annihilation radiation


Also found in: Medical, Wikipedia.

annihilation radiation

[ə‚nī·ə′lā·shən ‚rād·ē′ā·shən]
(particle physics)
Electromagnetic radiation arising from the collision, and resulting annihilation, of an electron and a positron, or of any particle and its antiparticle.
Mentioned in ?
References in periodicals archive ?
Jean et al., "INTEGRAL SPI limits on electron-positron annihilation radiation from the galactic plane," The Astrophysical Journal, vol.
Dark atoms and the positron-annihilation-line excess in the galactic bulge
The motion of the electron-positron pair causes a Doppler shift on the energy of the annihilation radiation. As a consequence, the line-shape gives the distribution of the longitudinal momentum component of the annihilating pair.
Effect of alpha-particle energies on CR-39 line-shape parameters using positron annihilation technique
Whatever the "fountain" may be, its recent discovery "is the first breakthrough" toward understanding the annihilation radiation from our galaxy, according to David Smith of the Space Sciences Laboratory at the University of California, Berkeley.
Those mysterious cosmic gamma rays

Encyclopedia browser ?
Full browser ?