Timepix Detector in Space Applications and Radiation Belt Dynamics Observed at Low Altitudes
| Název práce v češtině: | Timepix detektor v kosmických aplikacích a dynamika radiačních pásů pozorovaná na nízkých výškách |
|---|---|
| Název v anglickém jazyce: | Timepix Detector in Space Applications and Radiation Belt Dynamics Observed at Low Altitudes |
| Klíčová slova: | Particle Tracking Detector|Space Radiation Environment|Cross Calibration|Geomagnetic Storm|Interplanetary Shock Arrival |
| Klíčová slova anglicky: | Particle Tracking Detector|Space Radiation Environment|Cross Calibration|Geomagnetic Storm|Interplanetary Shock Arrival |
| Akademický rok vypsání: | 2019/2020 |
| Typ práce: | disertační práce |
| Jazyk práce: | angličtina |
| Ústav: | Katedra fyziky povrchů a plazmatu (32-KFPP) |
| Vedoucí / školitel: | prof. RNDr. František Němec, Ph.D. |
| Řešitel: | skrytý - zadáno a potvrzeno stud. odd. |
| Datum přihlášení: | 02.08.2019 |
| Datum zadání: | 02.08.2019 |
| Datum potvrzení stud. oddělením: | 02.10.2019 |
| Datum a čas obhajoby: | 06.05.2024 10:00 |
| Datum odevzdání elektronické podoby: | 04.03.2024 |
| Datum odevzdání tištěné podoby: | 07.03.2024 |
| Datum proběhlé obhajoby: | 06.05.2024 |
| Oponenti: | Mag. Dr. rer. nat. Ulrich Taubenschuss |
| Dr. Sébastien Bourdarie | |
| Konzultanti: | RNDr. Peter Rubovič, Ph.D. |
| Zásady pro vypracování |
| Fluxes of energetic particles trapped in the Van Allen radiation belts are ultimately controlled by several competing phenomena. Most importantly, they can be energized due to both radial diffusion and wave-particle interactions. These can be, on the other hand, responsible for breaking down the first adiabatic invariant, pitch angle diffusion, and subsequent precipitation. Additionally, during periods of sudden magnetospheric compressions, particles primarily at larger L-shells can be lost due to a magnetopause shadowing. We suppose to use energetic particle data obtained by particle instruments at low altitude spacecraft to systematically analyze radiation belt dynamics and individual phenomena taking place. An example of such instrument is a pixelized detector of the Timepix family developed within the Medipix collaboration installed on satellites by an IEAP CTU team. A special attention should be paid to energetic particle flux variations at the times of interplanetary shock arrivals and substorms, and to related variations of the global magnetic field configuration and simultaneously observed wave phenomena. Furthermore, the possibility to develop a dedicated detector for such phenomena should be investigated. |
| Seznam odborné literatury |
| [1] M. G. Kivelson, C. T. Russell: Introduction to Space Physics. University Press, Cambridge 1995.
[2] F. F. Chen: Introduction to Plasma Physics and Controlled Fusion. Springer, New York, 1984, ISBN 0-306-41332-9. [3] A. D. M. Walker: Plasma Wawes in the Magnetosphere. Springer Verlag, Berlin, Heidelberg 1993, ISBN 3-540-56046-7. [4] Further literature will be agreed with the supervisor. |