Annihilation radiation Annihilation radiation Annihilation radiation is a term used in Gamma spectroscopy for the gamma radiation produced when a particle and its antiparticle collide and annihilate. Most commonly, this refers to 511-keV gamma rays produced by a normal (negative) electron colliding with a positron. Annihilation radiation is not monoenergetic, unlike gamma rays produced by radioactive decay. The production mechanism of annihilation radiation introduces Doppler broadening. The annihilation peak produced in a gamma spectrum by annihilation radiation therefore has a higher full width at half maximum (FWHM) than other gamma rays in spectrum. The difference is more apparent with high resolution detectors,
The Xi Effect that his theory about the so-called Xi Effect may explain their observations. The Effect postulates a vastly higher order of space-time called Xi-space, which has altered, causing slowly increasing effects on the local universe. These effects will cause galaxies to collapse and shrink rather than recede as they normally do. Eventually, the theory is proven as it becomes fact, and the shrinkage become measurable. Electromagnetic radiation is progressively eliminated and even colours begin to disappear. Darkness falls upon the Earth and there is total panic. The story bears some resemblance to Isaac Asimov's short story Nightfall. The Xi Effect The