Search results
Aug 10, 2016 · They are produced by the hottest and most energetic objects in the universe, such as neutron stars and pulsars, supernova explosions, and regions around black holes. On Earth, gamma waves are generated by nuclear explosions, lightning, and the less dramatic activity of radioactive decay.
- Visible Light - NASA Science
X-Rays. Gamma Rays. Earth's Radiation Budget. Resources. EMS...
- How Gamma-rays are Generated - Imagine the Universe!
There are several physical processes that generate cosmic...
- Visible Light - NASA Science
Nov 3, 2024 · Gamma rays are produced during the disintegration of radioactive atomic nuclei and the decay of certain subatomic particles. Gamma rays are also produced through the process of pair annihilation, in which an electron and its antiparticle, a positron, vanish and two photons are created.
- A gamma ray is electromagnetic radiation of the shortest wavelength and highest energy. Gamma-ray radiation has wavelengths generally smaller than...
- The term gamma ray was coined by British physicist Ernest Rutherford in 1903, following early studies of the emissions of radioactive nuclei.
- Medical applications of gamma rays include the imaging technique of positron emission tomography (PET) and radiation therapies to treat cancerous t...
Dec 28, 2022 · On Earth, gamma rays are produced by radioactive decay, nuclear weapons and lightning, while in space they are produced by violent, high-energy sources such as solar flares, quasars,...
Nov 18, 2014 · There are several physical processes that generate cosmic gamma rays: A high-energy particle can collide with another particle. A particle can collide and annihilate with its anti-particle. An element can undergo radioactive decay. A charged particle can be accelerated.
Natural sources of gamma rays on Earth include gamma decay from naturally occurring radioisotopes such as potassium-40, and also as a secondary radiation from various atmospheric interactions with cosmic ray particles.
Gamma rays are produced during the disintegration of radioactive atomic nuclei and the decay of certain subatomic particles. Gamma rays are also produced through the process of pair annihilation, in which an electron and its antiparticle, a positron, vanish and two photons are created.
Nov 29, 2018 · Gamma rays are produced primarily by four different nuclear reactions: fusion, fission, alpha decay and gamma decay. Nuclear fusion is the reaction that powers the sun and stars.
