核言碎语(219)——β粒子

162 β粒子

Beta Particle

(https://www.nuclear-power.com/)

β粒子

Beta particles are high-energy, high-speed electrons or positrons emitted by certain fission fragments or certain primordial radioactive nuclei such as potassium-40. The beta particles are a form of ionizing radiation, also known as beta rays. The production of beta particles is termed beta decay. There are two forms of beta decay, electron decay (β− decay) and positron decay (β+ decay). A nuclear reactor occurs especially the β− decay because the common feature of the fission products is an excess of neutrons (see Nuclear Stability). An unstable fission fragment with the excess of neutrons undergoes β− decay, where the neutron is converted into a proton, an electron, and an electron antineutrino.

β粒子是由某些裂变碎片或某些原始放射性核(如钾-40)发出的高能高速电子或正电子。β粒子是一种电离辐射,也被称为贝塔射线。β粒子的产生称为β衰变。衰变有两种形式,电子衰变(β -衰变)和正电子衰变(β+衰变)。核反应堆尤其会发生β -衰变,因为裂变产物的共同特征是中子过多(参见核稳定性)。一个不稳定的裂变碎片与过剩的中子经历β -衰变,其中中子转换为一个质子,一个电子,和一个电子*中反**微子。

核言碎语(219)——β粒子

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(以下内容来自百度百科)

核言碎语(219)——β粒子

β粒子(英语:Beta particle),又译贝塔粒子或贝他粒子。指的是当 放射性物质 发生β衰变,所释出的高能量电子或正电子。β衰变有两种:β−衰变与β+ 衰变。β−衰变会产生电子,而β+ 衰变会产生正电子。

(待续)