^(96)Y衰变能谱的精确计算

Advanced Calculation of ^(96)Y Decay Energy Spectra

精确计算衰变能谱对探索不稳定原子核结构、获取中微子能谱及验证衰变理论等均有重要科学价值与意义。衰变能谱的精确计算依赖于衰变分支比和单条能级衰变能谱,前者通常利用γ-γ符合测量或全吸收谱仪对β衰变产物进行直接测量而获得,后者通常由费米衰变理论计算获得。本文以^(96)Y衰变为例,对^(96)Y衰变的实验衰变分支比数据进行评价,然后结合费米衰变理论进行理论分析,为提高能谱的精度,对能谱加入了形状因子修正,最终获得了高精度的^(96)Y衰变能谱。

The decay of atomic nuclei,a process characterized by the transformation of nuclei through the emission of particles or the capture of electrons,is a phenomenon of immense scientific significance.Its exploration and accurate analysis hold the key to unraveling the intricate structure of unstable nuclei,gaining insights into neutrino energy spectra,and validating the underlying principles of decay theories.One of the scientific pursuit of decay lies in the meticulous calculation of the decay spectrum.The decay spectrum serves as a fundamental aspect in the understanding of nuclear decay process.Its comprehensive consideration is pivotal for advancing our knowledge across various domains,from probing the depths of unstable nuclei to extracting valuable information regarding neutrino energy spectra.Moreover,it plays a crucial role in the validation and refinement of existing decay theories,contributing to the continuous evolution of our understanding of nuclear physics.The indispensable part in computing the decay energy spectrum is intricately tied to the consideration of the decay branching ratio.This parameter,crucial for understanding the relative probabilities of different decay pathways,is typically obtained through sophisticated measurement techniques.Commonly,researchers employ theγ-γcoincidence method or directly measure with total absorption spectrometer method to obtain data onβdecay products.These methods provide essential information that serves as the foundation for unraveling the complexities inherent in the decay process.Simultaneously,the calculation of the decay spectrum at the transition of a single energy level is based on the Fermi decay theory.Rooted in quantum mechanics,this theory offers a comprehensive framework for calculating the transition probabilities associated with nuclear decay.It enhances the accuracy of predicting the decay spectrum,enabling to develop a nuanced understanding of the underlying physics governing these processes.In the context of this paper,the empirical focus was on the decay of ^(96)Y,serving as a representative example.The experimental decay branching ratio data for ^(96)Y decay meticulously evaluated and from TAGS were discussed.To further refine the computed decay spectrum,shape factor correction was introduced.The addition of shape factor correction represented an adjustment,aimed at improving the alignment between theoretical predictions and experimental observations.This correction mechanism ensures that the computed energy spectrum not only adheres closely to the experiment data but also reflects the intricacies of the underlying decay processes.Beyond its specific implications for the decay of ^(96)Y,the necessity of fostering a deeper understanding of atomic decay processes and taking forbidden transitions into consideration was stressed.