First-of-its-kind experimental evidence contradicts traditional theories about the emission and absorption of radiation by plasmas. While solids, liquids, and gases are familiar states of matter, there is a fourth state called plasmas which is the most common form of matter in the universe. It can
A NASA image of plasma bursting from the sun. Plasma—a hot soup of atoms with free-moving electrons and ions—is the most abundant form of matter in the universe, found throughout our solar system in the sun and other planetary bodies. A new study from University of Rochester researchers provides experimental data about how radiation travels through dense plasmas, which will help scientists to better understand planetary science and fusion energy.
While solids, liquids, and gases are familiar states of matter, there is a fourth state called plasmas which is the most common form of matter in the universe. It can be found in the sun and other celestial bodies in our solar system. However, dense, which is a hot mixture of atoms with free-moving electrons and ions, only occurs under extremely high pressure and temperature conditions, making it challenging for scientists to fully understand this state of matter.
One important question in the field of HEDP is how plasmas emit or absorb radiation. Current models depicting radiation transport in dense plasmas are heavily based on theory rather than experimental evidence.Laboratory for Laser Energetics used LLE’s OMEGA laser to study how radiation travels through dense plasma.
When the plasma is bombarded with x-rays, the electrons in the atoms “jump” from one energy level to another by either emitting or absorbing photons of light. A detector measures these changes, revealing the physical processes that are occurring inside the plasma, similar to taking an x-ray diagnostic of a broken bone.
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