الاشعة الكونية - الاشعة فوق البنفسجية .. الفيزياء

Cosmic Rays - Ultraviolet Rays .. Physics

Cosmic Rays

Very high-energy rays called cosmic rays reach the Earth from outer space, and they consist mainly of positively charged particles (alpha particles) and heavy nuclei such as iron nuclei, for example. After entering the Earth's atmosphere, high-energy protons collide with atoms such as nitrogen and oxygen atoms, resulting in other elementary particles that are characterized by their instability. One of them is called a meson, and it has many types, all of which decay to produce gamma rays in addition to electrons, positrons, and neutrons. A positron is a particle that has the same mass as an electron, but it is loaded with a positive charge.

Hydrogen isotopes (left). It is believed that nuclei exchange unstable mesons (in the middle), which are used to bind together the particles in the nucleus of an atom.
(To the right) Table of elementary particles.

(Table of elementary particles)