A-Radiation

A-radiation is a type of radioactive radiation that was discovered at the end of the 19th century. The radiation is part of the spectrum of radioactive particles and comes from alpha particles, which have a positive charge and high energy.

Alpha radiation (α radiation) is one of the types of electromagnetic radiation. It is one of three types of ionizing radiation. The particles that make up the main stream of high-energy charged radiation particles are helium nuclear nuclei with a mass approximately equal to the sum of the masses of the protons in them. Alpha particles are relatively light. An example of atomic alpha decay is the fission of nuclei of radioactive elements by nuclei of plutonium or uranium. They give birth to high-energy α-particles. In one fission event during a nuclear explosion and the decay of nuclear fuel nuclei, 2–3 million alpha particles are released.

The main sources of “pure” α-rays are nuclear fusion, thermonuclear fusion and annihilation. On Earth, the main source is nuclear capture, a reaction involving elements at the beginning of chains of β-radioactive element nuclei. This can happen continuously in the cores of stars if the temperature in them is high enough for the thermonuclear reaction to fuse hydrogen into helium. He nuclei form only a small part of the total mass of stellar matter; everything else is a medium that fills interstellar space, stars and the solar system, and consists almost entirely of hydrogen