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Let’s assume the gamma rays come from Co-60, which is an isotope used relatively commonly in medicine. The mean energy of emitted gammas from Co-60 is 1.25 MeV. If we assume that all the energy is deposited at, say, the lens (relatively radiosensitive), that gives us. 1.25 MeV / gamma * 1.602E-13 J / MeV * 3.00E8 gammas = 6.008E-5 J.
Hace 1 día · Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation.A material containing unstable nuclei is considered radioactive.Three of the most common types of decay are alpha, beta, and gamma decay.The weak force is the mechanism that is responsible for beta ...
Hace 3 días · The DAMPE spacecraft hosts four instruments for the detection of high-energy gamma rays, electrons and other cosmic particles to continue filling in gaps in high-energy astrophysics by deploying the deepest detector to date, enabling the mission to measure the highest energies in the particle universe in the ongoing quest for an ...
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Hace 3 días · Favourite. Share. Add to playlist. Report. 2 minutes ago. NASA’s Fermi Gamma-ray Space Telescope "detected none of the high-energy gamma-ray light" from a nearby supernova. NASA explains. Credit: NASA Goddard Space Flight Center.
NASA | Fermi Proves Supernova Remnants Produce Cosmic Rays A study using observations from NASA's Fermi Gamma-ray Space Telescope reveals the first clear-cut evidence that the expanding debris of exploded stars produces some of the fastest-moving matter in the universe.
Hace 5 días · Gamma Ray Bursts (GRBs) bridge relativistic astrophysics and multi–messenger astronomy. Space–based γ/X–ray wide field detectors have proven essential to detect and localize the highly variable GRB prompt emission, which is also a counterpart of gravitational wave events.
