验证了从两步γ级联强度中提取的能级密度函数和辐射强度函数
Possibilities to verify the level density and radiative strength functions, extracted from the two-step gamma-cascade intensities
摘要：
对于大部分稳定的长寿命放射性靶核，直接确定其激发γ跃迁的激发能级密度和辐射强度函数是不可能的。这种情况是唯一确定的事实，即水平间距远小于现有的伽玛射线和带电粒子的光谱仪的分辨率。在这种情况下，核的这些参数的提取可以通过它们仅拟合到最可能的值来执行，再现在核反应谱和截面中测量的。这个逆问题的数学分析其性质主要是模棱两可的。此外，通常在关于核反应机制和因素的一些假设的框架内分配方程组，这些方程组连接可激发能级的数目和带电粒子发射的概率，确定所研究过程的动力学。这些参数的验证可以部分地通过计算其不同集合的总伽马谱来执行。特别是，这种分析的结果表明，计算的激发能级的辐射强度函数的能量依赖性的形式的变化的结构最有可能必须考虑到中子结合能。不可能排除这样的可能性，即辐射和中子强度函数也取决于中子共振的结构和较高的激发能。
英文摘要：
The direct determination of the excitation level density and radiative strength functions of their exciting gamma-transitions is impossible for the larger part of the stable and long-life radioactive target nuclei. This circumstance is uniquely determined by the fact, that the level spacing much less than the resolution of the existing spectrometers of gamma-rays and charged particles. The extraction of these parameters of nucleus in this situation can be executed by their only fitting to the most probable values, reproducing the measured in the nuclear reactions spectra and sections. This inverse problem of mathematical analysis of its nature is principally ambiguous. Moreover, system of equations, those connecting the number of excitable levels and probability of the emission of charge particles are assigned usually within the framework of some assumptions about the mechanism of nuclear reaction and factors, determining the dynamics of the studied process. The verification of these parameters can be partially executed by the calculation of total gamma-spectra for their different sets. As, in particular, the results of this analysis show, the calculation of the structure of the excited levels to a change in the form of the energy dependence of radiative strength functions most likely must be considered to the neutron-binding energy. It is not possible to exclude the possibility of that, that also radiative, and neutron strength functions depend on the structure of neutron resonance and for the higher excitation energies.
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