Search for dissertations about: "Energetic particles"
Showing result 1 - 5 of 60 swedish dissertations containing the words Energetic particles.
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1. Instrumentation for energetic Neutral atom measurements at Mars, Venus and The Earth
Abstract : This thesis deals with the development and calibrations of sensors to measure energetic neutral atoms (ENAs) at Mars, Venus, and the Earth. ENAs are formed in charge exchange processes between energetic, singly--charged ions and a cold neutral gas. READ MORE
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2. Cosmogenic radionuclides in environmental archives – A paleo-perspective on space climate and a synchronizing tool for climate records
Abstract : The Sun is the primary source for Earth’s climate system. Its fluctuations in irradiance are also known to have an impact on climate. In addition, changes in solar activity modulate the atmospheric production rates of cosmogenic radionuclides (e.g. READ MORE
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3. Extreme solar particle storms and links to solar activity inferred from cosmogenic radionuclides in ice cores
Abstract : During solar storms, large amounts of solar energetic particles (SEP) are accelerated into the interplanetary medium and sometimes hit Earth. These events, known as SEP events, can have harmful impacts on our modern society by affecting spacecrafts and potentially astronauts in space. READ MORE
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4. Nonlinear dynamics of frequency sweeping energetic particle modes in tokamaks
Abstract : In a burning plasma, such as the next generation tokamak experiment ITER, significant numbers of highly energetic particles will be produced via nuclear reactions. The presence of energetic particles, be it fusion born alpha particles or ions accelerated by auxiliary heating schemes, may excite kinetic instabilities and thereby affect the heating and transport of all particles in the plasma. READ MORE
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5. The dynamics of Alfvén eigenmodes excited by energetic ions in toroidal plasmas
Abstract : Experiments for the development of fusion power that are based on magnetic confinement deal with plasmas that inevitably contain energetic (non-thermal) particles. These particles come e.g. from fusion reactions or from external heating of the plasma. READ MORE