| 释义 |
isotopic spin
isotopic spinn. An isospin.isotopic spin n (General Physics) See isospin i′sotop′ic spin′
n. a quantum number that is related to the number of different values of electric charge that a given kind of baryon or meson may have. Symbol: I Also called isospin. [1935–40] Isotopic Spin
isotopic spin[¦ī·sə¦täp·ik ′spin] (nuclear physics) A quantum-mechanical variable, resembling the angular momentum vector in algebraic structure whose third component distinguished between members of groups of elementary particles, such as the nucleons, which apparently behave in the same way with respect to strong nuclear forces, but have different charges. Also known as isobaric spin; isospin; i-spin. Isotopic Spin one of the characteristics of strongly interacting particles that determines (together with other characteristics—mass, spin, and baryon charge) whether or not the particle belongs to a group of particles with similar properties (but with different electric charges) that participate identically in strong interactions. (See ISOTOPIC INVARIANCE.) |