دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

radioactive decay process where the loss of an alpha particle from the nucleus lowers the atomic number by two and the atomic mass by four.

n: one of the extremely small particles of an atom that is ejected from a radioactive substance (such as radium or uranium) as it disintegrates. Alpha particles have a positive charge.

n: the property possessed by some substances (such as radium, uranium and thorium) of releasing alpha particles, beta particles, or gamma particles as the substance spontaneously disintegrates.