275-9892) Kroll, F., Krupka, M., Krůs, M., Pisarczyk, T., Rusiniak, Z., (0000-0003-0390-7671) Schramm, U., T.-H, N.-B., Weber, S., Zaraś-Szydłowska, A., (0000-0003-3926-409X) Zeil, K., Kumar, D., Schlegel, T., and Tikhonchuk, V.

Abstract

The influence of a transverse magnetic field on the formation and evolution of supersonic plasma jets and shocks was studied experimentally, and compared with 3D numerical simulations. An improved jet collimation was seen due to the change in the magnetic field topology restricting the radial expansion of the ablated plasma. The magnetic field was also shown to strongly affect the shock structures, both indirectly through the modified jet geometry, as well as due to a compression of the field lines in the shock region. The interaction characteristics were found to depend on the relative contribution of the magnetic and plasma pressure in balancing the ram pressure of the jet.

Published
2022

20. Radiative characterization of supersonic jets and shocks in a laser-plasma experiment

Author

(0000-0001-6637-5460) Bohlin, H., (0000-0002-9859-2408) Brack, F.-E., Cervenak, M., Chodukowski, T., (0000-0002-8222-8038) Cikhardt, J., Dostál, J., Dudžák, R., Hubner, J., Huo, W., (0000-0002-1999-811X) Jelinek, S., (0000-0002-0510-3653) Klír, D., (0000-0002-0275-9892) Kroll, F., Krupka, M., Krůs, M., (0000-0002-1109-7683) Pisarczyk, T., Rusiniak, Z., (0000-0003-0390-7671) Schramm, U., T.-H, N.-B., (0000-0003-3154-9306) Weber, S., Zaraś-Szydłowska, A., (0000-0003-3926-409X) Zeil, K., (0000-0002-7225-0549) Kumar, D., Schlegel, T., (0000-0001-7532-5879) Tikhonchuk, V., (0000-0001-6637-5460) Bohlin, H., (0000-0002-9859-2408) Brack, F.-E., Cervenak, M., Chodukowski, T., (0000-0002-8222-8038) Cikhardt, J., Dostál, J., Dudžák, R., Hubner, J., Huo, W., (0000-0002-1999-811X) Jelinek, S., (0000-0002-0510-3653) Klír, D., (0000-0002-0275-9892) Kroll, F., Krupka, M., Krůs, M., (0000-0002-1109-7683) Pisarczyk, T., Rusiniak, Z., (0000-0003-0390-7671) Schramm, U., T.-H, N.-B., (0000-0003-3154-9306) Weber, S., Zaraś-Szydłowska, A., (0000-0003-3926-409X) Zeil, K., (0000-0002-7225-0549) Kumar, D., Schlegel, T., and (0000-0001-7532-5879) Tikhonchuk, V.

Abstract

The interaction of supersonic laser-generated plasma jets with a secondary gas target was studied experimentally. The plasma parameters of the jet, and the resulting shock, were characterized using a combination of multi-frame interferometry/shadowgraphy, and x-ray diagnostics, allowing for a detailed study of their structure and evolution. The velocity was obtained with an x-ray streak camera, and filtered x-ray pinhole imaging was used to infer the electron temperature of the jet and shock. The topology of the ambient plasma density was found to have a significant effect on the jet and shock formation, as well as on their radiation characteristics. The experimental results were compared with radiation hydrodynamic simulations, thereby providing further insights into the underlying physical processes of the jet and shock formation and evolution.

Published
2021

23. K-shell radiation and neutron emission from z-pinch plasmas generated by hybrid gas-puff implosions onto on-axis wires

Author

Klir, D., primary, Shishlov, A. V., additional, Kokshenev, V. A., additional, Cherdizov, R. K., additional, Cikhardt, J., additional, Fursov, F. I., additional, Kravarik, J., additional, Kubes, P., additional, Kurmaev, N. E., additional, Malir, J., additional, Munzar, V., additional, Novotny, J., additional, Ratakhin, N. A., additional, and Rezac, K., additional

Published
2021
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24. Laser-generated supersonic plasma jets and shocks in a transverse magnetic field.

Author

Bohlin, H, Brack, F-E, Cervenak, M, Chodukowski, T, Cikhardt, J, Dostál, J, Dudžák, R, Hubner, J, Huo, W, Jelinek, S, KlĂ-r, D, Kroll, F, Krupka, M, KrĹŻs, M, Pisarczyk, T, Rusiniak, Z, Schramm, U, Nguyen-Bui, T-H, Weber, S, and ZaraĹ›-SzydĹ‚owska, A

Subjects
PLASMA jets, MAGNETIC fields, PLASMA pressure, LASER plasmas
Abstract

The influence of a transverse magnetic field on the formation and evolution of supersonic plasma jets and shocks was studied experimentally, and compared with 3D numerical simulations. An improved jet collimation was seen due to the change in the magnetic field topology restricting the radial expansion of the ablated plasma. The magnetic field was also shown to strongly affect the shock structures, both indirectly through the modified jet geometry, as well as due to a compression of the field lines in the shock region. The interaction characteristics were found to depend on the relative contribution of the magnetic and plasma pressure in balancing the ram pressure of the jet. [ABSTRACT FROM AUTHOR]

Published
2022
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25. Laser produced electromagnetic pulses: generation, detection and mitigation

Author

Consoli, F., Tikhonchuk, V. T., Bardon, M., Bradford, P., Carrol, D. C., Cikhardt, J., Cipriani, M., Clarke, R. J., Cowan, T. E., Danson, C. N., Angelis, R., Marco, M., Dubois, J.-L., Etchessahar, B., Laso Garcia, A., Hillier, D. I., Weiman, J., Kmetik, V., Krasa, J., Li, Y., Lubrano, F., McKenna, P., Metzkes-Ng, J., Poye, A., Prencipe, I., Raczka, P., Smith, R. A., Vrana, R., Woolsey, N. C., Zemaityte, E., Zhang, Y., Zhang, Z., Zielbauer, B., Neely, D., Honsa, A., Consoli, F., Tikhonchuk, V. T., Bardon, M., Bradford, P., Carrol, D. C., Cikhardt, J., Cipriani, M., Clarke, R. J., Cowan, T. E., Danson, C. N., Angelis, R., Marco, M., Dubois, J.-L., Etchessahar, B., Laso Garcia, A., Hillier, D. I., Weiman, J., Kmetik, V., Krasa, J., Li, Y., Lubrano, F., McKenna, P., Metzkes-Ng, J., Poye, A., Prencipe, I., Raczka, P., Smith, R. A., Vrana, R., Woolsey, N. C., Zemaityte, E., Zhang, Y., Zhang, Z., Zielbauer, B., Neely, D., and Honsa, A.

Abstract

This paper provides an up-to-date review of the problems related to the generation, detection and mitigation of strong electromagnetic pulses created in the interaction of high-power, high-energy laser pulses with different types of solid targets. It includes new experimental data obtained independently at several international laboratories. The mechanisms of electromagnetic field generation are analyzed and considered as a function of the intensity and the spectral range of emissions they produce. The major emphasis is put on the GHz frequency domain, which is the most damaging for electronics and may have important applications. The physics of electromagnetic emissions in other spectral domains, in particular THz and MHz, is also discussed. The theoretical models and numerical simulations are compared with the results of experimental measurements, with special attention to the methodology of measurements and complementary diagnostics. Understanding the underlying physical processes is the basis for developing techniques to mitigate the electromagnetic threat and to harness electromagnetic emissions, which may have promising applications.

Published
2020

26. Radiative characterization of supersonic jets and shocks in a laser-plasma experiment

Author

Bohlin, H, primary, Brack, F-E, additional, Cervenak, M, additional, Chodukowski, T, additional, Cikhardt, J, additional, Dostál, J, additional, Dudžák, R, additional, Hubner, J, additional, Huo, W, additional, Jelinek, S, additional, Klír, D, additional, Kroll, F, additional, Krupka, M, additional, Krůs, M, additional, Pisarczyk, T, additional, Rusiniak, Z, additional, Schramm, U, additional, Nguyen-Bui, T-H, additional, Weber, S, additional, Zaraś-Szydłowska, A, additional, Zeil, K, additional, Kumar, D, additional, Schlegel, T, additional, and Tikhonchuk, V, additional

Published
2021
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27. Effect of Initial Conditions on Charged Particle Acceleration in a Dense Plasma Focus

Author

Jackson, S. L., primary, Engelbrecht, J. T., additional, Beresnyak, A. R., additional, Mamonau, A.A., additional, Petkov, E. E., additional, Richardson, A. S., additional, Allen, R. J., additional, Boyer, C. N., additional, Giuliani, J. L., additional, Schumer, J. W., additional, Klir, D., additional, Rezac, K., additional, Cikhardt, J., additional, Maron, Y., additional, Stambulchik, E., additional, Roark, Christine, additional, Stoltz, Peter H., additional, Spirkin, Anton, additional, and Luginsland, J. W., additional

Published
2020
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28. Hot electron retention in laser plasma created under terawatt subnanosecond irradiation of Cu targets

Author

Pisarczyk, T, primary, Kalal, M, additional, Gus’kov, S Yu, additional, Batani, D, additional, Renner, O, additional, Santos, J, additional, Dudzak, R, additional, Zaras-Szydłowska, A, additional, Chodukowski, T, additional, Rusiniak, Z, additional, Dostal, J, additional, Krasa, J, additional, Krupka, M, additional, Kochetkov, Iu, additional, Singh, S, additional, Cikhardt, J, additional, Burian, T, additional, Krus, M, additional, Pfeifer, M, additional, Cristoforetti, G, additional, Gizzi, L A, additional, Baffigi, F, additional, Antonelli, L, additional, Demchenko, N N, additional, Rosinski, M, additional, Terwińska, D, additional, Borodziuk, S, additional, Kubes, P, additional, Ehret, M, additional, Juha, L, additional, Skala, J, additional, and Korneev, Ph, additional

Published
2020
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29. Laser-Target Experiments at PALS for Deuterium Plasma Beam Fusion

Author

Krása, J., primary, Klír, D., additional, Cikhardt, J., additional, Pfeifer, M., additional, Hora, H., additional, Krupka, M., additional, Řezáč, K., additional, Dudžák, R., additional, Dostál, J., additional, Burian, T., additional, Krůs, M., additional, Skála, J., additional, Jungwirth, K., additional, Rusiniak, Z., additional, Pisarczyk, T., additional, and Chodukowski, T., additional

Published
2020
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30. Production of energetic protons, deuterons, and neutrons up to 60 MeV via disruption of a current-carrying plasma column at 3 MA

Author

Klir, D, primary, Shishlov, A V, additional, Kokshenev, V A, additional, Jackson, S L, additional, Rezac, K, additional, Cherdizov, R K, additional, Cikhardt, J, additional, Dudkin, G N, additional, Fursov, F I, additional, Krasa, J, additional, Kravarik, J, additional, Kubes, P, additional, Kurmaev, N E, additional, Munzar, V, additional, Ratakhin, N A, additional, Turek, K, additional, and Varlachev, V A, additional

Published
2020
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31. Characteristics of closed currents and magnetic fields outside the dense pinch column in a plasma focus discharge

Author

Kubes, P., primary, Paduch, M., additional, Sadowski, M. J., additional, Cikhardtova, B., additional, Cikhardt, J., additional, Klir, D., additional, Kravarik, J., additional, Kwiatkowski, R., additional, Munzar, V., additional, Rezac, K., additional, Szymaszek, A., additional, Tomaszewski, K., additional, Zielinska, E., additional, Zaloga, D., additional, and Akel, M., additional

Published
2020
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32. Neutron production in cavity pressure acceleration of plasma objects

Author

Chodukowski, T., primary, Borodziuk, S., additional, Rusiniak, Z., additional, Cikhardt, J., additional, Jach, K., additional, Krasa, J., additional, Rosinski, M., additional, Terwinska, D., additional, Dudzak, R., additional, Pisarczyk, T., additional, Swierczynski, R., additional, Burian, T., additional, Tchorz, P., additional, Dostal, J., additional, Szymanski, M., additional, Pfeifer, M., additional, Skala, J., additional, Singh, S., additional, Krupka, M., additional, and Krus, M., additional

Published
2020
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33. Neutron fluence distribution in experiments with 3 MA deuterium gas-puff z-pinch

Author

Cikhardt, J., primary, Klir, D., additional, Shishlov, A. V., additional, Kokshenev, V. A., additional, Rezac, K., additional, Cherdizov, R. K., additional, Dudkin, G. N., additional, Fursov, F. I., additional, Kravarik, J., additional, Kubes, P., additional, Kurmaev, N. E., additional, Munzar, V., additional, Novotny, J., additional, Ratakhin, N. A., additional, Turek, K., additional, and Varlachev, V. A., additional

Published
2020
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35. Ion bursts and multi-electron population in expanding laser-produced plasma

Author

Krása, J., primary, Klír, D., additional, Krupka, M., additional, Cikhardt, J., additional, Pfeifer, M., additional, Pisarczyk, T., additional, Dostál, J., additional, Řezáč, K., additional, Dudžák, R., additional, Burian, T., additional, Rusiniak, Z., additional, Chodukowski, T., additional, Krůs, M., additional, and Kálal, M., additional

Published
2020
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36. Ion acceleration and neutron production in hybrid gas-puff z-pinches on the GIT-12 and HAWK generators

Author

Klir, D., primary, Jackson, S. L., additional, Shishlov, A. V., additional, Kokshenev, V. A., additional, Rezac, K., additional, Beresnyak, A. R., additional, Cherdizov, R. K., additional, Cikhardt, J., additional, Cikhardtova, B., additional, Dudkin, G. N., additional, Engelbrecht, J. T., additional, Fursov, F. I., additional, Krasa, J., additional, Kravarik, J., additional, Kubes, P., additional, Kurmaev, N. E., additional, Munzar, V., additional, Ratakhin, N. A., additional, Turek, K., additional, and Varlachev, V. A., additional

Published
2020
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37. Spatial distribution of ion emission in gas-puff z-pinches and dense plasma foci

Author

Klir, D, primary, Shishlov, A V, additional, Jackson, S L, additional, Kokshenev, V A, additional, Kubes, P, additional, Rezac, K, additional, Beresnyak, A R, additional, Cherdizov, R K, additional, Cikhardt, J, additional, Cikhardtova, B, additional, Dudkin, G N, additional, Engelbrecht, J T, additional, Fursov, F I, additional, Kaufman, J, additional, Krasa, J, additional, Kravarik, J, additional, Kurmaev, N E, additional, Munzar, V, additional, Ratakhin, N A, additional, Turek, K, additional, and Varlachev, V A, additional

Published
2020
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39. Comprehensive diagnostics of hot electron emission from plasmas produced by sub-nanosecond terawatt laser on thin foil metal targets

Author

Krupka, M., primary, Krasa, J., additional, Dudzak, R., additional, Cikhardt, J., additional, Kalal, M., additional, Burian, T., additional, Klir, D., additional, Rezac, K., additional, Dostal, J., additional, Pfeifer, M., additional, Pisarczyk, T., additional, Chodukowski, T., additional, and Rusiniak, Z., additional

Published
2019
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40. Elaboration of 3-frame complex interferometry for optimization studies of capacitor-coil optical magnetic field generators

Author

Pisarczyk, T., primary, Santos, J.J., additional, Dudzak, R., additional, Zaras-Szydłowska, A., additional, Ehret, M., additional, Rusiniak, Z., additional, Dostal, J., additional, Chodukowski, T., additional, Renner, O., additional, Gus'kov, S.Yu., additional, Korneev, Ph., additional, Burian, T., additional, Vlachos, Ch., additional, Kochetkov, Iu., additional, Makaruk, D., additional, Rosinski, M., additional, Kalal, M., additional, Krupka, M., additional, Pfeifer, M., additional, Klir, D., additional, Cikhardt, J., additional, Krasa, J., additional, Singh, S., additional, Borodziuk, S., additional, Krus, M., additional, Juha, L., additional, Hrebicek, J., additional, Golasowski, J., additional, and Skala, J., additional

Published
2019
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41. Influence of an external additional magnetic field on the formation of a plasma column in a dense plasma focus

Author

Kubes, P., primary, Paduch, M., additional, Sadowski, M. J., additional, Cikhardt, J., additional, Cikhardtova, B., additional, Klir, D., additional, Kravarik, J., additional, Kwiatkowski, R., additional, Munzar, V., additional, Rezac, K., additional, Skladnik-Sadowska, E., additional, Szymaszek, A., additional, Tomaszewski, K., additional, Zaloga, D., additional, and Zielinska, E., additional

Published
2019
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42. Initial conditions in the hawk dense plasma focus

Author

Engelbrecht, J. T., primary, Jackson, S. L., additional, Mamonau, A. A., additional, Beresnyak, A. R., additional, Rezac, K., additional, Cikhardt, J., additional, Klir, D., additional, Weber, B. V., additional, Giuliani, J. L., additional, and Schumer, J. W., additional

Published
2019
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43. Features of fast deuterons emitted from plasma focus discharges

Author

Kubes, P., primary, Paduch, M., additional, Sadowski, M. J., additional, Cikhardt, J., additional, Cikhardtova, B., additional, Klir, D., additional, Kravarik, J., additional, Kwiatkowski, R., additional, Munzar, V., additional, Rezac, K., additional, Skladnik-Sadowska, E., additional, Szymaszek, A., additional, Tomaszewski, K., additional, Zaloga, D., additional, and Zielinska, E., additional

Published
2019
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44. Effect of expanding plasma on propagation of electromagnetic pulses by laser-plasma interaction.

Author

Krása, J., Consoli, F., Cikhardt, J., Pfeifer, M., De Angelis, R., Krupka, M., Klír, D., Řezáč, K., Dostál, J., Krůs, M., and Dudžák, R.

Subjects
LASER-plasma interactions, ELECTROMAGNETIC pulses, FAST Fourier transforms, PLASMA density, LASER plasmas, INHOMOGENEOUS plasma
Abstract

Experiments were performed using the Prague Asterix Laser System to study the effect of expanding plasma on electromagnetic pulse propagation (EMP) in the interaction chamber in an intensity regime of 1016 W cm-2. Similar to the interaction that occurs between radio waves and the ionosphere, the expansion of laser-produced plasma causes the vacuum chamber to be gradually filled with inhomogeneous plasma that interacts with the emitted EMP. Combining the space-time analysis of a plasma density inside the interaction chamber and the fast Fourier transform filtering of antenna signals, we have resolved the influence of the expanding plasma on space-time characteristics of EMP. [ABSTRACT FROM AUTHOR]

Published
2020
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45. Acceleration of protons and deuterons up to 35 MeV and generation of 1013 neutrons in a megaampere deuterium gas-puff z-pinch

Author

Klir, D, primary, Shishlov, A V, additional, Kokshenev, V A, additional, Kubes, P, additional, Rezac, K, additional, Buryskova, S, additional, Cherdizov, R K, additional, Cikhardt, J, additional, Cikhardtova, B, additional, Dudkin, G N, additional, Engelbrecht, J T, additional, Fursov, F I, additional, Jackson, S L, additional, Krasa, J, additional, Kravarik, J, additional, Kurmaev, N E, additional, Munzar, V, additional, Padalko, V N, additional, Ratakhin, N A, additional, Sila, O, additional, Turek, K, additional, Varlachev, V A, additional, and Wagner, R, additional

Published
2018
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47. Production of relativistic electrons, MeV deuterons and protons by sub-nanosecond terawatt laser

Author

Krása, J., primary, Klír, D., additional, Řezáč, K., additional, Cikhardt, J., additional, Krůs, M., additional, Velyhan, A., additional, Pfeifer, M., additional, Buryšková, S., additional, Dostál, J., additional, Burian, T., additional, Dudžák, R., additional, Turek, K., additional, Pisarczyk, T., additional, Kalinowska, Z., additional, Chodukowski, T., additional, and Kaufman, J., additional

Published
2018
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48. Evolution of the Pinched Column During Hard X-ray and Neutron Emission in a Dense Plasma Focus

Author

Kubes, P., primary, Paduch, M., additional, Sadowski, M. J., additional, Cikhardt, J., additional, Cikhardtova, B., additional, Klir, D., additional, Kravarik, J., additional, Munzar, V., additional, Rezac, K., additional, Zielinska, E., additional, Skladnik-Sadowska, E., additional, Szymaszek, A., additional, Tomaszewski, K., additional, and Zaloga, D., additional

Published
2018
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50. Measurements of Early-Time Plasma Evolution in the Hawk Dense Plasma Focus

Author

Engelbrecht, J. T., primary, Jackson, S.L., additional, Richardson, A. S., additional, Beresnyak, A., additional, Weber, B. V., additional, Giuliani, J. L., additional, Rittersdorf, I. M., additional, Schumer, J. W., additional, Klir, D., additional, Rezac, K., additional, Cikhardt, J., additional, Maron, Y., additional, and Stambulchik, E., additional

Published
2018
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