A radiation zone, or radiative region is a layer of a star's interior where energy is primarily transported toward the exterior by means of radiative diffusion and thermal conduction, rather than by convection.[1] Energy travels through the radiation zone in the form of electromagnetic radiation as photons.
Matter in a radiation zone is so dense that photons can travel only a short distance before they are absorbed or scattered by another particle, gradually shifting to longer wavelength as they do so. For this reason, it takes an average of 171,000 years for gamma rays from the core of the Sun to leave the radiation zone. Over this range, the temperature of the plasma drops from 15 million K near the core down to 1.5 million K at the base of the convection zone.[2]
^Cite error: The named reference ryan_norton2010 was invoked but never defined (see the help page).
^Cite error: The named reference elkins_tanton2006 was invoked but never defined (see the help page).
A radiationzone, or radiative region is a layer of a star's interior where energy is primarily transported toward the exterior by means of radiative diffusion...
the lack of human activity in the Exclusion Zone and is despite the radiation. The Chernobyl Exclusion Zone was the site of fighting between Russian and...
Van Allen radiation belt is a zone of energetic charged particles, most of which originate from the solar wind, that are captured by and held around a...
transported by convection in such a region. In a radiationzone, energy is transported by radiation and conduction. Stellar convection consists of mass...
The history of radiation protection begins at the turn of the 19th and 20th centuries with the realization that ionizing radiation from natural and artificial...
particle radiation consists of particles of non-zero rest energy, such as alpha radiation (α), beta radiation (β), proton radiation and neutron radiation acoustic...
electrons in the solar radiative zone (the zone within 75% of the solar radius, where heat transfer is by radiation) sets the photon diffusion time scale...
Radiation therapy or radiotherapy (RT, RTx, or XRT) is a treatment using ionizing radiation, generally provided as part of cancer therapy to either kill...
particles (mostly protons and electrons) to form showers of ionizing radiation that precede the CME. When a CME impacts the Earth's magnetosphere, it...
Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light. On Earth, sunlight...
region of the volume of a star, lying above the stellar core, radiationzone and convection zone. The stellar atmosphere is divided into several regions of...
within the star will exactly match the incoming flux from below. The radiationzone is the region of the stellar interior where the flux of energy outward...
radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies. It is by far the most important source...
zone, but horses left on an island in the Pripyat River 6 km (4 mi) from the power plant died when their thyroid glands were destroyed by radiation doses...
dense sphere of electron-degenerate matter that cools slowly by thermal radiation, eventually becoming a black dwarf. If black dwarfs were to exist, they...
the medium. Also known as the radiation-zone, the far field carries a relatively uniform wave pattern. The radiationzone is important because far fields...
A nuclear and radiation accident is defined by the International Atomic Energy Agency (IAEA) as "an event that has led to significant consequences to...
today. The Red Forest is located in the zone of alienation; this area received the highest doses of radiation from the Chernobyl disaster and the resulting...
transparent to ultraviolet radiation. Thus, massive stars have a radiative envelope. The lowest mass main sequence stars have no radiationzone; the dominant energy...
The structure of the Sun, a G-type star: Core Radiationzone Convection zone Photosphere Chromosphere Corona Sunspot Granules Prominence Not labelled:...
for transporting this energy are radiation and convection. A radiationzone, where energy is transported by radiation, is stable against convection and...
difficult to observe. Of particular interest to astrobiology is the habitable zone of planetary systems where planets could have surface liquid water, and thus...
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