nichtthermische

Nichtthermische refers to phenomena or processes that do not involve a significant increase or decrease in temperature. In many scientific contexts, this term is used to distinguish from thermal effects, which are directly related to heat transfer and changes in kinetic energy of molecules. For example, non-thermal plasma is a type of plasma where the electrons are at a much higher temperature than the ions and neutral particles, leading to chemical reactions without significantly heating the bulk gas. Similarly, non-thermal processing in food science aims to preserve food quality by using methods like high-pressure processing or pulsed electric fields, which kill microorganisms without relying on heat. In physics, non-thermal radiation refers to electromagnetic radiation not produced by a body's thermal emission, such as synchrotron radiation. The key characteristic of nichtthermische processes is that their primary mechanism of action is not heat.