Martina Lužová

Seasonal wind turbine-associated lightning in Central Europe

Martin Kákona, Robin Duspara, Zbyněk Sokol, Jana Popová et autres

We report systematic evidence for a statistically distinguishable subset of cold-season lightning episodes in Central Europe that shows a distinct and recurrent association with wind turbines. Using Blitzortung stroke data from 2021 to 2024, ENTLN classifications from 2023, and local electric-field measurements, …

cz (code pays fourni par la source)

An exceptionally strong gamma-ray glow at Lomnický štít observed by an unprecedented number of ionizing radiation sensors

Jakub Šlegl, Martin Kákona, Ronald Langer, Igor Strhárský et autres

The summer season of 2023 brought to Lomnický štít (Slovakia) one of the strongest gamma-ray glows (GrGs) ever recorded. As Lomnický štít is a unique observation point for GrGs, we equipped the observatory with multiple detectors in the frame of the CRREAT …

cz, sk (code pays fourni par la source)

Seasonal Wind Turbine-Associated Lightning in Central Europe

Martin Kákona, Zbyněk Sokol, Robin Duspara, Jana Popová et autres

We report systematic evidence that cold-season lightning in Central Eu- rope frequently occurs in close proximity to wind turbines. Using Blitzor- tung stroke data (2021–2024), ENTLN data (2023), and electric field mea- surements, we identify a recurring phenomenon - Seasonal Wind Turbine- …

Measurements with Angular Sensitive Electric Field Mill in Thunderstorms

Martin Kákona, Jakub Kákona, Roman V. Dvorak, Iva Ambrožová et autres

Abstract Electric Field Mills (EFMs) are critical tools in atmospheric sciences for measuring electric fields within thunderstorms. Traditional EFMs primarily record field magnitudes and often lack the precise temporal resolution and directionality necessary for in-depth storm analysis. Our research introduces THUNDERMILL01, an …

sk, cz (code pays fourni par la source)

Addressing challenges of high-energy atmospheric physics in Europe

Ondřej Ploc, Martin Kákona, Marek Sommer, Jakub Šlegl et autres

Thunderstorm-induced gamma radiation phenomena, including terrestrial gamma-ray flashes (TGFs) and thunderstorm ground enhancements (TGEs), have emerged as key areas in high-energy atmospheric physics due to their potential radiation effects in the atmosphere. The interaction of high-energy photons and relativistic electrons with the …

cz (code pays fourni par la source)

Latitudinal effect on the position of Regener–Pfotzer maximum investigated by balloon flight HEMERA 2019 in Sweden and balloon flights FIK in Czechia

Iva Ambrožová, Martin Kákona, Roman V. Dvorak, Jakub Kákona et autres

When primary space radiation particles enter into the atmosphere of the Earth, they generate showers of secondary radiation. The intensity of secondary radiation reaches its maximum, called the Regener-Pfotzer maximum; its exact position depends on the geomagnetic effective vertical cut-off rigidity, the …

cz (code pays fourni par la source)

Measurements of Ionizing Radiation Generated in Thunderstorms

Lembit Sihver, Ondřej Ploc, K. Turek, Martin Kákona et autres

Measurements and theoretical studies show that thunderclouds can act as particle accelerators in nature. Terrestrial gamma ray flashes (TGFs) are bursts of gamma rays with energies ranging from below 10 keV to above 40 MeV, which last for microseconds to several milliseconds, …

cz, sk (code pays fourni par la source)

MEASUREMENT OF THE REGENER–PFOTZER MAXIMUM USING DIFFERENT TYPES OF IONISING RADIATION DETECTORS AND A NEW TELEMETRY SYSTEM TF-ATMON

Jakub Kákona, Martina Lužová, Martin Kákona, Marek Sommer et autres

Stratospheric balloons are a useful tool for the investigation of cosmic radiation at high altitudes and the tests of new detectors of cosmic radiation. Due to necessary data processing, the balloon gondola needs to carry, together with radiation detectors, additional supplementary sensors …

cz (code pays fourni par la source)

AIRDOS — open-source PIN diode airborne dosimeter

Martin Kákona, Jakub Šlegl, Dagmar Kyselová, Marek Sommer et autres

Abstract This article introduces a new open-source dosimeter AIRDOS intended for measurements on board aircraft. In-flight measurement of a mixed radiation field is a challenging deal that requires a small low-power-consumption battery-operated lightweight device with long endurance. A new innovative electronic design …

cz, jp (code pays fourni par la source)

INVESTIGATION OF NUCLEAR EMULSIONS IN TERMS OF NEUTRON DOSIMETRY

Martina Lužová, Andrey A. Zaitsev, V. Bradnová, Iva Ambrožová et autres

Neutron detection using nuclear emulsions can offer an alternative in personal dosimetry. The production of emulsions and their quality have to be well controlled with respect to their application in dosimetry. Nuclear emulsions consist mainly of gelatin and silver halide. Gelatin contains …

ru, cz (code pays fourni par la source)

Toward ternary fission accompanied by the 8Be nucleus

D. A. Artemenkov, V. Bradnová, Marina V. Gustova, Oleg Ivanov et autres

Experiments in preparation for search for uranium ternary fission by means of nuclear track emulsion are summarized. The study will be focused on the possible involvement of the unstable nucleus 8 Be in the suggested scenario of the collinear tri-partition in the …

ru, cz, ro, ca (code pays fourni par la source)

Comparative measurements of mixed radiation fields using liulin and AIRDOS dosimeters

Martin Kákona, Václav Štěpán, Iva Ambrožová, Todor Petkov Arsov et autres

Cosmic rays represent not only a significant health risk to the crew of spacecraft and aircraft but also a fundamental phenomenon of basic research on the origin and composition of the universe. High-energy atmospheric physics is a newly opened research domain which …

cz, bg (code pays fourni par la source)