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In particle physics and nuclear physics, the branching fraction (or branching ratio) for a decay is the fraction of particles which decay by an individual decay mode or with respect to the total number of particles which decay. It applies to either the radioactive decay of atoms or the decay of elementary particles. [1]
原子核物理学. 原子核物理学 （げんしかくぶつりがく、 英語 ：nuclear physics）とは、 強い相互作用 に従う 粒子 の 多体問題 を研究する学問領域。. 主に 原子核 の 核構造 、核反応（ 核分裂反応 、 核融合反応 ）などを扱う分野のこと。. また、 核物質 ...
In condensed matter physics, scintillation ( / ˈsɪntɪleɪʃən / SIN-til-ay-shun) is the physical process where a material, called a scintillator, emits ultraviolet or visible light under excitation from high energy photons ( X-rays or gamma rays) or energetic particles (such as electrons, alpha particles, neutrons, or ions ).
The Physics Portal. Physics is the natural science of matter, involving the study of matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. Physics is one of the most fundamental scientific disciplines, with its main goal being to understand how the universe behaves.
The nuclear magnetic moment is the magnetic moment of an atomic nucleus and arises from the spin of the protons and neutrons. It is mainly a magnetic dipole moment; the quadrupole moment does cause some small shifts in the hyperfine structure as well. All nuclei that have nonzero spin also possess a nonzero magnetic moment and vice versa ...
The Nobel Prize in Physics has been awarded to 224 individuals as of 2023. [5] The first prize in physics was awarded in 1901 to Wilhelm Conrad Röntgen, of Germany, who received 150,782 SEK. John Bardeen is the only laureate to win the prize twice—in 1956 and 1972. William Lawrence Bragg was the youngest Nobel laureate in physics; he won the ...
