beta decay

noun

1. * β衰变（指原子分裂并释放出一个电子）
   the breaking up of an atom in which an electron is given off

1. Trapped neutrons are detected when they beta decay; energetic decay electrons ionize helium atoms in the superfluid resulting in efficient conversion of electron kinetic energy into light ( scintillation).
   被捕捉的中子在贝它衰变时可被侦测到，因为在超流体中带有能量的衰变电子可游离氦原子导致电子动能有效地转换成光子（闪烁）。
2. Half-lives are characteristic properties of the various unstable atomic nuclei and the particular way in which they decay. Alpha decay and Beta decay are generally slower processes than gamma decay.
   半衰期是各种不稳定原子核的特性，是它们衰变的特殊方式。α衰变和β衰变一般比γ衰变为慢。
3. Let us very briefly rehearse one or two facts about nuclear beta decay.
   让我们非常简要地复述一下有关该β衰变的一两件事实。
4. The shape of the electron spectrum in beta decay is not dominated by properties of the matrix element.
   β衰变的电子谱的形状不取决于矩阵元的性质。
5. The radioactive transformation giving rise to these electrons was known as beta decay.
   产生这种电子的放射性变化，称为β衰变。
6. Couched in mathematical language within the framework of the quantum theory, it gave a satisfying explanation of beta decay.
   如按量子理论的观点表达为数学语言，就可对β衰变作出满意的解释。
7. Radioactive series: Any of four sets of unstable heavy atomic nuclei that undergo a series of alpha decay and Beta decay until a stable nucleus is achieved.
   放射性系：四组不稳定的重原子核，通过一系列α衰变和β衰变直至达到稳定的核为止。
8. He is most noted for his work on beta decay, the development of the first nuclear reactor, and for the development of quantum theory.
   他的最主要的成就在于贝它衰变理论，建立了第一座原子反应堆以及量子论。
9. The study of an electrostatic spherical grid retarding spectrometer for the study of neutrino rest mass by measuring beta spectrum from tritium decay
   用于测量中微子静止质量的静电减速谱仪的研究
10. Objective To study the gross alpha and beta radioactivity and decay pattern of topaz colored by neutron radiation.
    目的探讨中子辐照改色黄玉的总放射性水平及其变化规律。
11. The influence of strong magnetic field on beta decay in the crusts of neutron stars
    中子星壳层中强磁场与β衰变
12. Beta Decay in~ ( 176) Yb
    ~（176）Yb的β衰变
13. Improvement on accuracy of activity for nuclides with beta decay ──ⅱ. the elimination of the type B uncertainty
    β衰变核素活度绝对测定准确度的改善&Ⅱ.B类不确定度的消除
14. A method is described for measuring the beta spectrum from tritium decay in order to determine the electron-antineutrino rest mass.
    本文提出一种从氚衰变β谱确定电子反中微子静止质量的新型结构β谱仪。
15. Present and Future of Double Beta Decay
    双β-衰变研究现状及展望
16. Progress in nuclear double beta decay
    原子核双β衰变的进展
17. Our working hypothesis predicted a correlation of the variation of beta-decay rate to the flux of neutrinos.
    我们的研究假设，β衰变速率的变化与中微子流的数量之间呈相关关系。
18. Double beta decay in nuclei plays an important role in testing lepton number conservation and neutrino mass.
    原子核双β衰变在检验轻子数守恒律和中微子质量等问题上都起了重要的作用。

noun

1. radioactive decay of an atomic nucleus that is accompanied by the emission of a beta particle